Practice effects on the Wisconsin Card Sorting Test-64 Card version across 12 months

Area of Science:

• Neuropsychology
• Cognitive Psychology
• Psychometrics

Background:

• The Wisconsin Card Sorting Test (WCST) is a key executive function assessment.
• A shorter version, the WCST-64, offers similar psychometric properties.
• Limited data exists on the WCST-64's test-retest reliability.

Purpose of the Study:

• To investigate the effects of repeated administration on the WCST-64.
• To assess the reliability of the WCST-64 for longitudinal research.
• To provide reliable change indices for the WCST-64.

Main Methods:

• 53 adult men were re-administered the WCST-64 after a 12-month interval.
• Scores on WCST-64 indices were analyzed for changes over time.
• Reliable change indices were calculated.

Main Results:

• Significant improvements were observed in WCST-64 scores after 12 months.
• The WCST-64 demonstrates stability and sensitivity to change.
• Reliable change indices were established for key WCST-64 measures.

Conclusions:

• The WCST-64 is suitable for longitudinal research and clinical follow-up.
• Repeated testing on the WCST-64 yields improved performance.
• Reliable change indices aid in interpreting score fluctuations.