My favorite:
Why Men Don’t Listen to Women (excerpt)
While most of us actually hear female voices more clearly, men’s brains hear women’s voices first as music...
Bottom line: Men have to work harder deciphering what women are saying because they use the auditory part of the brain that processes music, not human voices. Men’s brains are not designed to listen to women’s voices. It’s not the pitch of the woman’s voice, but rather the vibration and number of sound waves that cause the problem, notes Discovery News.
But guys have no trouble at all hearing each other because men use a much simpler brain mechanism at the back of the brain to decipher another man’s voice and recognize it as
speech.
http://webcenters.netscape.compuserve.com/men/package.jsp?floc=DC-topb&name=fte/womenspeak/womenspeak