This study examined the effect of participant sex and the exposure to vocal sex ratios on participants judgement of non-gender specific morphed faces. Previous research demonstrates that exposure to different levels of sex ratios can lead participants to judge threats, race, risk, and attractiveness differently. Similarly, research indicates that indirect social categorization is capable of influencing participant’s perception of sex. We hypothesized that participants who heard a higher proportion of opposite sex voices would judge the subsequent non-gender specific faces as same sex faces. We created a survey and gathered data from 161 participants through MTurk services. The results indicated no significant effect from the participants sex or exposure to opposite vocal sex ratio. These findings can demonstrate the limitations of opposite vocal sex ratio exposure, but the experiment conducted has room for development.


Neuhoff, John

Second Advisor

Cope, Brian


Psychology; Spanish


Social and Behavioral Sciences

Publication Date


Degree Granted

Bachelor of Arts

Document Type

Senior Independent Study Thesis



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