Abstract
Communication through social media characterizes modern lifestyles and relationships, including family interactions. The present study aims at deepening the role that parents' perceptions about social media effects on family systems can exert within their family functioning, specifically referring to the relationship between collective family efficacy and open communications within family systems with adolescents. A questionnaire to detect the openness of family communications, the collective family efficacy and the perceptions about the impacts of social media on family systems was administered to 227 Italian parents who had one or more teenage children, and who use Facebook and WhatsApp to communicate with them. From the results, these perceptions emerge as a mediator in the relationship between the collective family efficacy and the openness of communications, suggesting that it is not only the actual impact of social media on family systems that matters but also parents' perceptions about it and how much they feel able to manage their and their children's social media use without damaging their family relationships. Thus, the need to foster parents' positive perceptions about social media's potential impact on their family relationships emerges. A strategy could be the promotion of knowledge on how to functionally use social media.