This study examines self-esteem as a multidimensional construct in 1 Latino subgroup, Puerto Rican girls and boys during early adolescence, using Harter's (1985b) Self-Perception Profile for Children. The results show that in its English and Spanish versions-the latter developed by the present research team-the Self-Perception Profile for Children has adequate reliability for use with 13- to 14-year-old Puerto Rican youth living on the mainland. Results obtained in this study of Puerto Rican early adolescents, which contrasts with the results from the combined data of "Hispanics" in the American Association of University Women (1991) survey of 3,000 youth, strongly suggests that Latino subgroups need to be studied separately. The mean levels of self-esteem found among Puerto Rican girls and boys were generally similar to those found among Harter's sample of predominantly Anglo middle school students from the suburbs of Denver except that Puerto Rican youth did not show gender differences in overall self-esteem. Gender differences in mean levels of self-esteem in different domains were similar to those of Anglo youth, regardless of the Puerto Rican youth's individual level of psychological or behavioral acculturation. When differences by acculturation emerged, psychological acculturation appeared to play a more protective role for girls (Hispanic- or Latino-oriented girls reported being better behaved and having greater confidence in their scholastic abilities) and behavioral acculturation operated as a risk factor for boys (boys with preference for English reported low Behavioral Conduct and Scholastic Competence scores). On the other hand, greater acculturation (both psychological and behavioral) was associated with girls' lower confidence in their physical attractiveness. Finally, the structure of self-esteem varied by gender, and psychological and behavioral acculturation.