The Processing-Speed Impairment in Psychosis Is More Than Just Accelerated Aging.

ABSTRACT: Processing speed is impaired in patients with psychosis, and deteriorates as a function of normal aging. These observations, in combination with other lines of research, suggest that psychosis may be a syndrome of accelerated aging. But do patients with psychosis perform poorly on tasks of processing speed for the same reasons as older adults? Fifty-one patients with psychotic illnesses and 90 controls with similar mean IQ (aged 19-69 years, all African American) completed a computerized processing-speed task, reminiscent of the classic digit-symbol coding task. The data were analyzed using the drift-diffusion model (DDM), and Bayesian inference was used to determine whether psychosis and aging had similar or divergent effects on the DDM parameters. Psychosis and aging were both associated

SUBMITTER: Mathias SR 

PROVIDER: S-EPMC5472152 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature