Symbol Digit Modalities Test (SDMT)
Match symbols to digits using a key as quickly as possible. Measures processing speed and incidental learning.
- Clinical / Screening
Indexed implementations 3
Metadata only — each row links to the authors' own page. A date in the last column is the last time an automated check confirmed the link loads; it is not a review of the task.
| Implementation | Source | Languages | Link checked |
|---|---|---|---|
| Digit Symbol Substitution Test · PsyToolkit | PsyToolkit | English | 2026-05-07 |
| TMB Digit Symbol Matching · TestMyBrain | TestMyBrain | English, Spanish, Simplified Chinese, Traditional Chinese, Finnish, Dutch, Brazilian Portuguese | 2026-05-12 · not launch-checked |
| Digit symbol matching · jsPsych Demos | jsPsych demos | English | 2026-05-28 |