Digit Span Test
Digits flash one at a time. Type them back in order (forward or backward).
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Digits will appear one at a time. Memorize them, then type them back.
Choose your mode: Forward (as shown) or Backward (reversed order).
How It Works
Choose forward or backward mode. In forward mode, digits appear one at a time and you type them back in the same order. In backward mode, you must reverse the order.
Start with 3 digits. Each successful round adds one more digit. Keep going until you make a mistake. Your score is the maximum number of digits you remembered.
About Digit Span
Working Memory
The digit span test measures working memory capacity - your ability to hold and manipulate information in your mind. Average forward span is 7±2 digits (Miller's Law).
Forward vs Backward
Forward digit span tests simple recall. Backward digit span is harder because it requires mental manipulation. Backward span averages 2-3 digits less than forward.
Clinical Use
Digit span is part of many IQ tests (WAIS, Stanford-Binet) and cognitive assessments. It correlates with attention, concentration, and cognitive processing speed.
Improving Your Span
Chunking (grouping digits), rehearsal, and practice can improve digit span. Working memory training may help, though benefits don't always transfer to other tasks.