Awesome Psychology Tasks / measurement map

Catalog

269 paradigms across 23 domains

Each paradigm carries its description, key references, and every implementation the pipeline has indexed and launch-checked. A specification badge means a machine-checkable definition of the paradigm exists — and tells you whether a human has reviewed it.

Attention 31

Attention Network Test (ANT)

Combines Flanker with cue conditions to independently measure alerting, orienting, and executive attention networks.

10 implementations

Attentional Blink

Detect two targets in a rapid serial visual presentation (RSVP) stream. The second target is often missed at 200–500 ms lag.

8 implementations

Cancellation Task

Participants scan a dense, static array and mark (cross out / tap) every instance of one or more target items embedded among distractors, working through the whole field under a time limit. Unlike classic visual search — which asks for a present/absent decision per display and reads efficiency off the set-size slope — cancellation requires exhaustive marking of all targets, so it indexes selective and sustained attention, visual scanning, and processing speed rather than search-decision time. A staple of clinical neuropsychology (e.g. the Bourdon–Zazzo “deux barrages”, d2, Bells, and Star Cancellation tests; “barrage” is the French term for the paradigm) and of developmental reading-attention assessment. A variant of visual search, but distinct in what it measures.

0 implementations

Change Blindness

Detect a change between two alternating scenes separated by a brief disruption (flicker, saccade, mudsplash, or gradual fade). Reveals that focal attention is required to register even large visual changes.

1 implementation

Choice Reaction Time

Press one of several keys depending on which stimulus appears. RT scales with number of alternatives (Hick's law); measures speed of stimulus-response selection.

10 implementations

Colavita Visual Dominance Task

Detect unimodal visual, unimodal auditory, or bimodal audio-visual stimuli. Observers reliably miss the auditory component on bimodal trials — visual dominance over audition in attention.

2 implementations

Dichotic Listening

Different messages to each ear; shadow one. Measures selective auditory attention.

2 implementations

Dual-Task Paradigm

Perform two tasks simultaneously. Performance costs reveal capacity limits and attentional resource allocation.

1 implementation

Eriksen Flanker Task

Respond to a central target flanked by congruent or incongruent distractors. Measures focused attention and response conflict.

24 implementationssourced — unreviewed

Exogenous vs. Endogenous Cueing

Compare peripheral flash (reflexive) vs. central arrow (voluntary) cues to separate reflexive from voluntary orienting.

1 implementation

Global/Local (Navon) Task

Identify the global or local level of hierarchical stimuli (large letter made of small letters).

6 implementations

Gradual Continuous Performance Task (gradCPT)

A continuous performance task variant in which stimuli fade smoothly from one to the next (gradient cross-fades, no abrupt onsets), so target-onset times are implicit. Participants respond to frequent go-targets and withhold for rare no-go targets; the continuous fading makes withholding effortful and exposes lapses of sustained attention via commission errors, reaction-time variability, and vigilance-decrement slopes. Introduced by Esterman et al. (2013) as a sensitive probe of sustained attention.

0 implementations

Inattentional Blindness

Failure to notice an unexpected stimulus during an attention-demanding primary task.

1 implementation

Multiple Object Tracking (MOT)

Track a subset of moving objects among identical distractors. Measures attentional capacity across space and time.

2 implementations

Negative Priming

Respond to a target that was a distractor on the preceding trial. Slowed RTs reflect lingering inhibition of previously ignored stimuli.

2 implementations

Oddball Paradigm

Frequent standard stimuli are interspersed with rare deviant (oddball) stimuli. Generates the Mismatch Negativity (MMN) and P300 ERP components; standard tool in EEG attention and change-detection research.

1 implementation

Paced Auditory Serial Addition Test (PASAT)

Digits are presented auditorily at a fixed pace; participant adds each digit to the immediately preceding one and reports the running sum. Indexes sustained attention, working memory, and processing speed; clinical staple in MS and TBI.

1 implementation

Posner Cueing Task

Spatial cue (valid/invalid) precedes a target. Measures covert attentional orienting and disengagement.

9 implementations

Psychomotor Vigilance Task (PVT)

Respond as fast as possible to a brief visual stimulus appearing at long, unpredictable inter-stimulus intervals (~2–10 s in 10-minute sessions). Lapses (RT > 500 ms) and reciprocal mean RT index sustained vigilance. Foundational tool in sleep-deprivation and shift-work research; test–retest reliability ICC ≈ 0.8–0.9 sets it apart from generic simple-RT tasks.

1 implementation

RSVP Single-Target Detection

Detect a single target in a rapid stream of items (~10/sec). Measures temporal attention resolution.

0 implementations

Self-Prioritization Task

Participants first learn arbitrary associations between neutral geometric shapes and labels referring to the self, a close other, and a stranger, then judge whether subsequently presented shape–label pairs match the learned mapping. Faster and more accurate responses for self-associated pairs index the rapid attentional prioritization of self-relevant stimuli.

0 implementations

Simple Reaction Time

Press a single key as quickly as possible whenever any stimulus appears. Measures basic detection + motor speed; baseline for more complex RT paradigms.

19 implementations

Stroop Task

Name the ink color of color-words (e.g., "RED" in blue ink). Measures selective attention and inhibitory control.

24 implementationssourced — unreviewed

Useful Field of View (UFOV)

Identify a central target while localizing a peripheral target. Measures spatial extent of attentional processing.

0 implementations

Value-Modulated Attentional Capture (VMAC)

During training, participants learn that certain colour singletons predict high vs. low monetary reward; in a subsequent test, these now task-irrelevant colours appear as distractors in a visual search display where reward is no longer at stake. Slower responses and increased eye-movements to high-value distractors index how learned value captures attention independently of goals and physical salience.

0 implementations

Visual Search

Search for a target among distractors. Set-size effects reveal parallel (pop-out) vs. serial search.

17 implementations

Memory 34

Brown-Peterson Task

Memorise consonant trigrams, perform a distractor task (e.g., count backwards by threes) for a variable delay (3–18 s), then recall. Demonstrates rapid forgetting of short-term memory under proactive interference — a foundational finding for the STM/LTM distinction.

0 implementations

Change Detection (Visual WM)

Judge whether an item changed in a briefly viewed array after a delay. Estimates visual WM capacity (Cowan's K).

5 implementations

Complex Span (working memory)

Family of working-memory span tasks that interleave a processing requirement (math, reading, symmetry judgment) with serial-storage probes. Together they estimate working-memory capacity as a latent factor that loads on fluid intelligence and resists single-task contamination. Members in the current catalog: operation-span, reading-span; would gain symmetry-span if that proposal is approved.

0 implementations

Corsi Block-Tapping

Reproduce a sequence of block taps. Measures visuospatial working memory span.

20 implementations

Cross-modal Sequence Learning

Participants learn ordered sequences whose items span multiple modalities (e.g. images + spoken or written words paired with auditory cues) and are later probed on order memory and item-cue associations. Distinct from unimodal serial-recall: the cross-modal mixing forces multimodal binding rather than within-modality rehearsal, making the paradigm useful for studying how the brain integrates representations across sensory streams.

0 implementations

Directed Forgetting

Some items cued "forget," others "remember." Comparing memory for each reveals intentional memory control.

