The aim of this study (N = 24,012) was to explore sex and age differences in a Taiwanese national sample. We found that women, married, middle-aged, below-averagely and very-highly educated people reported higher happiness. In addition, sex interacted with marital status and education, while age interacted with marital status. Specifically, (1) men were worse off than women when widowed or divorced; (2) women with senior high school education were happier than men, but the trend reversed when they obtained graduate level education; and (3) married people were happier than their single counterparts during the suitable marrying age.

Key words: SWB, sex differences, age differences, marital status, education, Chinese