Age‐related differences in social media use, online social support, and depressive symptoms in adolescents and emerging adults

Despite growing concerns about the impact of social media use on the developing brain and associated mental health impacts, whether susceptibility to the benefits and harms of social media use changes across adolescence and young adulthood has yet to be empirically tested.Using a cross-sectional sample of participants aged 14-22 years (N = 254), we examined (a) linear and non-linear age-related changes in social media use and online social support and (b) age-related differences in the effects of social media use and online social support on depressive symptoms.We found age differences in social media use, but not online social support, such that social media use increased across adolescence and peaked around age 20, followed by stable use into young adulthood. Age moderated the effect of online social support, but not overall social media use, on depressive symptoms, such that online social support was negatively associated with depressive symptoms for adolescents (age < 16.98), but the opposite pattern emerged for young adults (age > 19.04).Results suggest overall developmental changes in social media use and that adolescents may be more susceptible than emerging adults to the beneficial effects of positive online interactions on mental health.