The Impact of Social Media Use on Adolescent Mental Health
Bachelor's Thesis · ~68 pages · English
Abstract
This thesis examines the relationship between social media use and mental health outcomes among adolescents aged 13–18, with particular focus on depression, anxiety, and self-esteem. Drawing on longitudinal studies and large-scale survey data, the analysis investigates platform-specific effects, daily screen time thresholds, and gender differences in vulnerability. The research applies social comparison theory and the displacement hypothesis to explain mechanisms through which excessive social media engagement correlates with diminished psychological well-being. Findings indicate that passive consumption presents greater risks than active engagement, and that effects are moderated by pre-existing vulnerabilities and offline social support networks.
1. Introduction
Social media platforms have fundamentally transformed adolescent social life. With over 3.5 billion users globally, platforms such as Instagram, TikTok, and Snapchat now mediate peer relationships, identity formation, and daily experiences for most teenagers in developed countries.
Rising rates of adolescent anxiety, depression, and self-harm since 2012 have coincided with widespread smartphone and social media adoption, prompting urgent academic inquiry into potential causal pathways. This thesis synthesizes available evidence and examines theoretical mechanisms linking social media use to mental health outcomes.
2. Theoretical Framework
Three theoretical frameworks guide the analysis:
Social Comparison Theory (Festinger, 1954) - Adolescents engage in upward social comparisons with peers' curated online presentations, generating feelings of inadequacy and diminished self-worth.
Displacement Hypothesis - Time spent on social media displaces sleep, physical activity, and face-to-face social interaction—all protective factors for mental health.
Social Reinforcement Model - Variable reward schedules inherent in likes and notifications create compulsive usage patterns resembling behavioral addictions.
3. Key Findings and Recommendations
The synthesis of evidence yields several consistent findings:
• Passive scrolling and social comparison activities show stronger negative associations with well-being than active communication uses • Girls demonstrate greater vulnerability to appearance-related comparisons on image-centric platforms • Screen time exceeding three hours daily shows meaningful associations with depressive symptoms • Nighttime social media use disrupts sleep quality, creating secondary mental health effects
Recommendations include platform-level design interventions (removing infinite scroll), school-based digital literacy curricula, and parental co-use strategies.
References
- [1]Twenge, J. M., Joiner, T. E., Rogers, M. L., & Martin, G. N. (2018). Increases in depressive symptoms, suicide-related outcomes, and suicide rates among U.S. adolescents after 2010 and links to increased new media screen time. Clinical Psychological Science, 6(1), 3-17.
- [2]Keles, B., McCrae, N., & Grealish, A. (2020). A systematic review: The influence of social media on depression, anxiety and psychological distress in adolescents. International Journal of Adolescence and Youth, 25(1), 79-93.
- [3]Vannucci, A., Flannery, K. M., & Ohannessian, C. M. (2017). Social media use and anxiety in emerging adults. Journal of Affective Disorders, 207, 163-166.
- [4]Orben, A., & Przybylski, A. K. (2019). The association between adolescent well-being and digital technology use. Nature Human Behaviour, 3(2), 173-182.
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