Showing 1 - 2 of 2 Research Library Publications

Relationships Between Cognitive Complaints and Quality of Life in Older Adults With Mild Cognitive Impairment, Mild Alzheimer Disease Dementia, and Normal Cognition

Posted: | S. D. Stites, K. Harkins, J. D. Rubright, J. Karlawish

Alzheimer Disease & Associated Disorders: October–December 2018 - Volume 32 - Issue 4 - p 276-283

 

The purpose of this study is to examine the relationship between self-reports of cognitive complaints and quality of life (QOL) in persons with varying degrees of cognitive impairment.

Category:Health Professions

The Use of Multivariate Generalizability Theory to Evaluate the Quality of Subscores

Posted: | Z. Jiang, M.R. Raymond

Applied Psychological Measurement: Volume: 42 issue: 8, page(s): 595-612

 

Conventional methods for evaluating the utility of subscores rely on reliability and correlation coefficients. However, correlations can overlook a notable source of variability: variation in subtest means/difficulties. Brennan introduced a reliability index for score profiles based on multivariate generalizability theory, designated as G, which is sensitive to variation in subtest difficulty. However, there has been little, if any, research evaluating the properties of this index. A series of simulation experiments, as well as analyses of real data, were conducted to investigate G under various conditions of subtest reliability, subtest correlations, and variability in subtest means.

Category:Assessment-Oriented Research, Reliability/Validity, Scoring