Cumulative body weight gain and average daily caloric intake in rats with different diet conditions.

<p><b>A.</b> Weekly average cumulative body weight gain (mean±SEM) in rats with daily access to a cafeteria diet, intermittent access to a cafeteria diet or daily access to chow-only. Weeks 1–7 correspond to the home-cage access phase and Weeks 8–9 correspond to training phase in which access to home-cage diets remained unchanged. Extinction started on Week 10, from which time the cafeteria items were no longer available. All rats had <i>ad libitum</i> chow from Week 10 to the end of testing. Discrete-cue induced reinstatement test occurred in Week 12; pellet-priming- and intermittent footshock-induced reinstatement tests occurred in Week 14. <b>B.</b> Daily average caloric intake from diet (mean±SEM). *Different between chow-only and daily cafeteria group, p<0.05, n = 8 per group.