4 RESULTS ........................................... 76 Introduction ....................................... 76 Correlations ....................................... 82 Hypotheses Testing .................................. 82 Results of Hypothesis Testing ....................... 87 Summary .......................................... 117 5 DISCUSSION ........................................ 124 Introduction ........................................ 124 Summary of the Study .............................. 124 The Gastric Bypass Group ....................... 126 The Hand Surgery Group ......................... 129 The Hand Rehabilitation Group .................. 132 Conclusions ........................................ 134 Recommendation for Future Research .................. 136 APPENDICES A MILLION BEHAVIORAL HEALTH INVENTORY .................. 139 B LETTER TO SURGEONS .................................. 149 C CONSENT FORM AND MEMORANDUM ......................... 151 D CORRELATIONS BETWEEN THE SCALES OF THE McGILL PAIN QUESTIONNAIRE, THE MYERS-BRIGGS TYPE INDICATORS, AND THE MILLION BEHAVIORAL HEALTH INVENTORY COPYING STYLES SCALES, n=55 ................................ 153 E SELECTION RATIO TYPE TABLES (SRTT) .................. 156 REFERENCES .................................................. 176 BIOGRAPHICAL SKETCH ........................................... 188