Four experiments were reported to testthe hypothesis of a relationship between prepubertal climbing behavior and adult sexual behavior. In experiment 1 no sex differences were found in incidence or profiles of climbing patterns. Gonadectomy did not influence the climbing behavior patterns either in the males or the females. Experiment 2 showed the importance of social isolation on the frequency and persistence of climbing activity. The results of experiment 4 did not reveal important differences in climbing behavior patterns between blinded, anosmic and intact animals. The results of experiment 3 showed that the locomotor activity of the incentive female is of major importance for the direction (e. g. the type) of the climbing activity.