https://www.sciencedaily.com/releases/2020/05/200506104414.htm

The studies were originally intended to test for gender bias, that is, if people thought a robot believed to be female may be less competent at some jobs than a robot believed to be male and vice versa. The studies' titles even included the words "gender," "stereotypes," and "preference," but researchers at the Georgia Institute of Technology discovered no significant sexism against the machines.

"This did surprise us. There was only a very slight difference in a couple of jobs but not significant. There was, for example, a small preference for a male robot over a female robot as a package deliverer," said Ayanna Howard, the principal investigator in both studies. Howard is a professor in and the chair of Georgia Tech's School of Interactive Computing.