Abstract Background Few studies have looked at how life transitions influence depressed mood from adolescence to adulthood and if parental socioeconomic status (SES) moderates these effects. Study questions Methods We used latent growth modelling analyze in a Norwegian sample (n = 1257) surveyed age 13, 14, 15, 16, 18, 19, 21, 23, 30 40 (1990-2017). The effects of were modelled as time-varying ...