Abstract
The exptl. literature on the mating behavior of animals is reviewed. The author''s interpretation of the physiol. basis of sexual excitement in the [male] posits that it is due to 2 independent variables: their innate threshold for sexual arousal and the value of the stimulus-object in eliciting sexual excitement. "The appearance of copulatory reactions is thus seen as a joint function of the [male]''s responsiveness and the incentive''s excitatory value." While in sub-primate vertebrates the motor patterns of copulation appear to be innately determined, experience and learning play an increasingly important role in the sex-activity of monkeys and higher primates, including man. The [male] is capable of exhibiting the mating pattern of the [female] of his species as well as of displaying the [male] copulatory reactions. Feminine behavior in the [male] can be increased either by administering estrogen ([female] hormones) or by raising the an-drogen ([male] hormone) level high and, at the same time, preventing the masculine copulatory reaction. 111 references are included.