Compared three groups of black, white, and Mexican‐American delinquent and nondelinquent males, aged 11 to 18, on measures of self‐concept, selfesteem, and ordinal position by groups (N = 135). Data were analyzed with analysis of variance and Chi‐square test. Significant main effects were found with respect to delinquency, self‐concept, and self‐esteem. A significant interaction was present for delinquency and ethnicity for both self‐concept and self‐esteem. Chi‐square results found birth‐order and ethnicity to be related significantly.