Now read about what happens to unborn baby boys as soon as they get there first testosterone bath in the womb. Their body temperature raises to about 108° which cooks that corpus callosum, inhibiting cross hemisphere communication. Early studies of the difference of the hemispheres was done by men and they recognize that women had something in their thought processes that men didn't, so they assumed women functioned out of the right side of their brains (creative, artsy, emotional) and men functioned out of the left side of their brains (order, logic, more stoic). The truth is, the men doing the studying just focused on the difference. When women got into the science they realized that they functioned in both sides of their brains while men were stuck pretty much on one side. The science of the testosterone bath came next.