Digit Span
System Requirements
Minimum: 800×600
Recommended: 1280×800
Description
A test of verbal working memory where participants recall sequences of digits in forward and backward order. See spanvariants for an improved more flexible test
About This Test
This is the 'classic' digit span test from PEBL, but an improved version is available in the spanvariants task which includes running a series of letter/number/mixed span in forward/backward and ordered recall. dspan/digitspan allows running a single forward or backward span task, under a number of settings/parameters. These include auditory stimuli, procedure (staircase, small-to-large, and largest-to-smallest, control over presentation timing, and success criteria.
Test Details
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Scientific Background
PEBL-Specific References:
These studies used the PEBL version of this task.
- Croschere, J., Dupey, L., Hilliard, M., Koehn, H., & Mayra, K. (2012). The effects of time of day and practice on cognitive abilities: Forward and backward Corsi block test and digit span. PEBL Technical Report Series [On-line], #2012-03.
Data Output
Creates multiple data files: (1) dspan-<direction>-<subnum>.csv with columns: subnum, version (1=low-to-high, 2=high-to-low, 3=staircase), direction (forward/backward), endearly (whether testing ends early), trialnum (trial number), length (sequence length), try (attempt number at this length), input (stimulus sequence), response (participant response), correct (trial accuracy), resptime (response time in ms); (2) dspan-report<direction>-<subnum>.txt containing text summary report; (3) pooled-dspan-<direction>-<subnum>.csv with columns: subnum, timestamp, direction, final_length (span achieved), sumcorrect (total correct trials).
About This Test
A test of verbal working memory where participants recall sequences of digits in forward and backward order. See spanvariants for an improved more flexible test
Category: Memory
Estimated Duration: 10 minutes
Available Translations: 8 languages
Documentation Sources:
Test description file, Test implementation, PEBL wiki archive, Parameter schema
Documentation Status: Complete