12 implementations

Event Segmentation

Participants watch a continuous activity (typically a film of everyday actions) and press a key to mark perceived boundaries between meaningful events, often at coarse and fine grains. Agreement across observers, neural responses at boundaries, and the relationship between segmentation and subsequent memory index how ongoing experience is parsed into event units.

0 implementations

Free Recall

Study a list, then recall items in any order. Serial position effects reveal storage/retrieval dynamics.

0 implementations

Hebb Repetition Learning

Recall lists of items where one list is covertly repeated across trials. Recall improves for the repeated list relative to filler lists, indexing the long-term encoding of sequential information from short-term rehearsal.

1 implementation

N-back

Indicate whether the current stimulus matches the one N items back. Working memory updating; difficulty scales with N.

19 implementationssourced — unreviewed

Novel Word Learning

Participants are exposed to unfamiliar word forms (often paired with referents, pictures, or definitions) and are later tested on recognition, recall, or lexical integration of those items, typically after a delay including sleep. Accuracy and interference effects with existing lexical neighbours index the formation and consolidation of new lexical representations.

7 implementations

Operation Span (OSPAN)

Alternate between math problems and remembering items. Measures WM capacity under dual-task load.

3 implementations

Paired Associates Learning

Learn arbitrary pairs (e.g., word–word); tested via cued recall. Measures associative memory binding.

2 implementations

Part-Set Cuing

Providing some list items as cues paradoxically impairs recall of remaining items. Demonstrates retrieval competition.

0 implementations

Prospective Memory

Remember to perform a future action while engaged in an ongoing task.

1 implementation

Reading Span

Read sentences while remembering final words. Measures WM capacity in a language context.

1 implementation

Recent Probes Task

Item-recognition task in which some negative probes were members of the immediately preceding trial's memory set, inducing proactive interference. Isolates interference resolution in working memory.

1 implementation

Recognition Memory

Distinguish old from new items after study. Analyzed with signal detection theory (d', criterion).

2 implementations

Reference Frame Proclivity Test (RFPT)

Solve egocentric versus allocentric heading judgments to measure an individual's preferred spatial reference frame. Distinguishes participants who encode spatial layouts relative to their own viewpoint from those who use environment-anchored frames.

1 implementation

Retrieval Practice / Testing Effect

After an initial study phase, participants restudy some items and attempt to recall others, then take a delayed final test on all material. Better retention for tested items than for restudied items demonstrates the testing effect and is used to quantify how active retrieval strengthens long-term memory.

0 implementations

Retrieval-Induced Forgetting (RIF)

Practicing retrieval of some category members impairs recall of related unpracticed items. Reveals inhibitory retrieval processes.

0 implementations

Serial Recall

Recall items in exact presentation order. Reveals phonological similarity and word-length effects.

0 implementations

Source Memory

Recall contextual details about how/where information was learned. Measures episodic source monitoring.

0 implementations

Sternberg Task

Judge whether a probe was in a previously shown memory set. RT increases linearly with set size.

4 implementations

Symmetry Span

Visuospatial complex-span task. Interleave symmetry judgments on geometric patterns with location-memory probes; the processing load constrains storage. Together with operation-span and reading-span forms the canonical 'Engle' complex-span trio used to estimate WM capacity as a latent factor.

1 implementation

Think/No-Think Paradigm

After learning word pairs, suppress retrieval of some targets when cued. Tests voluntary memory suppression.

0 implementations

Executive Function 25

Antisaccade

Look away from a peripheral stimulus. Measures inhibitory control of eye movements.

6 implementations

AX-CPT

Respond to A-then-X sequences; measures proactive vs. reactive cognitive control.

4 implementations

Choice Reaction Time

Press one of several keys depending on which stimulus appears. RT scales with number of alternatives (Hick's law); measures speed of stimulus-response selection.

10 implementations

Color-Word Interference (D-KEFS)

Extended Stroop with four conditions including inhibition/switching. Part of the Delis-Kaplan Executive Function System.

0 implementations

Go/No-Go

Respond to frequent "go" stimuli, withhold to "no-go." Measures response inhibition.

11 implementationssourced — unreviewed

Hayling Sentence Completion

Complete sentences with a congruent word (Part A), then an incongruent word (Part B). Part B = suppression.

0 implementations

Letter-Number Sequencing

Reorder intermixed letters and numbers (numbers ascending, letters alphabetical). Measures WM manipulation.

0 implementations

Matrix Reasoning (Raven's Progressive Matrices)

Participants view a matrix (typically 3x3) of abstract patterns with one cell missing, and select the option from a set of alternatives that completes the matrix according to the implicit rule. Accuracy is used as an index of non-verbal analytic reasoning and fluid intelligence.

5 implementations

Maze Solving

Navigate from start to goal through a 2-D maze. Path length, completion time, and dead-end counts index spatial planning and look-ahead. Distinct from Tower-style puzzles (which manipulate sub-goal ordering) and pursuit-tracking tasks (which manipulate continuous visuomotor control).

0 implementations

Pattern Comparison Processing Speed

Judge whether two side-by-side visual patterns are same or different as quickly as possible. NIH Toolbox processing speed measure.

7 implementations

Random Generation Task

Generate sequences (digits, letters, key-presses) intended to be random in time with a pacing signal (often 1 Hz or 2 Hz). Deviations from randomness — counting strings, alphabet/numeric runs, repetition avoidance, response biases — index inhibitory control over prepotent sequences and are a classic executive-function probe.

1 implementation

Recent Probes Task

Item-recognition task in which some negative probes were members of the immediately preceding trial's memory set, inducing proactive interference. Isolates interference resolution in working memory.

1 implementation

Simon Task

Respond based on a non-spatial feature while stimulus location is congruent/incongruent with the response.

15 implementationssourced — unreviewed

Spatial Planning

Family of tasks requiring a participant to mentally search a problem space and produce a move sequence (or route) that achieves a goal under spatial constraints. Distinct from continuous visuomotor control (pursuit, tracking) and from rule-switching paradigms. Members in the current catalog: tower-of-london-hanoi, stockings-of-cambridge; would gain maze-solving and traveling-salesman-problem if those proposals are approved.

0 implementations

Stockings of Cambridge (SOC)

Plan a sequence of moves to match a goal arrangement of colored balls (computerized Tower of London).

0 implementations

Stop-Signal Task

Cancel an initiated response when a stop signal appears. SSRT estimates inhibitory control speed.

8 implementationssourced — unreviewed

Task Switching

Alternate between tasks; switch cost measures mental set reconfiguration.

9 implementationssourced — unreviewed

Tower of London / Hanoi

Rearrange disks to match a goal in minimum moves. Measures planning and problem-solving.

6 implementations

Trail Making Test (TMT)

Part A: connect numbers. Part B: alternate numbers and letters. B–A indexes cognitive flexibility.

6 implementations

Traveling Salesman Problem (TSP)

Visit each of N points exactly once and return to start, minimising total path length. Performance reflects spatial planning and route-optimisation heuristics; humans typically solve small instances (N ≤ 20) near-optimally despite the NP-hard formulation. Distinct from Tower-style puzzles in lacking sub-goal structure.

