This is addressed in the study[0] on the third page (4429): "The pitch videos showed images related to the ventures, but they did not show the entrepreneurs th

This is addressed in the study[0] on the third page (4429): "The pitch videos showed images related to the ventures, but they did not show the entrepreneurs themselves. Participants heard the entrepreneur’s voice-over narration while they watched each video. This video pitch format allowed us to dub in a male voice and a female voice (randomly assigned), holding the narration script constant. After watching the videos, participants chose which company to fund." [0]: http://www.pnas.org/content/111/12/4427.full.pdf http://www.pnas.org/content/111/12/4427.full.pdf