Neuropsychological predictors of adaptive kitchen behavior in geriatric psychiatry inpatients.

This study examined the degree to which demographic variables, psychiatric diagnosis, depression rating, and neuropsychological test performance predict adaptive kitchen behavior in geriatric psychiatry patients and normal elderly volunteers. Amixed group of 27 participants including 8 normal volunteers and 19 geriatric psychiatry inpatients underwent psychiatric evaluation, neuropsychological testing, and a kitchen skills assessment conducted in a natural setting. Both depression and dementia were prevalent among patients. The kitchen skills assessment was abnormal in 69% of patients, compared to none of the normal volunteers. Estimated premorbid IQs, psychiatric diagnosis, and neuropsychological test scores significantly predicted the pass/fail status on the kitchen skills assessment, but there was no effect for age, education, gender, or depression. The discriminant function analysis classified 92% of cases, and the canonical correlation coefficient was .84. Of the neuropsychological tests employed in the study, two tests involving visuospatial processing and attention were retained in the discriminant function analysis. The results are consistent with previous studies that suggest that visuospatial tasks are more predictive of instrumental activities of daily living than are cognitive tasks emphasizing verbal and memory abilities. In addition, we conclude that neuropsychological test data are useful and valid for the purpose of guiding clinical judgments regarding activities of daily living in geriatric psychiatry patients.