Fig. 4.

Numbers of visits (means ± SEM) to the chambers in the three-chambered box, regardless of whether it contained a male or female stimulus animal (top), and visits to the chamber that contained the anesthetized male in the social exploration tests. Males (XY⁻Sry and XXSry) paid more visits to the stimulus male than did females (XY⁻ and XX) (p< 0.05). XY males paid more visits to the chambers with the stimulus male or female and also visited the stimulus male more often than did XY⁻Sry males (p < 0.05).