Besta tíðni boðbera með manneskjunni sem þú elskar.ElskuTwitterFacebookPocketCopy09.10.2021Addictive Features of Social Media/Messenger Platforms and Freemium Games against the Background of Psychological and Economic TheoriesFrequency and Quality of Social Networking Among Young Adults: Associations With Depressive Symptoms, Rumination, and Corumination