Laboratory rats are placed on days 1, 3, 5, 7 and 9 in a cage with striped walls after receiving a drug that blocks dopamine receptors followed by an injection of a drug that prevents reuptake of dopamine. On days 2,4, 6, 8 and 10 the rats are individually placed in a cage with polka dot walls after receiving an injection of saline (placebo) followed by an injection of a drug that prevents reuptake of dopamine. On Day 11 the animal is placed in a cage that has striped walls on one side and polka dot walls on the other side. It can move from side to side freely during 15 minutes. The time spent on the striped side and the dotted side are recorded. What do you predict?