Deficits in visual working-memory capacity and general cognition in African Americans with psychosis.

ABSTRACT: On average, patients with psychosis perform worse than controls on visual change-detection tasks, implying that psychosis is associated with reduced capacity of visual working memory (WM). In the present study, 79 patients diagnosed with various psychotic disorders and 166 controls, all African Americans, completed a change-detection task and several other neurocognitive measures. The aims of the study were to (1) determine whether we could observe a between-group difference in performance on the change-detection task in this sample; (2) establish whether such a difference could be specifically attributed to reduced WM capacity (k); and (3) estimate k in the context of the general cognitive deficit in psychosis. Consistent with previous studies, patients performed worse than controls on th

SUBMITTER: Mathias SR 

PROVIDER: S-EPMC5825248 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature