Women view a man with a deep voice as less likely to be suitable as a long-term mate, according to a 2013 study. After listening to recordings of men with deep voices, the women participants were most likely to respond that the owners of the voices would be more likely to cheat if in long-term relationships. Researchers believe that this could be because men with deeper voices might have more of the male hormone testosterone. From an evolutionary standpoint, this is often perceived as being more attractive to other women and thus might be seen as giving the men more opportunities to be unfaithful in their relationships.
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