Figure 2.
Line graphs showing (A) average latencies to initiate search and (B) average latencies to locate the goal across the four trials (T1-T4) of Day 1 (acquisition), the four trials of Day 2 (retention), and single trial of Day 7 (retention) testing for females (FEM, white circles), gonadally intact control (CTRL, black circles), gonadectomized (GDX, black squares), and gonadectomized male rats supplemented with testosterone propionate (GDX-TP (gray triangles) or estradiol (GDX-E, gray squares). Error bars represent standard errors of the mean. For all but the GDX group, latencies measured on Day 1 were similar and decreased systematically across trials. In the GDX rats, latencies were significantly longer than those of the other groups, with these differences being most marked on Trials 3 and 4. During Day 2 and Day 7 testing latencies were consistent and short across all trials in all groups. For latencies to initiate search, measures of effect sizes were η2 = 0.13-0.36 for Trials 1-4 of Day 1; η2 = 0.18-0.25 for Trials 1-4 of Day 2; and η2 = 0.46 on Day 7. For latencies to locate the goal, η2 = 0.20-0.28 for Trials 1-4 of Day 1; η2 = 0.09-0.17 for Trials 1-4 of Day 2; and η2 = 0.05 on Day 7.