April 03, 2004
The study was based on a series of tests conducted on 30 white Dartmouth undergraduate volunteers. They were first administered an Implicit Awareness Test(some online IATs) consisting of associating names(such as Latisha or Greg) with attributes like 'good', 'health', 'ugly'...etc. Scores on this test were used as a baseline indicator of a subject's racial prejudice. Then the subjects conversed for 5 minutes with either a black or white experimenter on topics like college social groups or racial profiling. Immediately afterwards, they completed a Stroop Task. Their performance on this task correlated well with their IAT scores, in terms of showing that those subjects with greater IAT-measured prejudice and who conversed with a black experimenter, perfomed worse on the Stroop task. Two weeks later, in what seemed like an unrelated experiment to the same volunteers, fMRI scans were performed on them while viewing unfamiliar black and white male faces(pdf). The activity in the right dorsolateral prefrontal cortex(critical in working memory, thus cognitive control) was proportional to the IAT scores while viewing a black face. The study, of course, isn't without controversy. Of particular concern is the use of this and related research to devise a screening process for recruits in various fields like police or government.
TorontonianCanadian with a heavy accent. No one in Toronto has ever shown me the slightest hint of discrimination before I speak. Accent is a different issue from race though.