Psychopathology in individuals with severe obesity who seek weight-loss surgery: An MMPI-2 study
Research addressing psychopathology in individuals with severe obesity who seek weight-loss surgery is fraught with methodological problems and inconsistent findings. A meta-analysis including four MMPI and three MMPI-2 studies showed consistency with a medium to large effect size, indicating that the use of the MMPI and MMPI-2 may address these problems in the literature. However, interpretive caution is suggested due to the use of the K-correction, lack of data on the Restructured Clinical (RC) scales, and unknown effects of Body Mass Index and socioeconomic status. To address these concerns, the present study utilized MMPI-2 profiles of 191 participants to replicate previous findings, apply newer psychometric theory to results, and clarify resulting questions. MANOVAs revealed statistically significant differences between participants and the MMPI-2 normative group on HEA in males (n = 33) and Clinical Scales 1(Hy) and 3(Hs) in females (n = 158), with small effect sizes. A non-significant effect was found for Body Mass Index (BMI) and psychopathology. Hierarchical cluster analysis revealed two similar clusters with differing levels of somatic concerns. Socioeconomic status, discriminant validity issues, and the use of the K-correction have likely created the appearance of more psychopathology than is actually present in this population. Implications for future research are discussed. (PsycINFO Database Record (c) 2007 APA, all rights reserved)
https://www.upress.umn.edu/test-division/bibliography/2000-2009/2006/greenbank_psychopathology_2006
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Amy Greenbank
(2006)
Psychopathology in individuals with severe obesity who seek weight-loss surgery: An MMPI-2 study
PhD thesis.