Many major social media companies have claimed that their social feed algorithms were designed to promote relational well-being and enhance social connection. This project tested part of these claims by investigating if algorithmic personalization predicted social connectedness on TikTok, where connecting with identity-relevant media content is prioritized over interpersonal interaction. Drawing from the algorithm responsiveness process, we identified perceived algorithm responsiveness (PAR) and perceived algorithm insensitivity (PAI) as perceptual mechanisms of how algorithmic personalization relates to social connectedness. In two preregistered studies, an online survey and a 2-week daily diary survey, results suggested that the TikTok For You algorithm curating frequent and positively valenced identity-relevant content was associated with higher PAR and less PAI. In turn, higher levels of PAR predicted more social connectedness, but PAI did not. These findings highlight the sociotechnical dynamics of algorithms, suggesting human–algorithm interaction predicted social connectedness not only an algorithm’s code.

Social relational theory proposes that children and parents socialize each other, particularly when knowledge, beliefs, and identities diverge. For families with lesbian, gay, bisexual, transgender, queer (LGBTQ) teens, identity-relevant media depictions may spark moments of mutual socialization, including attempts to mediate each other’s viewing and discussions of the teen’s identity. U.S. data from 200 LGBTQ teens (aged 13–18) and one of their parents indicated that 83% of dyads reported that media content had elicited identity-related conversations. Both teens and parents perceived teens to mediate more often than parents, though latent profile analyses suggested distinct dyadic profiles. Although all teens were out to their parent, those with more identity certainty engaged in and received more frequent mediation. For parents, the frequency and positivity of “media moments” were associated with greater support for their teen’s identity. For teens, positivity (but not frequency) of such moments was associated with perceptions of more parental support for their identity.

The current study draws from family systems theory to investigate the relationships between parents’ Internet practices, adolescent age (as a proxy for child development), and adolescents’ perceptions of parent-adolescent relationship quality. Secondary data analysis of 4,592 U.S. parent-adolescent dyads from a nationally representative cross-sectional survey revealed that when parents reported having more problematic Internet use, adolescents (ages 12–17) reported having worse relationships with their parents. Stricter rules regarding Internet usage were associated with lower parent-adolescent relationship quality. This negative relationship was more pronounced for adolescents 14.55 years old and older. Unexpectedly, having stricter rules about Internet content was related to better parent-adolescent relationship quality; this association was weaker for older adolescents. The findings provide insight into the differences between restrictive Internet mediation practices about time and content, the importance of examining parents’ problematic Internet use, and the need for considering children’s development when examining the role of media in the family system.