Social media apps are being increasingly used by primary school children and this has influenced how they connect and communicate with others. Child use of social media has raised societal concerns about its impact on early development. To gain a deeper understanding of children's experiences with social media, children in grade 5 (N = 28; girls:…

Growth mixture models (GMMs; B. O. Muthen & Muthen, 2000; B. O. Muthen & Shedden, 1999) are a combination of latent curve models (LCMs) and finite mixture models to examine the existence of latent classes that follow distinct developmental patterns. GMMs are often fit with linear, latent basis, multiphase, or polynomial change models…