There is no indication for potential devastating effects of social media on school achievement; social media use and school grades are unrelated for adolescents

Are Social Media Ruining Our Lives? A Review of Meta-Analytic Evidence. Markus Appel, Caroline Marker, Timo Gnambs. Review of General Psychology, October 16, 2019. https://doi.org/10.1177/1089268019880891

Abstract: A growing number of studies have examined the psychological corollaries of using social networking sites (SNSs) such as Facebook, Instagram, or Twitter (often called social media). The interdisciplinary research area and conflicting evidence from primary studies complicate the assessment of current scholarly knowledge in this field of high public attention. We review meta-analytic evidence on three hotly debated topics regarding the effects of SNSs: well-being, academic achievement, and narcissism. Meta-analyses from different laboratories draw a rather equivocal picture. They show small associations in the r = .10 range between the intensity of SNS use and loneliness, self-esteem, life satisfaction, or self-reported depression, and somewhat stronger links to a thin body ideal and higher social capital. There is no indication for potential devastating effects of social media on school achievement; social media use and school grades are unrelated for adolescents. The meta-analyses revealed small to moderate associations between narcissism and SNS use. In sum, meta-analytic evidence is not in support of dramatic claims relating social media use to mischief.

Keywords social media, meta-analysis, narcissism, achievement, well-being