Abstract
To what extent does gender expression vary day-to-day? Are daily changes related to psychological adjustment in the same way for all individuals? A person-specific approach was used to answer these questions in a 75-day intensive longitudinal study. Fifty-seven cisgender adults (27 women) provided over 4000 reports of daily masculinity and femininity and of three indices of internalizing problems. Results revealed: (a) substantial daily fluctuations in gender expression, especially in women; (b) sample-level links between daily increases in femininity or reductions in masculinity and heightened anxiety, depression, and self-reproach for men, but no apparent links for women; and (c) person-specific links between gender expression and psychological adjustment, such that some women reported internalizing problems with reduced masculinity (average male pattern) and some men reported problems with heightened masculinity (opposite the average male pattern). Findings highlight how intensive longitudinal research can illuminate the uniqueness of gender-related daily experiences, and their implications for the wellbeing of individuals.