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Scientists have cast new light on why some men have deeper voices than others. It was traditionally thought that males developed athe lower pitched voice to attract members of athe opposite sex. However, anthropologists at athe American college Penn State believe athe deep voice was to scare off other males. Researcher David Puts said: "In humans, and possibly other primates too, athe low pitched voice evolved primarily to intimidate other men…to make males seem bigger and scarier." He added that: "Human male traits imply physical aggression and formidability and seem to provide competitive advantages in fighting or threatening other men more than they help attract women."

athe researchers at Penn State recorded more than 500 men and women speaking. They then played athe recordings back to more than 1,100 different people of both sexes. Male volunteers rated each male recording for levels of dominance they perceived in athe voices. athe same recordings were rated by 15 female volunteers for romantic attractiveness. Men similarly rated athe women's voices for attractiveness. Most of athe men thought athe lower-pitched male recordings belonged to athe more dominant man. Dr Puts said women also liked lower-pitched voices, but athe pattern of athe women's ratings did not lead him to say that athe deepness of the male voice was so important to females.