The behavioral differences between men and women have been well documented but researchers in Spain have attempted to find physical differences to help explain why men and women often don't see eye to eye.
Watch the documentary via the link below:
Men versus Women: A mans brain is 11% bigger than a woman's on average. | Watch the video - Yahoo! News (http://news.yahoo.com/video/whoknew-men-versus-women-mans-224014012.html;_ylt=Ajac8PQrv2M_ZARNXF3KCmj8X_J_;_ylu=X3oDMTM0a2NjY2M2BG1pdANWaWRlbyBQbGF5IFBhZ2UgUGxheWxpc3QgQmFyBHBrZwMxMzNmY2I0OS1hZGRiLTM2MTctYjhjMC05YmI2NWE0MDVjOTIEcG9zAzkEc2VjA01lZGlhUGxheWxpc3RCYXI-;_ylg=X3oDMTA1bmkzZDc4BHRlc3QD;_ylv=3?pb_list=26b8970e-9767-4d75-b991-7552a5360c45&_sr=1)