Fun in a Box? Loneliness and Adolescents' Problematic Smartphone Use: A Moderated Mediation Analysis of the Underlying Mechanisms.

Addictive smartphone use is one of the most concerning behaviors among adolescents. The present study investigated the indirect effects of self-esteem and boredom proneness and the moderating role of the need to belong on the link between loneliness and addictive smartphone use (ASU). Our sample included 357 adolescents aged 12 to 19 ( M age = 15.56, SD = 1.01, 57.42% males) from ten public schools in Romania. We used a moderated mediation approach, with moderation of the both second mediation paths and the direct effect path. Results suggested that the influence of loneliness on ASU was statistically significant and partially mediated both by self-esteem and boredom proneness. Adolescents' need to belong significantly moderated the positive association between boredom proneness and ASU, and the direct negative association between loneliness and ASU; however, it did not moderate the negative association between self-esteem and ASU. Thus, high levels of the need to belong also increased the influence of boredom proneness on AUS and had a marginally significant effect on the relation between loneliness and ASU. These results suggested that adolescents' need to belong, self-esteem, and boredom proneness might contribute to developing ASU. Interventions centered around countering the adverse effects of excessive technology use ought to consider group activities that facilitate social bonding to satisfy the participants' need to belong, reduce their levels of boredom, and, thus, reduce the risk of developing ASU symptoms.