0 implementations

Decision Making 23

Cognitive Reflection Test (CRT)

Short item set (typically 3-7 questions) where the intuitive answer is wrong and reflection is required to reach the correct one (e.g. "A bat and ball cost $1.10…"). Scores reflective vs. heuristic thinking.

1 implementation

Decisions from Experience

Participants sample from payoff distributions before choosing, rather than seeing described probabilities. Reveals the description–experience gap.

3 implementations

Delay Discounting

Choose between smaller-sooner and larger-later rewards. Discounting steepness measures impulsivity.

7 implementations

Dictator Game

One player allocates money to a passive other. Purer measure of altruism/prosocial preferences.

2 implementations

Footbridge Dilemma

Decide whether to push a person to stop a trolley killing five. "Personal" moral dilemma engaging stronger emotional processing.

0 implementations

Iowa Gambling Task (IGT)

Choose from four decks with varying reward/punishment. Measures affective decision-making under ambiguity.

7 implementations

Monetary Incentive Delay (MID) Task

Cue signals potential monetary gain or loss; participant must respond fast enough to a target to win/avoid the outcome. Dissociates reward anticipation from receipt; widely used in fMRI reward research.

1 implementation

Outcome Devaluation

After learning an action–outcome association, the outcome is devalued. Sensitivity distinguishes goal-directed from habitual behavior.

0 implementations

Patch Foraging (Explore–Exploit)

Participants harvest depleting reward patches (e.g., trees yielding apples at a diminishing rate) and choose on each step whether to keep exploiting the current patch or pay a travel cost to move on. Patch-leaving times, compared against the marginal value theorem's optimal threshold, index explore–exploit balance and sensitivity to opportunity cost.

0 implementations

Prisoner's Dilemma

Cooperate or defect; iterated versions measure cooperation strategies.

0 implementations

Public Goods Game

Contribute to a shared pool (multiplied, redistributed). Measures cooperation and free-riding.

1 implementation

Risk-Sensitive Learning Task

Reinforcement-learning variant where one option delivers a fixed payoff and the other a variance-matched gamble with the same expected value. Probes how learning history shapes risk preferences and asymmetric value updating.

4 implementations

Spatial Exploration Bandit

Participants choose locations on a 2D grid to discover hidden rewards, aiming to maximise cumulative score across a fixed number of rounds. Combines elements of multi-armed bandits (each cell is an arm with an unknown reward) and spatial exploration (the spatial layout encourages structured rather than random search). Distinct from patch-foraging (no patch depletion) and the classical two-armed bandit (large action space + spatial structure).

0 implementations

Trolley Dilemma

Decide whether to divert a trolley to kill one person to save five. Classic moral dilemma indexing utilitarian reasoning.

0 implementations

Trust Game

Investor sends money (multiplied) to trustee who decides return. Measures trust and reciprocity.

1 implementation

Two-Step Task (Markov Decision Task)

Two-stage choice with probabilistic state transitions and drifting reward probabilities. Dissociates model-based from model-free reinforcement learning via stay/switch patterns after rare vs. common transitions.

2 implementations

Ultimatum Game

Proposer splits money; responder accepts or rejects. Measures fairness norms and punishment.

2 implementations

Perception 31

Apparent Motion

Two spatially separated stimuli in alternation produce the illusion of movement. Probes motion correspondence mechanisms.

4 implementations

Backward Masking

A briefly presented target is immediately followed by a mask, rendering it invisible. Measures temporal limits of conscious perception.

2 implementations

Binocular Rivalry

Different images to each eye; perception alternates. Probes perceptual competition and conscious awareness.

1 implementation

Change Blindness

Detect a change between two alternating scenes separated by a brief disruption (flicker, saccade, mudsplash, or gradual fade). Reveals that focal attention is required to register even large visual changes.

1 implementation

Change Detection (Visual WM)

Judge whether an item changed in a briefly viewed array after a delay. Estimates visual WM capacity (Cowan's K).

5 implementations

Colavita Visual Dominance Task

Detect unimodal visual, unimodal auditory, or bimodal audio-visual stimuli. Observers reliably miss the auditory component on bimodal trials — visual dominance over audition in attention.

2 implementations

Composite Face Task

The top half of one face is aligned with the bottom half of another, creating a fused 'composite' that is processed holistically when upright. Participants judge whether the top (or bottom) halves of two composites are the same, with misalignment and inversion as manipulations that break holistic processing. Canonical paradigm for measuring configural / holistic face perception.

2 implementations

Continuous Flash Suppression (CFS)

High-contrast dynamic patterns to one eye suppress a static target in the other from awareness. Measures unconscious visual processing.

0 implementations

Contour Integration

Detect aligned Gabor elements forming a path among random elements. Measures contour grouping.

1 implementation

Crowding

Identify a peripheral target flanked by nearby distractors. Impaired identification probes spatial limits of object recognition.

0 implementations

Ebbinghaus Illusion

Judge the relative size of a central circle surrounded by either larger or smaller flanking circles. The central circle appears smaller when flanked by larger circles, larger when flanked by smaller ones. Reveals contextual size-contrast effects in visual perception.

2 implementations

Embedded Figures Test

Locate a simple shape within a complex pattern. Measures field independence.

0 implementations

Event Segmentation

Participants watch a continuous activity (typically a film of everyday actions) and press a key to mark perceived boundaries between meaningful events, often at coarse and fine grains. Agreement across observers, neural responses at boundaries, and the relationship between segmentation and subsequent memory index how ongoing experience is parsed into event units.

0 implementations

Fast Periodic Visual Stimulation (FPVS)

Stimuli are presented at a fixed base frequency (typically 6 Hz) with a different stimulus type — an "oddball" — appearing periodically (e.g. every 5th image, giving 1.2 Hz). EEG responses at the oddball frequency (and its harmonics, excluding base-frequency multiples) provide an objective, implicit index of how readily the brain discriminates the oddball category from the base. The 6 Hz response indexes general visual processing. Widely used for face individuation, object categorisation, and semantic categorisation without requiring explicit behavioural responses.

0 implementations

Gabor Patch Detection

Detect presence/orientation of Gabor patches at varying contrasts. Measures visual sensitivity.

0 implementations

Glasgow Face Matching Test (GFMT)

Unfamiliar-face matching: decide whether two simultaneously presented face photographs (typically taken with different cameras) depict the same identity. Distinct from face memory tasks — taps perceptual face matching without memory load.

1 implementation

McGurk Effect

Mismatched audio (e.g. /ba/) and visual (e.g. /ga/) syllables fuse into a third percept (e.g. /da/). Indexes audiovisual integration in speech perception.

1 implementation

Mental Rotation

Judge whether two rotated 3D objects are same or mirror images. RT scales with angular disparity.

7 implementations

Muller-Lyer Illusion

Judge line lengths with inward/outward arrowheads. Measures susceptibility to geometric illusions.

1 implementation

Oddball Paradigm

Frequent standard stimuli are interspersed with rare deviant (oddball) stimuli. Generates the Mismatch Negativity (MMN) and P300 ERP components; standard tool in EEG attention and change-detection research.

1 implementation

Psychophysical Staircase

Stimulus intensity adjusted trial-by-trial to converge on perceptual threshold.

