Fig. 4.
(A–D) Group trajectories (predicted vs. actual withdrawal thresholds) and residual plots. The solid lines represent the model predicted withdrawal thresholds, whereas the dotted lines plot the actual group mean withdrawal threshold by time point for (A) the postpartum-with-pups group; (B) the postpartum-separated-from-pups group; (C) the virgin females group; and (D) the males group. (E–H) The dots represent the residual variance by day resulting from the model with a reference line for zero residual variance for (E) the postpartum-with-pups group; (F) the postpartum-separated-from-pups group; (G) the virgin females group; and (H) the males group.