The evaluation of insufficient cognitive effort in schizophrenia in light of low IQ scores
| Autor: | Gregory P. Strauss, Daniel N. Allen, Bern G. Lee, Kayla M. Whearty |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male medicine.medical_specialty Intelligence Population Neuropsychological Tests Audiology Task Performance and Analysis medicine Memory span Humans Psychiatry education Biological Psychiatry Motivation education.field_of_study medicine.diagnostic_test Intelligence quotient Neuropsychology Cognition Neuropsychological test Middle Aged medicine.disease Psychiatry and Mental health Schizophrenia Finger tapping Female Psychology |
| Zdroj: | Journal of Psychiatric Research. 68:397-404 |
| ISSN: | 0022-3956 |
| Popis: | Low IQ has recently been shown to predict neuropsychological effort test failure in healthy and neurological populations. Although low IQ is common in schizophrenia (SZ), its effect on effort test performance remains unclear in this population. The current study examined the role of IQ in effort test performance in a sample of 60 outpatients with SZ and 30 demographically matched healthy controls (CN). Participants were administered a battery of neuropsychological tests, and insufficient effort was calculated using two embedded effort indices: the Reliable Digit Span Effort Index and the Finger Tapping Effort Index. Results indicated that 16.1% of SZ patients and 0% CN failed both effort measures and that 32.1% of SZ and 3.3% of CN failed one measure. In SZ, IQ in the70 or 70-79 range was associated with the highest rates of falling below the effort cut-off scores; however, patients with IQs in the low-average or higher range (80) did not fall below effort cut-offs. Findings suggest that low IQ is a significant predictor of insufficient effort during neuropsychological test performance in schizophrenia, calling into question the validity of neuropsychological effort testing in SZ patients with low IQ. |
| Databáze: | OpenAIRE |
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