10.1371/journal.pone.0077762.t002 Table 2  Early and late errors to criterion in the three test-conditions of Experiment 1 and 2.      Experiment 1. No significant effects of drug or drug × test condition interaction. Significant main effect of test condition on early (F2,61 = 5.37, p<.01) and late errors (F2,61 = 10.22, p<.0001). Animals made more early and late errors in the full reversal condition than the perseverance and learned non-reward conditions (p<.05). Experiment 2. No significant effects of genotype.