Which DSM-IV criterion specifies the minimum frequency and duration for binge eating and compensatory behaviors in Bulimia Nervosa?

• A. Recurrent episodes of binge eating
• B. The binge eating and inappropriate compensatory behaviors occur, on average, at least twice a week for three months
• C. Self-evaluation is unduly influenced by body shape and weight
• D. The disturbance does not occur exclusively during episodes of anorexia nervosa

Answer: (B)

The main concept tested is the DSM-IV rule that defines Bulimia Nervosa by a specific frequency and duration of binge eating with compensatory behaviors. In DSM-IV, these behaviors must occur, on average, at least twice a week for three months. This threshold makes the pattern persistent enough to be clinically meaningful, separating Bulimia from less frequent or isolated episodes. The other statements describe components of the disorder—recurrent binge eating, the influence of body shape on self-evaluation, and the restriction that symptoms aren’t limited to anorexia nervosa—these are important parts of the diagnosis but do not specify the required frequency and duration.