New research published in the Journal of Personality and Social Psychology offers proof that there is more within-group variation between men and women than there is between-group variation.
From Science Daily...
"People think about the sexes as distinct categories," says Harry Reis, professor of psychology at the University of Rochester and a co-author on the study to be published in the February issue of the Journal of Personality and Social Psychology. "'Boy or girl?' is the first question parents are asked about their newborn, and sex persists through life as the most pervasive characteristic used to distinguish categories among humans."
But the handy dichotomy often falls apart under statistical scrutiny, says lead author Bobbi Carothers
|Source: Science Daily|
For more information see: "Men are not from Mars," a more thorough summary of the publication "Men and women are from Earth: Examining the latent structure of gender."