Cognitive abilities and functional capacity in older adults: results from the modified Scales of Independent Behavior-Revised.
The relationship between cognitive and functional abilities was examined in a sample of community-dwelling older adults. Self and informant (e.g., spouse) reports of participants' functional status were obtained on the modified Scales of Independent Behavior-Revised (mSIB-R). Participants also completed measures of processing speed, episodic memory, executive functioning, and verbal ability. Results showed that the mSIB-R correlated positively with cognitive variables. Hierarchical regression analyses suggested that each mSIB-R factor is predicted by somewhat different cognitive variables, after adjusting for demographic, health, and motor variables. This report-based measure was as accurate as a performance-based measure in classifying cognitive groups. Informant social/cognitive engagement and self physical/environment engagement factors showed the most promise in this regard. The findings reveal links between cognitive and functional abilities in a sample with varying degrees of cognitive impairment.
Tan
Jing Ee
JE
Department of Psychology, University of Victoria, Victoria, BC, Canada. jtan@uvic.ca
Hultsch
David F
DF
Strauss
Esther
E
D000203:Activities of Daily Living / Q000523:psychology; D000368:Aged; D000369:Aged, 80 and over; D003071:Cognition; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory; D009483:Neuropsychological Tests; D011237:Predictive Value of Tests; D012044:Regression Analysis; D012919:Social Behavior; D014705:Verbal Behavior