His research on implicit bias, motivation to control prejudice, and racial profiling reside at the nexus of psychological science and policing. In particular, he investigates the unconscious operation of stereotypes and prejudice using computerized reaction time methods, and is investigating the implications of such subtle forms of bias in law enforcement and he is interested in racial profiling, especially as it relates to the psychology of stereotyping, and the self-fulfilling effects of such stereotype-based discrimination.