Results from study 1. For the GAM curves, y-axis values are the residual mean subjective craving/button presses where the liking scores are partialed out. 95% confidence intervals are shown in gray. (A) GAM curve for Subjective Craving by Time. Study 1 found a significant nonlinear relationship between time and subjective craving (F = 4.21, edf = 2.65, P = 0.005). (B) GAM curve for Instrumental Behavior by Time. Study 1 found a significant nonlinear relationship between time and instrumental behavior (F = 4.74, edf = 3.72, P < 0.001). (C) The relationship between button presses and self-report of craving. Study 1 found a significant relationship between button presses and self-report of craving (P < 0.001).
