Eating-Disorder Patterns in the Minnesota Multiphasic Personaity Inventory Karen Baer-Barkley Andrews University
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Andrews University Digital Commons @ Andrews University Dissertations Graduate Research 1998 Eating-Disorder Patterns in the Minnesota Multiphasic Personaity Inventory Karen Baer-Barkley Andrews University Follow this and additional works at: https://digitalcommons.andrews.edu/dissertations Part of the Mental Disorders Commons, and the Personality and Social Contexts Commons Recommended Citation Baer-Barkley, Karen, "Eating-Disorder Patterns in the Minnesota Multiphasic Personaity Inventory" (1998). Dissertations. 208. https://digitalcommons.andrews.edu/dissertations/208 This Dissertation is brought to you for free and open access by the Graduate Research at Digital Commons @ Andrews University. It has been accepted for inclusion in Dissertations by an authorized administrator of Digital Commons @ Andrews University. For more information, please contact [email protected]. Thank you for your interest in the Andrews University Digital Library of Dissertations and Theses. 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NOTE TO USERS The original manuscript received by UMI contains pages with indistinct print. Pages were microfilmed as received. This reproduction is the best copy available UMI Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Andrews University School of Education EATING-DISORDER PATTERNS IN THE MINNESOTA MULTIPHASIC PERSONALITY INVENTORY A Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy by Karen Baer-Barkley August 1998 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. DMI Number: 9 841469 UMI Microform 9841469 Copyright 1998, by UMI Company. AH rights reserved. This microform edition is protected against unauthorized copying under Title 17, United States Code. UMI 300 North Zeeb Road Ann Arbor, MI 48103 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. EATING DISORDERS PATTERN IN THE MINNESOTA MULTIPHASIC PERSONALITY INVENTORY A dissertation presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy by Karen Baer-Barkley APPROVAL BY THE COMMITTEE: C h a i r : T i m iSpruill Director of Gi/aduate Program Jerome D. Thayer Member. ilfred Dean, ^ of Education Karen R raham tember: John Be Date ^Approved Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ABSTRACT EATING-DISORDER PATTERNS IN THE MINNESOTA MULTIPHASIC PERSONALITY INVENTORY by Karen Baer-Barkley Chair: Tim Spruill Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ABSTRACT OF GRADUATE STUDENT RESEARCH Dissertation Andrews University School of Education Title: EATING-DISORDER PATTERNS IN THE MINNESOTA MULTIPHASIC PERSONALITY INVENTORY Name of researcher: Karen Baer-Barkley Name and degree of faculty chair: Tim Spruill, Ph.D. Date completed: August 1998 Problem Early intervention is crucial for effective treatment of eating disorders. While there have recently been many assessment tools developed specifically for eating disorders, a screening tool is still needed. This study sought to identify, in an eating-disordered sample, the existence of a v-shaped pattern on scales 4-5-6 of the MMPI, a commonly used general measure of psychopathology. Method The sample consisted of 356 females who were being treated for eating disorders through the HOPE program between 1989 and 1996. Past research on the MMPI has Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. produced equivocal results on identifying significant patterns on the clinical scales. Since prior research did not control for the effects of comorbidity, this study considered additional diagnoses in the analysis of the data. Results The results of this research supported the existence of an eating-disorder pattern for anorectic and bulimic subjects that departed significantly from that of a normal population. The v-shaped pattern was tested at four different levels of magnitude. Statistical analysis confirmed that the v-shaped pattern, defined in several different ways, occurred significantly more than would be expected by chance. Additionally, the presence of comorbidity appeared to have little effect on the proportion of individuals showing the V-shaped profile. Conclusions This research supports the existence of a 4-5-6 pattern as a means of identifying individuals appropriate for more focused assessment. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. TABLE OF CONTENTS LIST OF T A B L E S .............................................. v ACKNOWLEDGEMENTS ...........................................vi Chapter I. INTRODUCTION............................................ 1 Background of the Problem ........................ 3 Anorexia Nervosa ............................... 3 Bulimia Nervosa ............................... 5 Factors Contributing to Eating Disorders .... 7 Statement of Problem ............................. 8 Purpose of S t u d y .................................. 10 Research Questions ............................. 10 Conceptual Assumptions ........................ 12 Rationale and Theoretical Framework ........... 13 Delineation of the Research Problem ........... 15 Importance of the S t u d y ........................... 17 Prevalent Problem ........................... 17 Accurate Diagnosis and Early Detection of Bulimia ........................ 18 Cost Reduction ..................................18 Definition of T e r m s ................................19 Anorexia and Bulimia Nervosa ............... 19 Delimitations ................................... 21 O v e r v i e w ........................................... 21 II. REVIEW OF LITERATURE..................................23 Difficulty of Early Detection in Eating Disorders ............................. 24 Significance of Early Detection in Eating Disorders ............................. 24 Eating-Disorder Assessments .................... 25 MMPI and Disordered G r o u p s ..................3 0 MMPI and Eating D i s o r d e r s .................... 40 Summary of MMPI Research and Eating Disorders ........................ 46 Eating-Disorder Pattern on the MMPI .... 49 S u m m a r y .........................................51 iii Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. III. METHODOLOGY 5 3 Introduction ................................... 53 S a m p l e .............................................53 Variables...........................................54 Instrumentation.................................... 54 Development and Rationale of MMPI /MMPI -2 ............................... 55 Procedures...................................... 54 Limitations........................................ 64 Methods of Analysis and Null Hypotheses .... 65 Data A n a l y s i s ..................................65 Null H y p o t h e s e s ............................... 67 IV. PRESENTATION AND ANALYSIS OFDA T A ................... 71 S a m p l e .............................................71 Basic Data for A n a l y s i s ........................... 71 Analysis for Hypothesis Testing ............... 75 Profile Auialysis............................... 75 M e a n s .......................................... 77 The V-Shaped Profile .......................... 86 V-Shaped Profiles: Hypotheses 8 and 9 . 86 The Presence and Effect of Comorbidity . 91 S u m