7 implementations

Random Dot Motion (RDK)

Judge global motion direction with varying coherence levels. Measures motion perception and perceptual decision-making.

2 implementations

Reference Frame Proclivity Test (RFPT)

Solve egocentric versus allocentric heading judgments to measure an individual's preferred spatial reference frame. Distinguishes participants who encode spatial layouts relative to their own viewpoint from those who use environment-anchored frames.

1 implementation

Simultaneity Judgment (SJ)

Judge whether two stimuli appeared at the same time or at different times. Measures temporal binding window.

0 implementations

Sound–Shape Correspondence (Bouba–Kiki)

Match novel non-words (e.g. "bouba" vs "kiki") to rounded or angular shapes. Reveals systematic crossmodal mappings between speech sounds and visual form, robust across cultures and ages.

2 implementations

Speech-in-Noise

Participants listen to spoken targets (words, digits, or sentences) presented over background noise (e.g., speech-shaped noise, multi-talker babble) at varying signal-to-noise ratios and repeat or identify the target. The signal-to-noise ratio yielding a criterion level of accuracy provides a sensitive index of speech reception threshold and listening effort under adverse conditions.

0 implementations

Vernier Acuity

Judge the offset of two line segments. Measures hyperacuity — spatial resolution finer than photoreceptor spacing.

0 implementations

Language 43

Accent Perception

Listeners hear speech in different regional, social, or non-native accents and rate or categorize the speakers along social-evaluative dimensions (e.g. friendliness, intelligence, geographic origin) or make perceptual judgements (intelligibility, dialect identification). Developmental version (Kinzler line) tracks the emergence of accent-based social preferences in children.

1 implementation

Auditory Naming

Participant hears a short verbal definition or description (e.g. 'a small animal that says meow') and produces the corresponding word. Complementary to picture (visual) naming for assessing word retrieval and language localization; preferentially probes anterior temporal-lobe language processing in cortical-stimulation studies.

0 implementations

Categorical Perception

Participants categorise stimuli that vary along an acoustic continuum (most commonly speech sounds) into discrete perceptual categories. The hallmark is sharper discrimination across category boundaries than within. Heavily used in studies of phoneme perception, especially non-native speech learning (e.g. /r/–/l/ for Japanese listeners, dental vs retroflex for English listeners).

0 implementations

Cookie Theft Picture Description

Examiner shows the Boston Diagnostic Aphasia Examination (BDAE) Cookie Theft picture (a kitchen scene with an overflowing sink and two children stealing cookies) and asks the participant to describe everything they see. Standard connected-speech elicitation task used to assess narrative production, lexical retrieval, and information content in aphasia, dementia, and progressive language disorders.

0 implementations

Cross-Modal Priming

Auditory sentence + visual word probe at critical points. RT to probe reveals real-time lexical activation during speech.

1 implementation

Discourse Particle Pragmatics

Measure comprehension of discourse and modal particles (German doch / ja, English even) by manipulating context and recording acceptability, RT, or visual-world looks. Probes how speakers integrate context-sensitive meaning beyond truth-conditional content.

0 implementations

Garden Path Sentences

Sentences with temporary syntactic ambiguity lead to initial misparse and recovery. Reading time increase measures reanalysis.

0 implementations

Grammaticality Judgment

Participant reads or hears sentences and judges whether each is grammatically acceptable. Sentence sets manipulate specific syntactic structures (filler-gap dependencies, agreement, binding, word order) to probe metalinguistic knowledge. Widely used in aphasia, L2 acquisition, and child-language research.

0 implementations

Head-Turn Preference Procedure (HPP)

Infant is seated between two side lights and audio speakers. A flashing light attracts the infant's gaze toward a speaker; a sustained auditory stimulus then plays from that side and continues until the infant looks away. Looking time toward each side serves as an index of relative interest in the two auditory stimulus types. Standard methodology for testing infant speech perception, word segmentation, and phonotactic learning.

0 implementations

Language Aptitude

Battery-style tasks estimating a learner’s capacity to acquire a new language. Participants are taught the vocabulary and grammar of an artificial or unfamiliar language in a short session, then tested via translation, rule application, or production. Standard instrument: Carroll & Sapon’s Modern Language Aptitude Test (MLAT).

0 implementations

Lexical Decision

Classify letter strings as real words or nonwords. Reveals lexical access speed and word frequency effects.

9 implementations

Looking-While-Listening

Infant or child views two pictures on a screen while hearing a spoken sentence labelling one of them; eye movements to the target picture are tracked over time. Developmental adaptation of the visual world paradigm, used to measure speed and accuracy of spoken-word recognition in young children. Standard in infant psycholinguistics; underpins the Peekbank repository of looking-while-listening datasets.

5 implementations

Masked Priming

A very briefly presented, masked prime word facilitates recognition of a related target. Reveals automatic lexical processing.

1 implementation

Maze Task

Reveal a sentence word-by-word; at each word the participant chooses between the correct continuation and a contextually-implausible distractor. Selection RT is a more localised index of incremental parsing difficulty than self-paced reading. Variants include G-Maze (grammatical distractors) and A-Maze / iMaze (distractors generated by a language model).

0 implementations

McGurk Effect

Mismatched audio (e.g. /ba/) and visual (e.g. /ga/) syllables fuse into a third percept (e.g. /da/). Indexes audiovisual integration in speech perception.

1 implementation

Narrative Comprehension (Naturalistic Listening)

Participant listens to or reads an extended naturalistic narrative (spoken story, podcast, audio-book passage, or film soundtrack) while neural activity is recorded with fMRI, EEG, MEG, or fNIRS. Used to study how the brain integrates linguistic information across long time-scales; analysis typically relies on inter-subject correlation (ISC) or model-based encoding of linguistic features. Underpins large open datasets such as the Narratives collection and the Pieman corpus on OpenNeuro.

0 implementations

Nonword Repetition

Repeat novel nonsense words of increasing length. Measures phonological short-term memory.

0 implementations

Novel Word Learning

Participants are exposed to unfamiliar word forms (often paired with referents, pictures, or definitions) and are later tested on recognition, recall, or lexical integration of those items, typically after a delay including sleep. Accuracy and interference effects with existing lexical neighbours index the formation and consolidation of new lexical representations.

7 implementations

Oral Reading Recognition

Read aloud single words of increasing difficulty. NIH Toolbox reading decoding measure.

1 implementation

Orthographic Decision

Participant judges whether a written letter string conforms to the orthographic conventions of a language (typically: correctly spelled vs misspelt). Distinct from Lexical Decision (real vs non-word): orthographic decision probes orthographic processing and spelling knowledge specifically. Common in developmental reading assessment.

0 implementations

Phoneme Monitoring

Detect a target phoneme in speech. Measures speech segmentation.

0 implementations

Phonological Awareness

Family of tasks that probe a participant’s awareness of and ability to manipulate the sound structure of language at the syllable, onset-rime, and phoneme level. Includes rhyme judgment, phoneme deletion, syllable counting, and segmentation. A foundational predictor of reading acquisition in school-age children.

0 implementations

Picture Naming

Name depicted objects as quickly as possible. Sensitive to lexical retrieval and word frequency.

0 implementations

Picture Vocabulary Test

Select from four pictures the one matching a spoken word. NIH Toolbox receptive vocabulary measure.

