The eating disorders, as defined by DSM-IV, can be conceptualized as having three latent features. Taxometric tests found empirical support for conceptualizing bulimia nervosa and binge eating disorder as discrete syndromes.

The variables that comprise these etiological models should be considered in the development of prevention programs for obese binge eaters. Longitudinal studies, however, are needed to examine these etiological paths and to test for causal relationships.

Research testing the predictions of cognitive-behavioral theory related to the psychopathology of eating disorders has lagged behind treatment outcome research. Central to cognitive theories of eating disorders is the hypothesis that beliefs and expectancies pertaining to body size and to eating are biased in favor of selectively processing information related to fatness/thinness, dieting, and control of food intake or body weight. In recent years, controlled investigations of the predictions of cognitive theories of eating disorders have yielded empirical support for these theories. This paper reviews research which has tested the predictions of cognitive-behavioral theory and discusses the implications of these findings for the treatment of eating disorders. Understanding of information processing biases may assist the clinician in understanding a range of psychopathological features of anorexia and bulimia nervosa, including denial, resistance to treatment, and misinterpretation of therapeutic interventions.

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