Some voices sound better than others, but a study published Tuesday suggests the relationships between vocal qualities and the perception of listeners are gender dependent. For the study, scientists at the University of California, Irvine and the University of Utah recorded 42 individuals reading sentences. ... "From a sexual selection standpoint, males with traits that are slightly more masculine than average are typically preferred, which in this context would make males with less clear speech more attractive," said [Daniel] Stehr, a graduate student and researcher at the Visual Perception and Neuroimaging Lab at UC Irvine.

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