The Spatial Span Test measures visuospatial working memory capacity using the Corsi block-tapping task.
- A 3×3 grid of blocks is displayed.
- Blocks light up one at a time in a specific sequence.
- After the sequence completes, reproduce it by clicking the blocks in the same order.
- Training mode: Fixed difficulty range. After 3 correct answers, sequence length increases once to the upper bound of the selected range, then stays there for the remaining trials.
- Assessment mode: Sequence length increases after every correct answer and the session ends on the first failure. Your max span is your score.