1 implementation

Picture–Written Word Matching

Participant sees a picture and selects the matching written word (or short sentence) from a small set of alternatives. Inverse of Written Word–Picture Matching; probes word-reading and orthographic mapping. A reading-modality variant of the Picture Vocabulary Test (PPVT).

0 implementations

Presupposition Projection

Probe how presuppositions triggered by definite descriptions, factive verbs, or aspectual operators behave under entailment-cancelling embeddings (negation, modals, conditionals, questions). Measures inferential commitment via acceptability or reading-time disruption — the canonical example is The king of France is bald under negation.

0 implementations

Pronoun Resolution (Binding Principles)

Participant hears a sentence containing a pronoun or reflexive (e.g. 'Mama Bear is washing her' vs 'Mama Bear is washing herself') and judges its truth against a picture. Tests knowledge of the syntactic binding principles (Principle A for reflexives, Principle B for pronouns) and their pragmatic counterparts. Canonical developmental probe of the Delay of Principle B Effect.

0 implementations

Reading Comprehension

Participant silently reads a short text and answers questions about its content. Standard educational and clinical assessment of reading comprehension, distinct from naturalistic-listening narrative comprehension paradigms.

0 implementations

Reference Game

Two-participant signaling task: a sender describes a target referent (often a colour patch or shape) so a receiver can identify it from a set of distractors. Reveals informativity calculations, lexical alignment across turns, and reference-frame coordination. Distinct from the Director Task, which is single-participant perspective-taking.

0 implementations

Scalar Implicature

Probe pragmatic enrichment of scalar terms (some, or, might) to their upper-bounded interpretation (some-but-not-all, exclusive or, possible-but-not-certain). Typically measured via acceptability judgements, truth-value judgements, or selection RTs on under-informative sentences.

3 implementations

Self-Paced Reading

Press a key to reveal each word; reading times at critical regions reveal parsing strategies.

5 implementations

Semantic Priming

A related prime speeds target recognition. Measures spreading activation in semantic memory.

2 implementations

Sentence Completion (Cloze)

Complete a sentence with the most likely word. Cloze probability used in ERP research (N400).

0 implementations

Sentence Verification

Judge true/false (e.g., "A canary is a bird"). Indexes category typicality.

1 implementation

Single-Word Reading

Participant silently reads single written words (or sentences presented word-by-word, RSVP-style) while behavioural or neural responses are recorded. Distinct from word-naming (which involves articulation) and lexical-decision (which involves an explicit word/non-word judgement). The backbone paradigm for ERP and MEG studies of orthographic, lexical, and semantic access.

0 implementations

Sound–Shape Correspondence (Bouba–Kiki)

Match novel non-words (e.g. "bouba" vs "kiki") to rounded or angular shapes. Reveals systematic crossmodal mappings between speech sounds and visual form, robust across cultures and ages.

2 implementations

Speech-in-Noise

Participants listen to spoken targets (words, digits, or sentences) presented over background noise (e.g., speech-shaped noise, multi-talker babble) at varying signal-to-noise ratios and repeat or identify the target. The signal-to-noise ratio yielding a criterion level of accuracy provides a sensitive index of speech reception threshold and listening effort under adverse conditions.

0 implementations

Spoken Word–Written Form Matching

Participant hears a word (or pronounceable non-word) and selects the matching written form from a small set of alternatives. Tests phoneme-to-grapheme mapping and orthographic word recognition in a cross-modal variant of the Lexical Decision Task. Non-word trials probe systematic decoding rather than lexical lookup.

0 implementations

Syntactic Priming

Exposure to a syntactic structure (e.g., passive) increases production of that structure in subsequent sentences.

0 implementations

Visual World Paradigm

Eye movements to objects during spoken language reveal real-time word recognition.

0 implementations

Word Naming (Pronunciation)

Read aloud presented words. Naming latency reflects phonological encoding and regularity effects.

1 implementation

Word Superiority Effect

Letters identified more accurately when embedded in words than in nonwords or alone. Demonstrates top-down influence.

1 implementation

Written Word–Picture Matching

Participant reads a written word (or short sentence) and selects the matching picture from a small set of alternatives. A reading-modality variant of the Picture Vocabulary Test (PPVT): probes receptive vocabulary and reading comprehension at the word level. Used in early-reading assessment for school-age children.

0 implementations

Social Cognition 21

Accent Perception

Listeners hear speech in different regional, social, or non-native accents and rate or categorize the speakers along social-evaluative dimensions (e.g. friendliness, intelligence, geographic origin) or make perceptual judgements (intelligibility, dialect identification). Developmental version (Kinzler line) tracks the emergence of accent-based social preferences in children.

1 implementation

Asch Conformity Paradigm

Judge line lengths after confederates give unanimously wrong answers. Measures conformity to social pressure.

1 implementation

Cyberball

Virtual ball-tossing game where the participant is gradually excluded. Measures social exclusion effects.

2 implementations

Director Task

Take into account another person's visual perspective when selecting objects. Measures perspective-taking.

0 implementations

Distributive Justice / Resource Allocation

Participant decides how to distribute resources (stickers, coins, snacks) among recipients who differ on dimensions such as need, merit, group membership, or prior generosity. Used to study the development of cooperation, fairness, in-group bias, and reciprocity from preschool age onward.

2 implementations

Empathy for Pain Paradigm

Observe another person receiving a painful stimulus while neural/physiological responses are measured.

0 implementations

Face Inversion Effect

Recognize upright vs. inverted faces. Disproportionate inversion cost demonstrates configural face processing.

0 implementations

Faux Pas Recognition

Identify social faux pas in stories. Measures advanced theory of mind.

0 implementations

Gaze Cueing

A central face looks left/right before a target. Measures automatic social attention following.

1 implementation

Heider-Simmel Animation

Describe movements of geometric shapes. Reveals spontaneous social/intentional attribution.

0 implementations

Milgram Obedience Paradigm

Administer apparent electric shocks under authority instruction. Measures obedience to authority figures.

0 implementations

Minimal Group Paradigm

Categorize participants into arbitrary groups; measure in-group favoritism in resource allocation.

0 implementations

Reference Game

Two-participant signaling task: a sender describes a target referent (often a colour patch or shape) so a receiver can identify it from a set of distractors. Reveals informativity calculations, lexical alignment across turns, and reference-frame coordination. Distinct from the Director Task, which is single-participant perspective-taking.

0 implementations

Selective Trust

Two informants label or describe novel objects: one is consistently accurate or knowledgeable, the other inaccurate or ignorant. Children are then asked which informant to learn from, ask, or endorse. Measures the developmental emergence of epistemic vigilance and trust calibration to informant reliability.

1 implementation

Self-Prioritization Task

Participants first learn arbitrary associations between neutral geometric shapes and labels referring to the self, a close other, and a stranger, then judge whether subsequently presented shape–label pairs match the learned mapping. Faster and more accurate responses for self-associated pairs index the rapid attentional prioritization of self-relevant stimuli.

0 implementations

Stereotype Threat

Participants from a negatively stereotyped group complete a diagnostic task (e.g., a difficult cognitive test) after a manipulation that makes the stereotype salient (such as reporting group identity or being told the task is diagnostic of ability). Performance decrements relative to a non-threat control condition index how stereotype salience disrupts task execution.

