Digit Symbol Substitution Test
Symbol Digit Modalities Test
What it measures
Digit Symbol Substitution Test measures processing speed, working memory, visuospatial processing, and attention [1]
Outcome measures
Digit Symbol Substitution Test
An increase in score on this outcome should be interpreted as an improvement. Higher scores are better.
Reaction Time
A decrease in score on this outcome should be interpreted as an improvement.
Digit Symbol Substitution Total Clicks
An increase in score on this outcome should be interpreted as an improvement. Higher scores are better.
Wrong Clicks
A decrease in score on this outcome should be interpreted as an improvement.
Correct Clicks
An increase in score on this outcome should be interpreted as an improvement. Higher scores are better.
How it measures
Numbers 1-9 are paired with a symbol. Below the mapping of numbers to symbols are a series of the numbers 1-9 in random order. The participant is asked to fill in the corresponding symbol for each number.