I find this to be quite true.

At least with women over the age of 24. I am def. caveman-esque with all of the damn hair hahaha.

Luckily avoiding the back hair though, so that's good.

the hair is kickin throughout the head region though.

I'm not too sure I buy this completely. For instance, the study would have to account for arranged marriages, in which the females of society did not and some still do not take part in the picking of the male mate. Also, I believe through a large part of history the females had a lesser say and thereby the males picked the females.

So in effect, if these occurrences(and others of the like) were not added in to the study underwent, then I count the study itself to be incorrect.
however there is a chance that I may be completely wrong.