0 implementations

Strange Situation

Caregiver–infant separations and reunions in a structured lab setting. Classifies attachment styles.

0 implementations

Learning 26

Contextual Cueing

Repeated spatial configurations speed visual search without explicit awareness.

0 implementations

Cross-modal Sequence Learning

Participants learn ordered sequences whose items span multiple modalities (e.g. images + spoken or written words paired with auditory cues) and are later probed on order memory and item-cue associations. Distinct from unimodal serial-recall: the cross-modal mixing forces multimodal binding rather than within-modality rehearsal, making the paradigm useful for studying how the brain integrates representations across sensory streams.

0 implementations

Hebb Repetition Learning

Recall lists of items where one list is covertly repeated across trials. Recall improves for the repeated list relative to filler lists, indexing the long-term encoding of sequential information from short-term rehearsal.

1 implementation

Instrumental (Operant) Conditioning

Participants learn that actions produce specific outcomes. Schedule manipulations measure goal-directed vs. habitual learning.

0 implementations

Language Aptitude

Battery-style tasks estimating a learner’s capacity to acquire a new language. Participants are taught the vocabulary and grammar of an artificial or unfamiliar language in a short session, then tested via translation, rule application, or production. Standard instrument: Carroll & Sapon’s Modern Language Aptitude Test (MLAT).

0 implementations

Latent Inhibition

Pre-exposure to a stimulus without consequences retards subsequent conditioning to that stimulus. Measures learned irrelevance.

0 implementations

Matrix Reasoning (Raven's Progressive Matrices)

Participants view a matrix (typically 3x3) of abstract patterns with one cell missing, and select the option from a set of alternatives that completes the matrix according to the implicit rule. Accuracy is used as an index of non-verbal analytic reasoning and fluid intelligence.

5 implementations

Novel Word Learning

Participants are exposed to unfamiliar word forms (often paired with referents, pictures, or definitions) and are later tested on recognition, recall, or lexical integration of those items, typically after a delay including sleep. Accuracy and interference effects with existing lexical neighbours index the formation and consolidation of new lexical representations.

7 implementations

Pursuit Rotor Task

Participants attempt to keep a hand-held stylus (or a cursor under mouse/finger control) in continuous contact with a small target that moves along a circular path on a rotating turntable. Time-on-target across trials and sessions indexes visuomotor tracking ability and procedural motor skill learning.

0 implementations

Retrieval Practice / Testing Effect

After an initial study phase, participants restudy some items and attempt to recall others, then take a delayed final test on all material. Better retention for tested items than for restudied items demonstrates the testing effect and is used to quantify how active retrieval strengthens long-term memory.

0 implementations

Reversal Learning

After learning a stimulus–reward association, contingencies reverse. Measures flexibility in reward learning.

3 implementations

Risk-Sensitive Learning Task

Reinforcement-learning variant where one option delivers a fixed payoff and the other a variance-matched gamble with the same expected value. Probes how learning history shapes risk preferences and asymmetric value updating.

4 implementations

Sensory Preconditioning

Two neutral stimuli are paired; one is then conditioned. Testing the other reveals indirect associative transfer.

0 implementations

Serial Reaction Time (SRT)

Respond to stimuli in a repeating spatial sequence. RT speedup indexes implicit sequence learning.

2 implementations

Sign-Tracking vs. Goal-Tracking

After Pavlovian conditioning, some subjects approach the predictive cue (sign) while others approach the reward location (goal).

0 implementations

Statistical Learning

Exposure to streams with embedded regularities. Sensitivity to transitional probabilities measures implicit learning.

0 implementations

Trace Conditioning

CS offset precedes US onset by a temporal gap. Requires hippocampal-dependent bridging of the CS–US gap.

0 implementations

Two-Step Task (Markov Decision Task)

Two-stage choice with probabilistic state transitions and drifting reward probabilities. Dissociates model-based from model-free reinforcement learning via stay/switch patterns after rare vs. common transitions.

2 implementations

Value-Modulated Attentional Capture (VMAC)

During training, participants learn that certain colour singletons predict high vs. low monetary reward; in a subsequent test, these now task-irrelevant colours appear as distractors in a visual search display where reward is no longer at stake. Slower responses and increased eye-movements to high-value distractors index how learned value captures attention independently of goals and physical salience.

0 implementations

Visuomotor Rotation Adaptation

Cursor feedback is rotated relative to hand movement; participants gradually adapt. Measures sensorimotor error-based learning.

0 implementations

Weather Prediction Task

Predict outcomes from probabilistic cue combinations. Dissociates declarative from procedural learning.

1 implementation

Emotion 16

Affective Go/No-Go

Respond to one emotional category, withhold to another. Measures emotion–inhibition interaction.

1 implementation

Affective Priming

Emotional prime facilitates/inhibits evaluation of a subsequent target. Measures automatic affective processing.

0 implementations

Approach-Avoidance Task (AAT)

Push/pull a joystick in response to emotional stimuli. Congruence effects reveal automatic approach/avoidance tendencies.

2 implementations

Dot Probe (Attentional Bias)

Probe replaces one of two stimuli (emotional/neutral). Faster detection at emotional location = attentional bias.

2 implementations

Emotion Regulation Task

Reappraise, suppress, or attend to emotional images. Indexes regulation strategy effectiveness.

1 implementation

Emotional Faces Dot Probe

Dot-probe variant using emotional faces. Widely used in anxiety and depression research for attentional bias to threat.

1 implementation

Emotional Flanker

Emotional distractors flank a central target. Measures involuntary attentional capture by emotional stimuli.

0 implementations

Emotional Stroop

Name ink color of emotionally valenced words. Slowed naming for emotional words indexes attentional capture.

0 implementations

Fear-Potentiated Startle

Startle probe during a fear-conditioned stimulus produces enhanced eyeblink. Measures conditioned fear physiologically.

0 implementations

IAPS Viewing

View standardized emotional images while physiological/neural responses are measured.

0 implementations

Monetary Incentive Delay (MID) Task

Cue signals potential monetary gain or loss; participant must respond fast enough to a target to win/avoid the outcome. Dissociates reward anticipation from receipt; widely used in fMRI reward research.

1 implementation

Mood Induction Procedures

Film clips, music, or recall used to induce transient mood states as experimental variables.

0 implementations

Startle Reflex Modulation

Eyeblink startle to sudden noise during emotional images — potentiated during negative, attenuated during positive.

0 implementations

Trier Social Stress Test (TSST)

Public speaking + mental arithmetic before evaluators. Gold-standard lab stress induction producing cortisol responses.

0 implementations

Creativity 6

Alternate Uses Task (AUT)

Generate as many unusual uses for a common object (e.g., brick) as possible. Scores fluency, flexibility, and originality.

0 implementations

Remote Associates Test (RAT)

Given three words (e.g., "falling, actor, dust"), find a fourth linking them all ("star"). Measures convergent creative thinking.

0 implementations

Metacognition 6

Ease of Learning (EOL)

Before study, judge how easy each item will be to learn. Measures pre-study metacognitive prediction.

