Figure 1.
(A) Training protocol: Rats initially learn problem set XY, then in a new pairs of contexts, problem sets AB then CD. (B) While learning XY, trials to criteria in Context 0 was strongly correlated with that in Context 00. (C) Following initial XY learning, rats rapidly acquired AB and CD. (D) Performance across all nine days of training. Rats performed above chance on AB by the fifth trial block on the first day of training (Day 1: AB1). In contrast, rats performed above chance on CD on the second trial block on the first day in which those items were introduced (Day 4: CD1). There were 15 trials per block. Error bars are S.E.M.