Although evidence from a variety of disciplines suggests that skin tone is a basis of discrimination among Blacks, research in social psychology has virtually ignored this topic. Two experiments examined the causal role of skin tone in the perception and representations of Blacks. Paralleling the effect of race and other social category dimensions, Study 1 showed that variation in skin tone can influence the organization of social information. Study 2 demonstrated differentiation in stereotypes of Blacks based on skin tone. Results from both investigations suggest that skin tone is an important factor in both Blacks’ and Whites’ representations of Blacks.

This article reviews research examining racial phenotypicality bias--within-category stereotypes, prejudice, and discrimination based on race-related phenotypic characteristics of the face. A literature review of research examining skin tone bias, drawing largely from work examining perceptions of Blacks in the United States, reveals that individuals with features typical of members of their racial category are perceived and treated more negatively by social perceivers. Furthermore, this treatment has broad implications for social status and health. Despite this evidence, the tendency to attend to and use within-race variation in phenotypic appearance has been overlooked in social psychological models of impression formation. However, several theoretical frameworks have recently been proposed to explain the role of phenotype-based expectancies in social representation and judgment. Drawing on the strengths of each perspective, a rudimentary model of racial phenotypicality bias is proposed. This analysis suggests that future examinations guided by the current framework (or similar others) can complement existing evidence toward a greater understanding of the role of phenotypic variation in social perception.

An experiment examined the extent to which viewers’ emotional discomfort with a crime story and perceptions and memorability of a perpetrator and victim could be influenced by the race and skin tone of the perpetrator portrayed in a newscast. Participants were exposed either to a White, light–skinned Black, medium–skinned Black, or dark–skinned Black perpetrator. In addition, participants provided self–reports of their news viewing habits. Results revealed that heavy television news viewers were more likely than light viewers to feel emotional discomfort after being exposed to the dark–skinned Black perpetrator. Heavy news viewers also had favorable perceptions of the victim when the perpetrator was Black, regardless of skin tone. Results also indicated that all participants, regardless of prior news exposure, found the perpetrator more memorable when the perpetrator was a dark–skinned Black male. The methodological and theoretical implications of these findings are discussed.

Previous work has shown differential amygdala response to African-American faces by Caucasian individuals. Furthermore, behavioral studies have demonstrated the existence of skin tone bias, the tendency to prefer light skin to dark skin. In the present study, we used functional magnetic resonance imaging (fMRI) to investigate whether skin tone bias moderates differential race-related amygdala activity. Eleven White participants viewed photographs of unfamiliar Black and White faces with varied skin tone (light, dark). Replicating past research, greater amygdala activity was observed for Black faces than White faces. Furthermore, dark-skinned targets elicited more amygdala activity than light-skinned targets. However, these results were qualified by a significant interaction between race and skin tone, such that amygdala activity was observed at equivalent levels for light- and dark-skinned Black targets, but dark-skinned White targets elicited greater amygdala activity than light-skinned White targets.