0 implementations

Feeling of Knowing (FOK)

After failing to recall, judge the likelihood of recognizing the item later. Prospective metacognitive judgment.

0 implementations

Judgment of Learning (JOL)

After studying each item, predict the likelihood of recalling it later. Accuracy measures metacognitive monitoring.

0 implementations

Perceptual Confidence / Meta-d'

After perceptual discrimination, rate confidence. Meta-d' quantifies metacognitive sensitivity independently of task performance.

1 implementation

Motor Control 8

Finger Tapping Task

Tap a key as fast as possible (or at a specified rate). Measures motor speed, rhythm, and lateralization.

2 implementations

Fitts's Law Pointing

Move to targets of varying distance and width. Movement time scales logarithmically with index of difficulty.

2 implementations

Force-Field Adaptation

A robotic arm applies velocity-dependent forces during reaching; participants learn to compensate. Measures internal model formation.

0 implementations

Grip Force Task

Lift an object and maintain stable grip; perturbations reveal predictive and reactive force control.

0 implementations

Mirror Tracing

Trace a shape while viewing only a mirror reflection. Measures visuomotor adaptation and procedural learning.

0 implementations

Purdue Pegboard

Place pegs into holes as quickly as possible with each hand and both together. Measures fine manual dexterity.

0 implementations

Pursuit Rotor Task

Participants attempt to keep a hand-held stylus (or a cursor under mouse/finger control) in continuous contact with a small target that moves along a circular path on a rotating turntable. Time-on-target across trials and sessions indexes visuomotor tracking ability and procedural motor skill learning.

0 implementations

Visuomotor Rotation Task

Cursor feedback is rotated relative to hand movement; participants adapt reaching over trials. Measures sensorimotor adaptation.

0 implementations

Numerical Cognition 6

Give-N Task

Experimenter asks the child to place exactly N objects (e.g., 'Give me three fish') in a container, varying N across trials. Canonical assessment of early-childhood number-word knowledge; performance classifies children as 'one-knowers', 'two-knowers', 'three-knowers', 'four-knowers', or 'cardinal-principle knowers'.

1 implementation

Number Comparison (Symbolic)

Judge which of two Arabic digits is larger. Distance effect reveals analogue magnitude representation.

0 implementations

Number Line Estimation

Place a number on a physical line anchored at 0 and 100/1000. Shift from logarithmic to linear mapping tracks development.

0 implementations

SNARC Task

Classify numbers while responding left/right. Faster left responses to small numbers reveals spatial–numerical mapping.

3 implementations

Subitizing

Enumerate briefly flashed dot arrays. Fast and accurate for 1–4 items (subitizing range), slower beyond.

0 implementations

Developmental 16

A-not-B Error Task

Infant searches at location A after repeated finds there, even after watching the toy moved to B. Measures object permanence.

0 implementations

Accent Perception

Listeners hear speech in different regional, social, or non-native accents and rate or categorize the speakers along social-evaluative dimensions (e.g. friendliness, intelligence, geographic origin) or make perceptual judgements (intelligibility, dialect identification). Developmental version (Kinzler line) tracks the emergence of accent-based social preferences in children.

1 implementation

Causal Attribution (Blicket Detector)

Child observes which objects activate a novel machine (the 'blicket detector') and infers which objects have the hidden causal property. Used to study early causal-mechanism learning, screening-off, and Bayesian causal-graph reasoning in preschoolers. Generalizes to a broad family of multi-agent / multi-cue causal-responsibility judgements.

3 implementations

Conservation Task

Transform the appearance of a quantity (e.g., pour water into a taller glass) and ask if the amount changed. Piagetian concrete operations.

0 implementations

Counterfactual Reasoning

Participant is told a story and asked 'what if X had happened instead?' (counterfactual) or 'what if X happens next time?' (future hypothetical). Measures the ability to represent multiple alternative possibilities, a developmental milestone emerging between ages 3 and 6.

2 implementations

Distributive Justice / Resource Allocation

Participant decides how to distribute resources (stickers, coins, snacks) among recipients who differ on dimensions such as need, merit, group membership, or prior generosity. Used to study the development of cooperation, fairness, in-group bias, and reciprocity from preschool age onward.

2 implementations

Give-N Task

Experimenter asks the child to place exactly N objects (e.g., 'Give me three fish') in a container, varying N across trials. Canonical assessment of early-childhood number-word knowledge; performance classifies children as 'one-knowers', 'two-knowers', 'three-knowers', 'four-knowers', or 'cardinal-principle knowers'.

1 implementation

Head-Turn Preference Procedure (HPP)

Infant is seated between two side lights and audio speakers. A flashing light attracts the infant's gaze toward a speaker; a sustained auditory stimulus then plays from that side and continues until the infant looks away. Looking time toward each side serves as an index of relative interest in the two auditory stimulus types. Standard methodology for testing infant speech perception, word segmentation, and phonotactic learning.

0 implementations

Looking-While-Listening

Infant or child views two pictures on a screen while hearing a spoken sentence labelling one of them; eye movements to the target picture are tracked over time. Developmental adaptation of the visual world paradigm, used to measure speed and accuracy of spoken-word recognition in young children. Standard in infant psycholinguistics; underpins the Peekbank repository of looking-while-listening datasets.

5 implementations

Pedagogical Sampling

Child is shown how a novel toy works by either (a) a pedagogical demonstrator who frames the action as deliberate instruction or (b) a non-pedagogical demonstrator. Children's subsequent exploration is measured: pedagogical demonstration narrows exploration to the demonstrated function, whereas non-pedagogical demonstration leaves exploration broad. Used to study how children infer the informativeness of evidence under pedagogical assumptions.

0 implementations

Picture Sequence Memory

Remember and reproduce the order of a sequence of activity pictures. NIH Toolbox episodic memory measure for all ages.

0 implementations

Preferential Looking

Present two stimuli side by side; differential looking time reveals visual preference or discrimination in pre-verbal infants.

5 implementations

Pronoun Resolution (Binding Principles)

Participant hears a sentence containing a pronoun or reflexive (e.g. 'Mama Bear is washing her' vs 'Mama Bear is washing herself') and judges its truth against a picture. Tests knowledge of the syntactic binding principles (Principle A for reflexives, Principle B for pronouns) and their pragmatic counterparts. Canonical developmental probe of the Delay of Principle B Effect.

0 implementations

Selective Trust

Two informants label or describe novel objects: one is consistently accurate or knowledgeable, the other inaccurate or ignorant. Children are then asked which informant to learn from, ask, or endorse. Measures the developmental emergence of epistemic vigilance and trust calibration to informant reliability.

1 implementation

Violation of Expectation (VoE)

Infants look longer at "impossible" events (e.g., object through solid barrier). Looking time indexes early physical knowledge.

12 implementations

Clinical / Screening 5

Clock Drawing Test

Draw a clock face showing a specified time. Screens for visuospatial, executive, and semantic deficits.

0 implementations

Auditory Processing 3

Categorical Perception

Participants categorise stimuli that vary along an acoustic continuum (most commonly speech sounds) into discrete perceptual categories. The hallmark is sharper discrimination across category boundaries than within. Heavily used in studies of phoneme perception, especially non-native speech learning (e.g. /r/–/l/ for Japanese listeners, dental vs retroflex for English listeners).

