This article assessed the effectiveness of different treatments for bulimia nervosa by screening 400 studies published from 1987 through July 1933. Nineteen independent studies with a total of 1,015 subjects with 11 treatment types, and 316 subjects in 11 control groups fulfilled these criteria. Therapy outcome across studies was assessed meta-analytically, producing effect sizes that represent pretreatment to posttreatment changes in bulimic symptoms.