The effect of the binge diet on operant responding and body weight gain.

<p>Panel A and B show mean lever presses (+SEM) (y-axis) per diet group (x-axis) during the first time-out during a time-out paradigm (A) or while working under a progressive ratio schedule of reinforcement (B). Panel C shows the mean suppression ratio (+SEM) (y-axis) of chocolate consumption caused by adulteration with 2mM quinine. Panel D shows the mean increase in body weight in grams (+SEM) (y-axis) during the 8 weeks of the diet. *** Indicates significant difference between the groups (p<0.0001).