The Twenty Statements Test (TST) was administered in Seoul and New York, to 454 students from 2 cultures that emphasize collectivism and individualism, respectively. Responses, coded into 33 categories, were classified as either abstract or specific and as either autonomous or social. These 2 dichotomies were more independent in Seoul than in New York. The New York sample included Asian American whose spontaneous social identities differed. They either never listed ethnicity-nationality on the TST, or listed it once or twice. Unidentified Asian Americans' self-concepts resembled Euro-Americans' self-concepts, and twice identified Asian Americans' self-concepts resembled Koreans' self-concepts, in both abstractness-specificity and autonomy-sociality. Differential acculturation did not account for these results. Implications for social identity, self-categorization, and acculturation theory are discussed.