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1. new why have Cast on men voices light some deeper .


2. members of the opposite sex A lower pitched voice to attract .


3. men pitched primarily other low evolved intimidate A voice to .


4. physical imply traits male Human formidability and aggression .


5. fighting to competitive in Seem provide advantages .


6. 1,100 than more to back recordings the Played people different .


7. levels each of male dominance recording Volunteers for rated .


8. female were volunteers rated The by same 15 recordings .


9. recordings belonged to a more dominant man Lower-pitched male .


10. male voice was so important to females The deepness of the .