Previous research assumed that monoracial categorizations for racially ambigous faces are automatic; anecdotally, multiracial people often complain that they are categorized monoracially even if they identify multiracially. Researchers may be right to assume that faces are categorized monoracially, but racially ambiguous faces can represent people with complex racial identities; it is important to determine if categorizations can go beyond the monoracial judgments examined thus far. The present research targets the following questions: Are biracials categorized differently when information explicitly indicating a biracial background is available? What types of information cause changes in the categorization of biracials? Is there a differential impact of information about the biological/genealogical background versus the cultural/environmental life context of a target? Participants learn about biracial targets by seeing faces paired with background information. Across targets, the background information is varied to contain “biological” (race of parents), “cultural” (racial diversity neighborhood and school), both or neither type of information. Participants perform a speeded categorization task in which they classify (old and new) biracial, Black, and White faces as “White”/”Not White” or “Black”/”Not Black." Participants complete explicit and implicit measures of racial bias to allow examination of the relationship between differences in racial bias and categorization patterns. We expect that for biracial targets, “Not Black” categorizations will be more frequent among those with low versus high implicit bias. We expect that all participants will show slower response latencies to faces presented with information suggesting a biracial background, as typical monoracial categorization patterns will be disrupted. Results are forthcoming.