Re: Hominid Brain Size: Testosterone, DHEA, and Melatonin

Paul Myers (
Sun, 03 Nov 1996 09:49:45 -0500

In article <>,
(Albert Himoe) wrote:

> In article <55dtiu$>, James Howard
> ( writes:
> Much concerning a theory which relates brain size, DHEA, testosterone
> and human evolution.
> Darwinians, myself included, will have a hard time taking this theory
> seriously. What is selected for directly is not hormone levels or
> brain size, but behavior. Any given behavior is likely to be
> influenced by many biochemical factors, not just a few as implied by
> Mr. Howard's argument.

Agreed -- any theory that tries to reduce a complex, multi-dimensional
process like human evolution to a single, simple causative agent, like
testosterone, isn't a theory -- it's a cartoon.

Paul Myers Department of Biology Temple University Philadelphia, PA 19122