Narrator:        This is Science Today. Chances are a woman can more readily recall what she wore on a first date than a man could. Why? Dr. Louann Brizendine, a psychologist at the University of California, San Francisco and author of ‘The Female Brain', says MRI scanners have found that the aspects of the female brain that know and remember the details of emotional events is actually different than a male's.

Brizendine:     It's the details of some emotional events that you have tattooed on your brain - he may not remember at all. We don't know why necessarily that is, the part we do know is that for millions of years, male and female brains have evolved in slightly different niches.

Narrator:        Brizendine explains that women had to keep themselves and helpless infants safe and alive in sometimes hostile environments by relying on non-verbal cues.

Brizendine:     It's not surprising then the big area of reading emotions in others is something female brains do a little bit faster and they can read more subtle emotions than males. It's not that they can't do it, it's just that they do it faster.

Narrator:        For Science Today, I'm Larissa Branin.