Gratitude, as a moral virtue, emphasizes reciprocity and interpersonal relations; its development involves cognitive abilities, moral understandings, and socially learned expectations. This paper aimed to explore ethnic variation in the expression of gratitude among 595 children and adolescents aged 7 to 14 (mean age = 9.71, SD = 2.17) in the United States (European Americans, Brazilians, Hispanics, and African Americans) and the association between gratitude and participants' wishes and age. Results indicated that Brazilians and Hispanics were more likely to use verbal (e.g., "thank you") than concrete gratitude (reciprocation without considering the benefactor's needs) than were African Americans.