Figure 1.

Learning curves for males (white circles in a,c; n = 31) versus females (black circles in a,c; n = 31); and learner (black circles in b,d; n = 21) versus non-learner lizards (white circles in b,d; n = 41). The dashed line in (b,c) marks the probability of entering into the correct refuge by chance given the experimental set-up. Note that instances in which lizards were already encountered in the ‘safe’ refuge at the time of the simulated attack (see Material and methods) were not considered for the analysis of latencies.