[Technosoul]

I believe that humans evolved larger head sizes then those found in other primates because of trate in primitive humans to abuse women,.

Because males are stronger they used to drag women off to a cave for mating by their hair, and those cave men types would hit women over the head with clubs. Also such clubs were used for tribal wars (conflicts) as a weapon.

Now we know in fact that if you hit someone the injured part will swell up and get larger. But that is not the whole of this theoretical explaination.

Cracked skulls basically endangered the survival of the human race, because of the violence of primative peoples towards one another. So for protection the body evolved larger skulls in an attempt to insure the survial of the spiecies, especially the the female gender of the pre-human primates. In other words the body attempted to evolve helmet like skulls to protect people during clubing conflicts.