Title

A factor analysis of the Halstead-Reitan Neuropsychological Battery to investigate the generalized and lateralization effects of brain damage

Date of Award

1991

Availability

Article

Degree Name

Doctor of Philosophy (Ph.D.)

Department

Psychology

First Committee Member

Ray W. Winters, Committee Chair

Second Committee Member

Elbert W. Russell, Committee Member

Abstract

Following in the direction of Halstead who was looking for a general effect of brain damage, this study examined the Halstead-Reitan Neuropsychological Test Battery by a factor analytic approach. Both a control group of a normal population as well as a group of brain damaged adults with identified right hemisphere, left hemisphere and diffuse damage were utilized. A principal component analysis with orthogonal Varimax rotation of 37 variables produced ten factors in the normal population and six factors in the brain-damaged group. Two higher order factors emerged for the brain-damaged group via an oblique rotation of the first order factors, indicating a general effect which divided between right and left hemispheric functions. In both groups, the two strongest factors were designated verbal comprehension and performance/problem solving. Three factors in the brain-damaged group were clearly related to lateralized brain damage. In the normal population, age appeared to be inversely and marginally related to the strong Performance factor and the Motor factor while education loaded strongly on the Verbal factor. Analyses of Variance were performed on factor scores for each of the six factors in the brain-damaged group to clarify the relationship each type of damage with each factor, followed by the Scheffe Test for all possible comparisons of means. All six analyses were significant at the p $<$.001 level, and showed which site of damage was most strongly related to each factor.

Keywords

Psychology, Psychobiology; Psychology, Clinical; Psychology, Psychometrics

Link to Full Text

http://access.library.miami.edu/login?url=http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9201117