Associations between social media and crystallized and fluid performance trajectories in early adolescence

Longitudinal evidence on social media use and cognitive abilities trajectory coupling across early adolescence is sparse. In this study, data from the ABCD Study (Baseline N ~ 12,000; M_age = 9.9; White = 52.0%, Hispanic = 20.3%, Black = 15.0%, Asian = 2.1%, Other = 10.5%; Female = 47.8%) were used to examine whether growth processes in social media use and cognitive performances (i.e., crystallized abilities, inhibitory control/attention, and processing speed) were associated over 4 years in early adolescence. Parallel process latent growth curve models revealed that the trajectory of social media use was negatively coupled with crystallized and inhibitory control/attention performance trajectories, indicating potential trade-offs. Conversely, the trajectories of social media and processing speed were positively coupled, possibly due to practice-based transfer.