Same true DI in both groups (0.20): one group 'above chance' and the other not 45.6%; Welch's t-test between groups p<0.05 5.1% No memory in either group (true DI 0): one group 'above chance' and the other not 4.7%; Welch's t-test between groups p<0.05 5.0% KO lower (0.25 vs 0.05): one group 'above chance' and the other not 77.1%; Welch's t-test between groups p<0.05 40.4%