This study compared Mainland Chinese, Chinese American and European American mothers' self-reported emotional expression within the family. Mothers of 3-year-old European American (n = 40), Chinese American (n = 39) and Mainland Chinese (n = 36) children (n = 20 girls per group) completed the Self-Expressiveness in the Family Questionnaire (SEFQ), a measure that includes 40 items describing the expression of positive and negative emotion (20 items each). Respondents indicate how frequently they engage in each expressive practice. Mothers also completed a questionnaire regarding family ecology variables. European American mothers reported significantly more positive emotional expression than Mainland Chinese mothers, although no significant differences were found for expression of negative emotion. While family ecology differed across groups, these variables were not related to the emotional expression scores. No child-gender differences were obtained. Results of this study confirm the presence of cultural differences in mothers' emotional expressivity. (Contains 2 tables.)