Cognitive profile difference between Allen Cognitive Levels 4 and 5 in schizophrenia

• Published in: The American journal of occupational therapy Vol. 65; no. 4; pp. 453 - 461
• Main Authors: Su, Chwen-Yng, Tsai, Pei-Chun, Su, Wei-Lieh, Tang, Tze-Chun, Tsai, Athena Yi-Jung
• Format: Journal Article
• Language: English
• Published: United States American Occupational Therapy Association 01.07.2011; American Occupational Therapy Association, Inc
• Subjects: Activities of daily living; Adolescent; Adult; Aged; Care and treatment; Classification; Cognition & reasoning; Cognition Disorders - complications; Cognitive ability; Cross Cultural Studies; Cross-Sectional Studies; Cues; Diagnosis; Differentiation; Disability; Discriminant Analysis; Executive function; Female; Humans; Individualized Instruction; Information Processing; Interpersonal Competence; Interrater Reliability; Logical Thinking; Male; Memory; Mental Disorders; Middle Aged; Multivariate Analysis; Occupational therapy; Occupational Therapy - methods; Psychiatric Status Rating Scales; Psychiatry; Research Design; Resistance (Psychology); Schizophrenia; Schizophrenia - complications; Schizophrenia - rehabilitation; Severe Disabilities; Short Term Memory; Skill Development; Social Cognition; Social Problems; Statistical Analysis; Test Results; Verbal memory; Young Adult; Taiwan
• ISSN: 0272-9490; 1943-7676
• DOI: 10.5014/ajot.2011.000711

We compared the pattern of cognitive deficits exhibited by people with schizophrenia at Allen Cognitive Level (ACL) 4 with that of people at Level 5. Participants were classified into two groups on the basis of their ACL Screen scores: ACL 4 (n = 35) and ACL 5 (n = 41). We assessed cognitive functions and psychotic symptoms in all participants. Multivariate analysis of covariance controlling for gender and negative symptoms revealed that people at ACL 4 performed significantly worse than those at ACL 5 on processing speed, verbal memory, and working memory. The discriminant analysis with all cognitive variables produced a classification accuracy of 78% in differentiation of cognitive levels. We verified the validity of the hierarchy of cognitive disability for ACLs 4 and 5 in people with schizophrenia.