This study evaluated the effectiveness of group cognitive-behavioral treatment (CBT) and group interpersonal psychotherapy (IPT) for binge eating. Fifty-six women with nonpurging bulimia were randomly assigned to 1 of 3 groups: CBT, IPT, or a wait-list control (WL). Treatment was administered in small groups that met for 16 weekly sessions. At posttreatment, both group CBT and group IPT treatment conditions showed significant improvement in reducing binge eating, whereas the WL condition did not. Binge eating remained significantly below baseline levels for both treatment conditions at 6-month and 1-year follow-ups. These data support the central role of both eating behavior and interpersonal factors in the understanding and treatment of bulimia.

This study tested the initial effects of cognitive-behavioral therapy for binge eating in Ss who do not purge. Forty-four female binge eaters were randomized to either cognitive-behavioral treatment (CB) or a waiting-list (WL) control. Treatment was administered in small groups that met for 10 weekly sessions. At posttreatment a significant difference was found, with 79% of CB Ss reporting abstinence from binge eating and a 94% decrease in binge eating compared with a nonsignificant reduction (9%) in binge eating and zero abstinence rate in WL Ss. Following the posttest assessment, WL Ss were treated and evidenced an 85% reduction in binge episodes and a 73% abstinence rate. Binge eating significantly increased at 10-week follow-up for initially treated Ss; however, the frequency remained significantly improved compared with baseline levels.

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Self‐report and interview data were obtained from 81 obese patients to evaluate the distribution of binge eating, defined by DSM‐III criteria for bulimia, across a range of adiposity. Binge eating was found to be significantly more prevalent as the degree of obesity increased.

The Personality Disorders Examination (PDE) was administered to 71 bulimia nervosa patients at baseline assessment in a study comparing the effectiveness of cognitive‐behavioral treatment with desipramine or the combination of both treatments. Personality disorder sub‐scales were combined into single DSM‐III‐R cluster scores. A high cluster B score (consisting of antisocial, borderline, histrionic, and narcissistic features) significantly predicted poor outcome at 16 weeks and was a better predictor of outcome than borderline personality characteristics alone or any other DSM‐III‐R. cluster score or combination of cluster scores. In contrast pretreatment depression level, self‐esteem, degree of dietary restraint, frequency of purging, and history of anorexia nervosa were not significantly related to outcome. At 1‐year follow‐up there was still a trend toward high cluster B scores predicting poor treatment outcome. Cluster B score was not significantly correlated with percentage of sessions attended nor did subjects with higher cluster B scores have a better outcome with either specific treatment. These results suggest that further investigation of alternative treatments is warranted with high cluster B individuals to determine if treatment effectiveness can be improved. © 1993 by John Wiley & Sons, Inc.