(a) In the first set of experiments (Fig. 1) there was no significant correlation between platform recency and the time the mice spent in the 10 cm zones surrounding the platforms during the probe test, for either the 1 d delay (Pearson's: r = 0.49, P = 0.18) or 30 d delay (Pearson's: r = 0.16, P = 0.68) groups. Furthermore, these correlations were not different between the 1 d delay and 30 d delay groups (z-test: z = 0.37, P = 0.65). (b) Both groups searched a fair amount in the last platform location, though, which corresponded to the mean of the distribution. (c) In the weighted bimodal distribution experiments (Fig. 2) there was also no significant correlation between platform recency and time spent in platform zone for either the 1 d delay (Pearson's: r = 0.52, P = 0.15) or 30 d delay (Pearson's: r = 0.03, P = 0.93) groups. There was no difference between the groups in this correlation either (z-test: z = 0.55, P = 0.5). However, in these experiments only the 1 d delay groups searched a great deal for the last platform, which was located in a lower probability zone within the distribution (Supplementary Fig. 1b). Data shown is mean ± s.e.m.