Many methods for reducing implicit prejudice have been identified, but little is known about their relative effectiveness. We held a research contest to experimentally compare interventions for reducing the expression of implicit racial prejudice. Teams submitted seventeen interventions that were tested an average of 3.70 times each in four studies (total N = 17,021), with rules for revising interventions between studies. Eight of seventeen interventions were effective at reducing implicit preferences for Whites compared to Blacks, particularly ones that provided experience with counterstereotypical exemplars, used evaluative conditioning methods, and provided strategies to override biases. The other nine interventions were ineffective, particularly ones that engaged participants with others' perspectives, asked participants to consider egalitarian values, or induced a positive emotion. The most potent interventions were ones that invoked high self-involvement or linked Black people with positivity and White people with negativity. No intervention consistently reduced explicit racial preferences. Furthermore, intervention effectiveness only weakly extended to implicit preferences for Asians and Hispanics. Abstract = 160 words Keywords = attitudes, racial prejudice, implicit social cognition, malleability, Implicit Association Test September 9, 2016 update: We updated this manuscript to fix several minor reporting errors that we have learned about since the publication of the manuscript in August 2014. For a summary of these updates, please see pages 67 and 68.
Authors' note:This project was supported by a gift from Project Implicit. Lai and Hawkins are consultants and Nosek is an officer of Project Implicit, Inc., a non-profit organization that includes in its mission "To develop and deliver methods for investigating and applying phenomena of implicit social cognition, including especially phenomena of implicit bias based on age, race, gender or other factors. Thoughts and feelings outside of conscious awareness shape social perception, judgment and action (Bargh, 1999;Devine, 1989;Greenwald & Banaji, 1995). Nowhere has this idea been more explored than in studies of racial prejudice in which people report egalitarian racial attitudes, but also implicitly prefer Whites compared to Blacks (Devine, 1989;Dovidio, Kawakami, Johnson, Johnson, & Howard, 1997;Fazio, Jackson, Dunton, & Williams, 1995;. These studies have been influential because implicit racial preferences predict behaviors such as negative interracial contact (McConnell & Leibold, 2001), biases in medical decision-making (Green et al., 2007), and hiring discrimination (Rooth, 2010).From the hundreds of studies conducted, we can conclude that implicit preferences (1) are related to, but distinct from, explicit preferences (Greenwald & Banaji, 1995;, (2) are constructed through different mechanisms than explicit preferences (De Houwer, Teige-Mocigemba, Spruyt, & Moors, 2009;Ranganath & Nosek, 2008;Ratliff & Nosek, 2011;Rydell & McConnell, 2006), ...