http://community.victoriaadvocate.com/home/Blog/Crobar/5405 An atricle in the journal Biology Letters* surveyed a group of hunter-gatherers in Tanzania (to control for items such as birth control).  They found that voice pitch was a good determinant of number of offspring the individual would have - a higher reproductive success. The reason for this is hypothesized that men with deeper voices are seen as more attractive and a marker for being more masculine and possibly having "good genes".  So, those of us who don't have a nice, deep voice may have another hurdle to jump in our quest for a mate.  I guess I should only speak after I wake up in the morning then... * Source - Apicella, C., Feinberg, D. and Marlowe, F. (2007). Voice pitch predicts reproductive success in hunter gatherers. Biology Letters, Preprint, January 2007. doi:10.1098/rsbl.2007.0410. An atricle in the journal Biology Letters* surveyed a group of hunter-gatherers in Tanzania (to control for items such as birth control).  They found that voice pitch was a good determinant of number of offspring the individual would have - a higher reproductive success. The reason for this is hypothesized that men with deeper voices are seen as more attractive and a marker for being more masculine and possibly having "good genes".  So, those of us who don't have a nice, deep voice may have another hurdle to jump in our quest for a mate.  I guess I should only speak after I wake up in the morning then... * Source - Apicella, C., Feinberg, D. and Marlowe, F. (2007). Voice pitch predicts reproductive success in hunter gatherers. Biology Letters, Preprint, January 2007. doi:10.1098/rsbl.2007.0410. en-us