Difficulties in the assessment of personality traits and disorders in eating-disordered individuals.

There are compelling reasons to examine personality variables in the eating disorder (ED) field but many impediments to the collection of useful data. In addition to the conceptual and methodological difficulties associated with personality assessment in the general case, the EDs present a number of special problems. These include patients' young age at onset and evaluation, the "state" effects of semi-starvation and chaotic eating, denial and distortion in self-report, the instability of ED subtypes, and the intrusion of eating and weight concerns into a wide range of apparently unrelated domains. Although there is substantial support for the clinical view that personality variables are linked to anorexia nervosa (AN) and bulimia nervosa (BN), the identification of stable traits and Axis II disorders in individual patients should be deferred until after the initial phase of treatment.