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Using a method similar to that of Brigham, Maass, Snyder, and Spaudling (1982), 86 adult convenience store clerks were asked to identify 3 confederate/customers, one Anglo-American, one black-American, and one Mexican-American who had visited their stores 2 hours earlier. Wilcoxon matched pairs signed-rank test showed that clerks were superior at identifying customers of their own racial or ethnic group, Z= 2.84, p < .002. For clerks who made an identification, the correlation between the recognition accuracy and confidence in their identification was not significant, rpbis (56)= .05. The results of this field study paralleled those found in most laboratory experiments of cross-racial/ethnic identification and demonstrated that Mexican-Americans are subject to the own/other groups identification accuracy phenomenon as well.