R. Jones et al., CHANGES DURING TREATMENT FOR BULIMIA-NERVOSA - A COMPARISON OF 3 PSYCHOLOGICAL TREATMENTS, Behaviour research and therapy, 31(5), 1993, pp. 479-485
Seventy-five patients with bulimia nervosa were treated with cognitive
behaviour therapy, behaviour therapy or interpersonal psychotherapy.
The changes that occurred during treatment were assessed in a subsampl
e of 38 patients. There was an immediate decrease in the frequency of
binge-eating and purging (self-induced vomiting or laxative misuse). T
his continued for 4 wk in interpersonal psychotherapy and for 8 wk in
the other two treatment conditions. There were no clear differences be
tween the three treatments in the time course of their effects on a gl
obal measure of eating behaviour and attitudes or on measures of depre
ssion and self-esteem. The findings suggest that certain shared 'non-s
pecific' properties of psychological treatments can have a substantial
early effect on the eating behaviour of patients with bulimia nervosa
. Indeed, patients with bulimia nervosa may be particularly likely to
show non-specific treatment effects. Cognitive behaviour therapy and b
ehaviour therapy appear to have an immediate influence on eating behav
iour over and above these non-specific effects. The study gave no clue
s as to the mechanism of action of interpersonal psychotherapy.