In a scientific experiment, women judged men's upper body strength by listening to recordings of their voices. There was no correlation (200 male subjects from three countries) between men's upper body strength and the timbre or pitch of their voices. The women made the evaluations nearly as snap judgments, without thought.
Such ability to intuit men's upper body strength from voice must be genetically hardwired in women. The ability probably evolved in lower primates and was passed along, perhaps enhanced, up the evolutionary tree to humans. It provides evidence of the ability of genetics to encode environmental stimulus. By analogy, to encode values.
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