Mazur 3.

From: Gooding Hilary (
Date: Wed May 20 1998 - 16:51:36 BST


This section begins by explaining how the Y chromosome influences the
development of testes. The testes produce T which in turn determines
the amount of masculinity that will occur:

> The general rule, somewhat simplified, is that early exposure to
> greater amounts of T will produce more male characteristics
> (masculinization) and fewer female characteristics (defeminization),
> while less exposure to T will produce the reverse. Perinatal
> manipulation of animal subjects, and developmental abnormalities among
> humans, show convincingly that even genetic females will show male
> forms if dosed early enough with T, and genetic males will show female
> forms if deprived of the hormone (Naftolin 1981; Wilson et al. 1981;
> Breedlove 1992).

Studies on rhesus monkeys have shown that administering T to pregnant
females results in the female children engaging in more rough-
and-tumble play than would normally be expected and that is more
characteristic of male monkeys.

> Comparable attempts were made to relate T to aggressiveness within the
> nondelinquent sample of high school boys.(Olweus et al. 1980, 1988).

But little evidence for T having a role to play in aggression was
found here also

The researchers proposed the use of a longitudinal design to study
ambiguities between studies.

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