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Police officers and students exhibit an apparent 鈥渉ierarchy of bias鈥� in making a split-second decision whether to shoot suspects who appear to be wielding a gun or, alternatively, a benign object like a cell phone, research conducted by the 麻豆视频 and San Diego State University has found.

Both the police and student subjects were most likely to shoot at blacks, then Hispanics, then whites and finally, in a case of what might be called a positive bias, Asians, researchers found.

In the first study of its kind, Joshua Correll, Bernadette Park and Charles M. Judd of CU-Boulder鈥檚 Department of Psychology and Neuroscience and Melody Sadler of San Diego State University examined how police and a group of undergraduate subjects decide whether to shoot or not to shoot 鈥渟uspects鈥� in a multi-ethnic environment.

鈥淢ost studies on the subject of stereotyping and prejudice look at two (ethnic) groups, usually in isolation. It鈥檚 always one group against another group,鈥� said Correll, a CU graduate who joined the faculty in August after a stint at the University of Chicago.

鈥淏ut as the country becomes more ethnically diverse, it鈥檚 more and more important to start thinking about how we process racial and ethnic cues in a multicultural environment,鈥� he said.

As with previous studies into the question, data were gathered from subjects playing a 鈥渇irst person shooter鈥� video game, in which figures of varying ethnicity 鈥� Caucasian, Asian, Hispanic and African-American 鈥� pop up, either 鈥渁rmed鈥� with a weapon or another benign object, such as a cell phone.

Participants 鈥� 69 CU-Boulder undergraduates and 254 police officers 鈥� had to make quick decisions as to which figures posed a 鈥渢hreat鈥� and shoot them. The police officers were recruited from two-day training seminars in Florida, New Mexico and Washington and represented numerous jurisdictions from 11 states.

The research demonstrates how persistent cultural stereotypes are, Correll said. Even students who displayed little bias when interviewed demonstrated otherwise when faced with a split-second decision.

鈥淚 may not believe it personally, but I am exposed to stereotypes constantly through media or social networks 鈥� (such as) the idea that young black men are dangerous,鈥� he said. 鈥淭hose associations can have an influence on my behavior even if I don鈥檛 believe them.鈥�

The study found that police were considerably more accurate than students at correctly identifying a genuinely threatening suspect, as opposed to those brandishing a cell phone or wallet, perhaps a reflection of training. But officers were still influenced by the target鈥檚 race 鈥� an influence that may derive from the officers鈥� 鈥渃ontacts, attitudes and stereotypes,鈥� Correll said.

For example, police who endorsed more violent stereotypes about Hispanics and those who overestimated the prevalence of violent crime in their districts demonstrated more bias to shoot Hispanic targets. That raises the question of whether police are responding to real-world threats 鈥� and whether that means some ethnic groups really are more likely to be armed and dangerous than others.

鈥淭hat is a very sensitive question, whether or not (police officers鈥�) reactions are based on some kind of truth. Is this police officers responding to reality on the ground? The short answer is, we don鈥檛 know,鈥� Correll said. 鈥淏ut this research almost demands that we ask that question.鈥�

The researchers鈥� recent findings were published in the Journal of Social Issues. The work was funded by a grant from the Russell Sage Foundation.

In 2007, Correll (then at the University of Chicago), Sadler (then at CU-Boulder), Park and Judd collaborated with the Denver Police Department on a widely cited study that found police officers were less influenced than the general public by racial bias and less likely than the general population to make a decision to shoot at African-American suspects wielding a benign object.

Contact:
Joshua Correll, 303-492-0202
joshua.correll@colorado.edu
Clint Talbott, 303-492-6111