Table 1.

General experimental conditions and timeline for each experiment. Note: animals in the 2-CS PCA task with pretreatments were randomly assigned to the CS-only and conditioned reinforcement follow-up tests; there were no differences in sign- or goal-tracking behavior upon completion of acquisition between groups for each acquisition treatment (i.e., saline, SCH-23390, and eticlopride).

Experiment	Pre- training	Design
D1 vs D2 receptor function on acquisition	Magazine Shaping
D1 vs D2 receptor function on relative valuation	Magazine Shaping
Role of nucleus accumbens DA	Magazine Shaping