Symbol Digit Modalities Test.
SDMT
Processing speed, sustained attention, working memory (substitution)
- Provisionally grouped under
- Length and format
- 9 symbol-digit key; substitute as many as possible in 90 seconds (max ~110). speeded symbol-digit substitution, oral or written (performance), correct substitutions (performance/ability test)
- Language versions
- Used worldwide; largely language-free; localized norms (and oral version for motor impairment)
- Licence
- copyrighted - commercial
The rights holder controls how this one may be used, so the route to it runs through the publisher or the author. We hold no direct link for it; the reference below is the citation to search from.
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- Reference
- Smith A. Symbol Digit Modalities Test. Western Psychological Services; 1982.
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