Ethnic identification: A signal detection analysis.

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Abstract
Investigated the suggestion of G. Allport and B. Kramer (see record 1946-04204-001) that Ss high in anti-Semitism are more accurate at discriminating Jews from non-Jews than Ss low in anti-Semitism. Whether sensitivity in such a task is a function of anti-Semitism was tested. Ss were 108 non-Jewish undergraduates. Through signal detection theory, indexes of sensitivity and response bias were obtained from receiver-operating characteristic curves in a task requiring the identification of Jews and non-Jews from facial photos. Results show that sensitivity was greater for high-prejudiced Ss. The difference between the 2 groups was quite small. On response bias, high-prejudiced Ss were more confident of their judgments than low-prejudiced Ss, and this result was found with sensitivity held constant. High-prejudiced Ss showed slightly greater sensitivity (p < .05) and were significantly more confident of their judgments (p < .001) than low-prejudiced Ss. The existence of a prejudiced personality type is briefly considered. (17 ref.) (PsycINFO Database Record (c) 2016 APA, all rights reserved)

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