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By Daniel S. Et Al [Eds] Lehrman

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Extra info for Advances in the Study of Behavior, Vol. 2

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Despite the recently expressed belief to the contrary (Hampson and Hampson, 1961; Money, 1961), Young et al. ( 1 964) suggested that femininity when it is associated with cryptorchidism of this type is physiologically induced (see also Section IV). As we stated earlier in this section on gonadal hormones and mating behavior in the male guinea pig, an important feature of the 10 preliminary tests was that they provided us with a level of performance against which the effects of castration and of testosterone o r other hormone treatment could be evaluated.

14). Very often a single purring sound is uttered which may last for a second or two. During the early part of a strong estrus, the reaction can be elicited repeatedly by the male, by contact with another animal of either sex, or by stroking the animal on the back or on the posterior lumbar region with one or more fingers. In extreme cases, after the female has been stroked once, it was only necessary to approach her with the hand, and in one case, simply to look over the top of the open cage as though she was about to be stroked.

Some attention has been given to the problem of steroid hormone specificity in the male, but this is largely an unexplored area. Probably for the reason that the determination of androgen requirements in the male is so much more laborious than in the female, in which single injections of estrogen and progesterone are sufficient for a test, the 28 WILLIAM C . YOUNG problem will long remain unstudied. T h e only data with which we are familiar were obtained by Antliff and Young (1956). Following preliminary tests, 30 males were castrated and assigned to groups in such - 60- a3 ?

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