The Implicit Association Test: Flawed Science Tricks Americans Into Believing They Are Unconscious Racists Althea Nagai, Phd
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SPECIAL REPORT No. 196 | DECEMBER 12, 2017 The Implicit Association Test: Flawed Science Tricks Americans into Believing They Are Unconscious Racists Althea Nagai, PhD The Implicit Association Test: Flawed Science Tricks Americans into Believing They Are Unconscious Racists Althea Nagai, PhD SR-196 About the Author Althea Nagai, PhD, is Research Fellow at the Center for Equal Opportunity. The author would like to thank the Center for Equal Opportunity for its editorial support and advice throughout the publication process. This paper, in its entirety, can be found at: http://report.heritage.org/sr196 The Heritage Foundation 214 Massachusetts Avenue, NE Washington, DC 20002 (202) 546-4400 | heritage.org Nothing written here is to be construed as necessarily reflecting the views of The Heritage Foundation or as an attempt to aid or hinder the passage of any bill before Congress. SPECIAL REPORT | NO. 196 DECEMBER 12, 2017 The Implicit Association Test: Flawed Science Tricks Americans into Believing They Are Unconscious Racists Althea Nagai, PhD Introduction very low correlations. Perhaps this is to be expected In 1998, University of Washington psychologist from a test measuring differences in milliseconds: Anthony Greenwald and his colleagues developed One-tenth of a second can lead to highly charged a test that purports to uncover unconscious rac- accusations of racism. ism.1 Supposedly tapping into the unconscious, the Next, the difference in milliseconds can be Implicit Association Test (IAT) measures disparities explained by factors other than unconscious bias. in millisecond response times on a computer. Based There are, simply speaking, a wide variety of other on this, Greenwald and others claim that three out explanations. Rather than unconscious racism, the of four Americans suffer from unconscious racism.2 test could measure the test taker’s familiarity with Over the course of the past 20 years, the test has pairings of words and pictures. Scientists who substi- received significant media coverage in theWashing - tuted familiar versus nonsense words in place of white ton Post, New York Times, NPR, CNN, and PBS. By versus black photos or names produced the same 2013, Greenwald and Harvard psychologist Mahza- effect as the race IAT. Some behavioral scientists sug- rin Banaji claimed that the “automatic White prefer- gest the race IAT measures a “figure/ground” effect, ence expressed on the Race IAT is now established where white faces and names are the familiar and fall as signaling discriminatory behavior.”3 into the background, while black faces and names are But there are many scientific critics of this test, more distinctive, thus becoming more prominent. and it is far from settled science. A growing body of Some critics note that the IAT does not distinguish research suggests that the test cannot predict real- between cultural stereotyping, knowledge of these world behavior.4 stereotypes, and prejudice. In a similar vein, the IAT To start, it is not clear that there are significant could measure knowledge of racial disparities, which and reliable differences in response time, as has in turn could generate anger, disapproval, or dis- been asserted. When individuals take the IAT more may—not necessarily endorsement or prejudice. In than once, there is a good chance that results from some test takers, the IAT could tap into a fear of being the first and second (and subsequent) times have called a racist instead of being an unconscious racist. 1 THE IMPLICIT ASSOCIATION TEST: FLAWED SCIENCE TRICKS AMERICANS INTO BELIEVING THEY ARE UNCONSCIOUS RACISTS There are many other factors that bias the test principle of racial equality.9 Yet often, racial dispari- results, including knowing the purpose of the test, ties in outcomes persist in income, education, home faking the test results, repeatedly taking the test, ownership, hiring, promotion, arrests and convic- being in the presence of African Americans, cogni- tions, business ownership and contracting, and tive quickness and flexibility, physical speed, and social mobility generally. This has led some social manual dexterity. scientists, media commentators, and government Other social scientists have raised the seri- officials to argue that there is widespread racism in ous problems related to the low level of predictive our country, but it is unconscious. power associated with the test. The test has not Central to this movement has been an innova- been shown to significantly predict discriminatory tion in psychology that has garnered a great deal behavior. Test results are not closely related to any of publicity recently. Anthony Greenwald and his other measures of