highly significantp < 0.001
Consistent with the raw data, there was a highly significant main effect of rearing condition [F (1,31) = 25.731, p < 0.001] and drug treatment [F (2,30) = 9.795, p < 0.001] but no interaction between the two [F (1,31) = 0.844, p = 0.365] on the D2 discrimination ratio.