Temporal stability of the Wisconsin Card Sorting Test in an untreated patient sample

Area of Science:

• Neuropsychology
• Clinical Psychology
• Sleep Medicine

Background:

• The Wisconsin Card Sorting Test (WCST) is a key neuropsychological tool for assessing executive functions.
• Previous research indicated low test-retest reliability for the WCST in elderly, non-patient samples.
• Concerns about WCST temporal stability may limit its clinical application.

Purpose of the Study:

• To evaluate the test-retest reliability of the Wisconsin Card Sorting Test (WCST) in untreated obstructive sleep apnea (OSA) patients.
• To determine if WCST scores are stable over time in a clinically relevant patient group.
• To address previous concerns regarding the temporal stability of the WCST.

Main Methods:

• The study included 29 untreated obstructive sleep apnea patients.
• WCST performance was assessed twice to measure test-retest reliability.
• Eleven key WCST scores were analyzed for temporal stability.

Main Results:

• Test-retest correlations for the 11 WCST scores ranged from .34 to .83, with a mean of .64.
• Six of the 11 scores met or exceeded the .80 criterion for clinical utility.
• Minimal score changes were observed between testing sessions, indicating stability.

Conclusions:

• The WCST demonstrates acceptable temporal stability in untreated obstructive sleep apnea patients.
• Findings support the clinical utility of the WCST for assessing executive functions in OSA populations.
• This study provides evidence for greater optimism regarding WCST test-retest reliability in clinical settings.