Women don’t really need to lower their voices to be taken seriously, says University of Kansas study
The study, conducted by University of Kansas School of Business lecturer and research specialist Midam Kim, asked participants to compare short speech samples of 12 current and former CEOs — including Jeff Bezos, Tim Cook, Mary Barra and Ginni Rometty.
The CEOs’ names and companies were not disclosed to the study’s nearly 200 male and female participants, which included individuals from both the U.S. and other countries.
Kim manipulated each CEO’s sample to create low-, middle- and high-pitched versions. Participants listened to all three pitch levels for each CEO and picked the sample that sounded the most “competent” and had the most “integrity,” Kim tells CNBC Make It.
Competence and integrity are both measures of trustworthiness, she notes.
The result: Lower male voices were perceived as more trustworthy, but lower female voices had a much smaller effect on trustworthiness. “For male leaders, the pattern was reconfirmed … but for female leaders, that pattern was much weaker,” Kim says. “People do not care too much about a female CEO having a lower voice.”
The study, which has not yet been published in a journal, challenges a common finding across a plethora of older studies that people consistently perceive lower voices as more capable of leading. The reason that it’s not really true for women, she says, has to do with differing leadership expectations.