discrimination: Correlations are colleagues developed the Implicit Association Test modest at best. Even a meta-analysis by its inventors and designed a series of experiments that purports found this to be the case. to uncover the racism that still exists but in uncon- Not surprisingly, the proportion of false posi- scious form.10 According to Greenwald and Banaji, tives may be substantial. Estimates of false positives 75 percent of Americans who take the IAT are found range from 60 percent to 90 percent. to be unconscious racists.11 This high probability of error has led its original The IAT is an association test based on millisec- proponents to conclude that it should be used with ond reaction time. It measures the speed with which caution: “Taken together, there is substantial risk a subject associates pleasant or unpleasant words for both falsely identifying people as eventual dis- such as “joy,” “crime,” or “work” with categories, for criminators and failing to identify people who will example, “black” or “white,” “male” or “female.” To discriminate.”5 In 2015, Greenwald, Banaji, and start, Greenwald and his colleagues use the IAT to Brian Nosek, a University of Virginia psychologist, assess implicit attitudes toward socially neutral cat- concluded that the IAT “risk[s] undesirably high egories, such as flower versus insect, and pair these rates of false classification.”6 pictures with pleasant versus unpleasant words. The claimed “proof” of unconscious but wide- How the test works: Researchers instruct test spread racism can and will be used to justify any takers to first hit the “positive” key when a flower number of dubious policies. If the Implicit Asso- appears on the computer screen and hit the “nega- ciation Test is used to support claims that decision tive” key with insects, and to hit the “positive” key makers in hiring and university admissions, hous- when pleasant words appear and hit the “negative” ing, bank loans, and government contracting, among key with unpleasant words. others, are unconsciously biased, then proponents Researchers then switch the flowers/insects cat- will argue that this justifies the use of racial prefer- egories and instruct test takers to create “incom- ences—and even goals and quotas—to counterbal- patible” pairings. Subjects are instructed to select ance this purported prejudice. Conversely, where the “positive” key when insects or pleasant words such “affirmative action” is not used, or where there appear but select the “negative” key when flowers or is any sort of racial disparity, these implicit-racism unpleasant words appear. studies can be used to challenge selection deci- The IAT found stronger associations, as measured sions as discriminatory in lawsuits.7 These studies by reaction speed in milliseconds, between combi- could be used as evidence of discrimination by law nations that were compatible versus those that were enforcement8 and to require minority “representa- not. Pictures of flowers (e.g., a rose or tulip) com- tion” of judges and on juries. “Unconscious bias” by bined with pleasant words and pictures of insects teachers could be used to challenge their grading (e.g., a wasp or horsefly) combined with unpleas- and discipline. The possibilities are endless. ant words produced faster reaction times than the incompatible pairing of flowers and unpleasant Background words or insects and pleasant words. Since the 1950s, public opinion on race has From this assessment of socially neutral catego- shown a decline in racial prejudice over time, with a ries, Greenwald and his colleagues moved on to race. momentous shift in white public opinion toward the With this schema, they instructed test takers to hit 2 SPECIAL REPORT | NO. 196 DECEMBER 12, 2017 the “positive” and “negative” keys, creating patterns African American state employees claimed class- of associations as follows: For the “compatible”12 set wide bias in hiring and promotion based on dispa- of pairings, test takers were instructed to pick the rate impact statistics and implicit racial bias. Expert “positive” key when white pictures and pleasant witness testimony on unconscious racism was cen- words appeared, and to hit the “negative” key when tral to their claims. The case became the first site for black pictures and unpleasant words appeared. For dueling experts on the scientific status of implicit the “incompatible” set of pairings, test takers were racism. Anthony Greenwald was the expert witness told to hit the “positive” key when black pictures and for the plaintiffs, and Philip Tetlock, a psychologist pleasant words appeared and to hit the “negative” at the University of Pennsylvania, was the expert for key when white pictures and unpleasant words were the state of Iowa. Ultimately, the judge rejected the flashed on the screen. implicit bias theory and ruled for the State of Iowa.19