Science Daily reports on research into the psychological effects of the pitch of people’s voices. It’s fairly well known that people find men’s voices more attractive, prestigious, and trustworthy when they’re pitched deeper. But Penn State found the same effect holds true for women who speak in a deeper register:
“Vocal communication is one of the most important human characteristics, and pitch is the most perceptually noticeable aspect of voice,” said David Puts, study co-author and professor of anthropology at Penn State. “Understanding how voice pitch influences social perceptions can help us understand social relationships more broadly, how we attain social status, how we evaluate others on social status and how we choose mates.”
To study how voice pitch influences social perceptions, the researchers selected two male and two female voice recordings all repeating the same sentence. They edited the clips to produce the average pitch for the speaker’s sex plus a higher-pitched and lower-pitched version of each voice, for a total of 12 clips, and divided the clips into male-male and female-female pairings. The researchers then asked more than 3,100 participants across 22 countries, representing five continents and New Zealand, to listen to the paired recordings and answer questions about which voice sounded more attractive, flirtatious, formidable and prestigious.
The researchers found that women and men preferred lower-pitched voices when asked which voice they would prefer for a long-term relationship such as marriage. They also found that a lower male voice pitch made the individual sound more formidable, especially among younger men, and more prestigious, particularly among older men. Perceptions of formidability and prestige had a larger impact in societies with more relational mobility — where group members interact more often with strangers — and more violence.
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You can read more, uh, deeply into the research here, in Psychological Science.