Self-report measures of executive function problems correlate with personality, not performance-based executive function measures, in non-clinical samples

摘要

Researchers and clinicians often measure executive function in patients and normal samples. In addition to cognitive tests that objectively measure executive function, several instruments have been developed that address individuals’ everyday experience of executive problems. Such self-report measures of executive problems may have value, but there are questions about the extent to which they tap objectively-measurable executive problems or are influenced by variables such as personality. Relationships between self-reported executive problems, personality, and cognitive test performance were assessed in three separate, well-powered, methodologically distinct correlational studies using non-clinical samples. These studies used multiple measures of personality and self-reported executive function problems. Across all three studies, self-reported executive function problems were found to correlate with neuroticism and with low conscientiousness, with medium to large effect sizes. However self-reported problems did not correlate with performance on Trail Making, Phonemic Fluency, Semantic Fluency or Digit Span tests tapping executive function. A key implication of these findings is that in non-clinical samples, self-report questionnaires may not be proxies for executive functioning as measured by neuropsychological tests.