Shankar Vedantam - Does Your Subconscious Think Obama Is Foreign? - washingtonpost.com: A few years ago, psychologists Mahzarin Banaji and Thierry Devos showed the names of a number of celebrities to a group of volunteers and asked them to classify the well-known personalities as American or non-American. The list included television personality Connie Chung and tennis star Michael Chang, both Asian Americans, as well as British actors Hugh Grant and Elizabeth Hurley. The volunteers had no trouble identifying Chung and Chang as American and Grant and Hurley as foreigners.
The psychologists then asked the group which names they associated with iconic American symbols such as the U.S. flag, the Capitol building and Mount Rushmore, and which ones they associated with generically foreign symbols such as the United Nations building in Geneva, a Ukrainian 100-hryven bill and a map of Luxembourg.
The psychologists found that the participants, who were asked to answer quickly, were dramatically quicker to associate the American symbols with the British actors, and the foreign symbols with the Asian Americans. The results suggest that on a subconscious level people were using ethnicity as a proxy for American identity and equating whites -- even white foreigners -- with things American.