Implicit Racial Bias as a Function of In-Utero Androgen Exposure

Androgen has been shown to affect functioning of the central nervous system by modulating neural circuitry during in-utero development subsequently affecting parts of the brain implicated in the evaluation of socially relevant stimuli. This can suggest an examination of underlying neurobiological mechanisms that may influence androgen in the brain and likewise human cognition and behavior. Since the index and ring finger ratio is associated with androgen related outcomes, this study sought to identify a relationship between a participant's implicit race association test score and left-handed ring (4D) and index (2D) finger ratio. Specifically, we found that higher androgen exposure in our female subjects equated to a stronger bias for European American faces over African American faces.