Visuoconstructional Impairment in Subtypes of Mild Cognitive Impairment

摘要: Clock Drawing Test performance was examined alongside other neuropsychological tests in mild cognitive impairment (MCI). We tested the hypothesis that clock-drawing errors are related to executive impairment. The current research 86 patients with MCI for whom, prior research, cluster analysis used sort into dysexecutive (dMCI, n = 22), amnestic (aMCI, 13), and multidomain (mMCI, 51) subtypes. First, principal components (PCA) linear regression relations between test independent of subtype. Second, between-group differences were assessed variance (ANOVA) where subgroups compared normal controls (NC). PCA yielded a 3-group solution. Contrary expectations, loaded lower on naming/lexical retrieval, rather than tests. Regression analyses found increasing command associated worse only retrieval ANOVAs revealed no dMCI versus mMCI or aMCI NCs. Both groups generated more NC condition. In MCI, language-related skills contribute