The Validity of the Rorschach and the Minnesota Multiphasic Personality Inventory: Results from Meta-Analyses |
| |
Authors: | Howard N. Garb,Colleen M. Florio,& William M. Grove |
| |
Affiliation: | Pittsburgh VA Health Care System and Universityof Pittsburgh,;Roswell Park Cancer Institute, Buffalo, NY,;University of Minnesota |
| |
Abstract: | Results from meta-analyses have been widely cited to defend the validity of the Rorschach. However, the meta-analyses have been flawed. For example, one meta-analysis included results that were obtained by calculating correlations but not results that were obtained by conducting t tests or analyses of variance. When we reanalyzed the data from the most widely cited meta-analysis (Parker, Hanson, & Hunsley, 1988), we found that for confirmatory studies (also called convergent-validity studies), the Minnesota Multiphasic Personality Inventory (MMPI) explained 23% to 30% of the variance, whereas the Rorschach explained only 8% to 13% of the variance. These results indicate that the Rorschach is not as valid as the MMPI. |
| |
Keywords: | |
|
|