jeffjarvis, 
"Currently, experimental studies should not be used to support the conclusion that social media use is associated with mental health. Taken at surface value, mean effect sizes are no different from zero. Put very directly, this undermines causal claims by some scholars (e.g., Haidt, 2020; Twenge, 2020) that reductions in social media time would improve adolescent mental health."
https://psycnet.apa.org/doiLanding?doi=10.1037%2Fppm0000541&fbclid=IwZXh0bgNhZW0CMTEAAR3Ch-cqTNvnfwapzrAdcHGj2meBqLbHSGdMc66sLbv6CYMdGkq_2dw3Q98_aem_AY0tiQJzF0AeV2IPb4Kcks-_a71cW4dbIopaIizTugQI_PXFNrN7PLll0zEbf8UT6-KnPGHgJ0WKRb-sm8OpgAn1