0 implementations

McGurk Effect

Mismatched audio (e.g. /ba/) and visual (e.g. /ga/) syllables fuse into a third percept (e.g. /da/). Indexes audiovisual integration in speech perception.

1 implementation

Phonological Awareness

Family of tasks that probe a participant’s awareness of and ability to manipulate the sound structure of language at the syllable, onset-rime, and phoneme level. Includes rhyme judgment, phoneme deletion, syllable counting, and segmentation. A foundational predictor of reading acquisition in school-age children.

0 implementations

Inhibitory Control 1

Gradual Continuous Performance Task (gradCPT)

A continuous performance task variant in which stimuli fade smoothly from one to the next (gradient cross-fades, no abrupt onsets), so target-onset times are implicit. Participants respond to frequent go-targets and withhold for rare no-go targets; the continuous fading makes withholding effortful and exposes lapses of sustained attention via commission errors, reaction-time variability, and vigilance-decrement slopes. Introduced by Esterman et al. (2013) as a sensitive probe of sustained attention.

0 implementations

Object Recognition 2

Fast Periodic Visual Stimulation (FPVS)

Stimuli are presented at a fixed base frequency (typically 6 Hz) with a different stimulus type — an "oddball" — appearing periodically (e.g. every 5th image, giving 1.2 Hz). EEG responses at the oddball frequency (and its harmonics, excluding base-frequency multiples) provide an objective, implicit index of how readily the brain discriminates the oddball category from the base. The 6 Hz response indexes general visual processing. Widely used for face individuation, object categorisation, and semantic categorisation without requiring explicit behavioural responses.

0 implementations

Glasgow Face Matching Test (GFMT)

Unfamiliar-face matching: decide whether two simultaneously presented face photographs (typically taken with different cameras) depict the same identity. Distinct from face memory tasks — taps perceptual face matching without memory load.

1 implementation

Processing Speed 2

Mental Arithmetic

Solve simple or multi-digit arithmetic problems mentally, typically under time pressure. Used as a working-memory loading task, a processing-speed measure, and a cognitive-load benchmark. Distinct from number-comparison (symbolic magnitude judgment without arithmetic) and from approximate-number-system tasks (non-symbolic).

0 implementations

Paced Auditory Serial Addition Test (PASAT)

Digits are presented auditorily at a fixed pace; participant adds each digit to the immediately preceding one and reports the running sum. Indexes sustained attention, working memory, and processing speed; clinical staple in MS and TBI.

1 implementation

Reading 6

Orthographic Decision

Participant judges whether a written letter string conforms to the orthographic conventions of a language (typically: correctly spelled vs misspelt). Distinct from Lexical Decision (real vs non-word): orthographic decision probes orthographic processing and spelling knowledge specifically. Common in developmental reading assessment.

0 implementations

Picture–Written Word Matching

Participant sees a picture and selects the matching written word (or short sentence) from a small set of alternatives. Inverse of Written Word–Picture Matching; probes word-reading and orthographic mapping. A reading-modality variant of the Picture Vocabulary Test (PPVT).

0 implementations

Reading Comprehension

Participant silently reads a short text and answers questions about its content. Standard educational and clinical assessment of reading comprehension, distinct from naturalistic-listening narrative comprehension paradigms.

0 implementations

Single-Word Reading

Participant silently reads single written words (or sentences presented word-by-word, RSVP-style) while behavioural or neural responses are recorded. Distinct from word-naming (which involves articulation) and lexical-decision (which involves an explicit word/non-word judgement). The backbone paradigm for ERP and MEG studies of orthographic, lexical, and semantic access.

0 implementations

Spoken Word–Written Form Matching

Participant hears a word (or pronounceable non-word) and selects the matching written form from a small set of alternatives. Tests phoneme-to-grapheme mapping and orthographic word recognition in a cross-modal variant of the Lexical Decision Task. Non-word trials probe systematic decoding rather than lexical lookup.

0 implementations

Written Word–Picture Matching

Participant reads a written word (or short sentence) and selects the matching picture from a small set of alternatives. A reading-modality variant of the Picture Vocabulary Test (PPVT): probes receptive vocabulary and reading comprehension at the word level. Used in early-reading assessment for school-age children.

0 implementations

Reasoning 4

Causal Attribution (Blicket Detector)

Child observes which objects activate a novel machine (the 'blicket detector') and infers which objects have the hidden causal property. Used to study early causal-mechanism learning, screening-off, and Bayesian causal-graph reasoning in preschoolers. Generalizes to a broad family of multi-agent / multi-cue causal-responsibility judgements.

3 implementations

Cognitive Reflection Test (CRT)

Short item set (typically 3-7 questions) where the intuitive answer is wrong and reflection is required to reach the correct one (e.g. "A bat and ball cost $1.10…"). Scores reflective vs. heuristic thinking.

1 implementation

Counterfactual Reasoning

Participant is told a story and asked 'what if X had happened instead?' (counterfactual) or 'what if X happens next time?' (future hypothetical). Measures the ability to represent multiple alternative possibilities, a developmental milestone emerging between ages 3 and 6.

2 implementations

Pedagogical Sampling

Child is shown how a novel toy works by either (a) a pedagogical demonstrator who frames the action as deliberate instruction or (b) a non-pedagogical demonstrator. Children's subsequent exploration is measured: pedagogical demonstration narrows exploration to the demonstrated function, whereas non-pedagogical demonstration leaves exploration broad. Used to study how children infer the informativeness of evidence under pedagogical assumptions.

0 implementations

Risk & Decision Making 5

Berlin Numeracy Test (BNT)

Brief adaptive test of statistical numeracy and risk literacy via probability and Bayesian inference questions. Sensitive to risk-comprehension differences in highly educated samples where older numeracy scales saturate. Adaptive 2–3 item version available for fast deployment.

1 implementation

Columbia Card Task (CCT)

Sequentially turn over cards to gain points; some cards trigger a loss. Hot and Cold variants differ in affective engagement (continuous feedback vs. one-shot static choice), separating affective from deliberative risk-taking.

2 implementations

Holt-Laury Task

Multiple-price-list lottery elicitation: participants choose between paired lotteries whose expected values progressively favour the riskier option. Switch point indexes risk aversion under prospect theory.

1 implementation

Numeracy

Family of brief tests measuring statistical numeracy, probability reasoning, and risk literacy. Used as a covariate in decision-making research and as an outcome in numeracy-intervention studies. Members would include berlin-numeracy-test (proposed) plus established scales like Lipkus and Schwartz numeracy.

0 implementations

Risk-Sensitive Learning Task

Reinforcement-learning variant where one option delivers a fixed payoff and the other a variance-matched gamble with the same expected value. Probes how learning history shapes risk preferences and asymmetric value updating.

4 implementations

Spatial Cognition 1

Spatial Exploration Bandit

Participants choose locations on a 2D grid to discover hidden rewards, aiming to maximise cumulative score across a fixed number of rounds. Combines elements of multi-armed bandits (each cell is an arm with an unknown reward) and spatial exploration (the spatial layout encourages structured rather than random search). Distinct from patch-foraging (no patch depletion) and the classical two-armed bandit (large action space + spatial structure).

0 implementations