> On Tue, 6 Jun 2000, Matthew Raney went:
>
> > Once again, I had a student ask a good question for which I don't have the
> > answer: do men have any type of cyclic fluctuation in testosterone
> > levels?
In addition to the daily cycles, there is a seasonal one. Testosterone is higher
in the fall than the spring. I don't have the details of the magnitude of the
fluctuation, but in Doreen Kimura's new book _Sex and Cognition_ MIT Press,
1999, she discusses the relationship between the seasonal variation and
performance on spatial & verbal tasks.
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John W. Kulig [EMAIL PROTECTED]
Department of Psychology http://oz.plymouth.edu/~kulig
Plymouth State College tel: (603) 535-2468
Plymouth NH USA 03264 fax: (603) 535-2412
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"The only rational way of educating is to be an example - if
one can't help it, a warning example." A. Einstein, 1934.
