Listeners judge talker sex more efficiently from male than from female vowels.

@article{Owren2007ListenersJT,
  title={Listeners judge talker sex more efficiently from male than from female vowels.},
  author={Michael J. Owren and Michael Berkowitz and J A Bachorowski},
  journal={Perception & psychophysics},
  year={2007},
  volume={69 6},
  pages={930-41}
}
Speech routinely provides cues as to the sex of the talker, in voiced sounds, these cues mainly reflect dimorphism in vocal anatomy. This dimorphism is not symmetrical, however, since during adolescent development, males specifically diverge from a previously shared trajectory with females. We therefore predicted that listeners would show a corresponding perceptual advantage for male sounds in talker-sex discrimination, a hypothesis tested using very brief, one- to eight-cycle vowel segments… CONTINUE READING