A teenage girl on social media

Why is your teen addicted to social media? (Monkey Business Images/Shutterstock)

In a nutshell

  • Time spent on social media alone does not predict problematic use in teens. Psychological factors like low real-life social support, high social comparison, and frequent platform engagement are stronger indicators.
  • Researchers identified three distinct user groups: healthy users, highly engaged users, and the most vulnerable, with different outcomes despite sometimes similar screen time.
  • Problematic social media patterns in teens tend to be stable over time, suggesting early identification and support are crucial for preventing long-term issues.

PALERMO, Italy — Screen time isn’t the villain. New international research suggests parents have been fighting the wrong battle entirely. After following over 400 teenagers for seven months, scientists found that the amount of time kids spend on social media doesn’t determine who develops problematic use patterns. Instead, three specific psychological factors separate the teens who can scroll safely from those who can’t stop.

Published in PLOS One, this study tracked Italian adolescents aged 13 to 18 and found something that should change how every parent, educator, and policymaker thinks about teenage social media use. The researchers had teens report actual data from their phones’ tracking systems, eliminating the guesswork that has plagued previous studies.

Screen Time Doesn’t Tell the Whole Story

The researchers identified 403 participants and followed them across four different time points. Using statistical analysis, they found that teens naturally clustered into three distinct patterns of social media use, each with very different outcomes despite sometimes similar usage hours.

The largest group, 58% of participants, showed low levels of social media addiction despite regular use. These teens could put their phones down, weren’t anxious when separated from social media, and their online habits didn’t interfere with school or relationships.

Teen covering face with phone
Low social support and a tendency to compare yourself to others may be associated with problematic social media use, per study of 403 Italian adolescents. (Credit: cyndidyoder83, Pixabay, CC0 https://creativecommons.org/publicdomain/zero/1.0/)

A smaller “engaged group” at 16% spent enormous amounts of time on Instagram, at around six hours daily, but showed only moderate signs of addiction. Despite their heavy usage, they maintained control over their digital lives.

The last group represented 26% of the sample. These adolescents spent about five hours daily on TikTok and three hours on Instagram, but their usage patterns were different. These were the teens who couldn’t stop checking their phones, who felt anxious when separated from social media, and whose online habits were disrupting their real-world lives.

3 Predictors of Problematic Use

So what separated the vulnerable group from their peers? The study measured various psychological and social factors at the beginning and found three key predictors that had nothing to do with time limits.

Perceived social support in real life was an important factor. Teens who felt they had people to turn to when upset, who felt cared for by family and friends, were significantly less likely to develop problematic patterns. Those lacking this support were more likely to fall into the vulnerable category.

Social comparison tendencies were also a major risk factor. The study measured how often teens compared themselves to others—their appearance, popularity, and social skills. Those with higher comparison tendencies were more likely to develop problematic social media use.

The last predictor was what researchers called “social media use intensity.” This wasn’t just about time spent scrolling, but about how frequently teens engaged across multiple platforms. This includes visiting social network sites, liking content, replying to messages, and sending communications throughout the day.

Gender also played a significant role, with girls more likely to fall into the vulnerable category than boys.

Stable Patterns Over Time

These patterns remained stable over the seven-month period. Teens who showed problematic use at the beginning were still struggling months later, while healthy users continued their balanced approach.

Problematic social media use may not just be a phase teens outgrow. Instead, this research shows that these patterns can persist without intervention, making early identification and support crucial.

The research also revealed interesting platform differences. While the vulnerable group spent more time on TikTok, the engaged group was heavily focused on Instagram. This suggests different platforms may appeal to different needs or usage patterns.

A girl worried on her cellphone with other teens looking at her in the background
Problematic social media usage patterns can have a negative impact on mental health. (SpeedKingz/Shutterstock)

Limiting screen time or blocking certain apps might not do the trick. Screen time alone doesn’t explain problematic social media use. Teens in the engaged group spent more time on Instagram than those in the vulnerable group, yet showed better outcomes.

How teens use social media, why they use it, and what support they have offline may matter more than how long they spend online. Parents may want to consider whether their teenager has strong offline relationships, how they talk about themselves compared to others, and whether their online habits seem to enhance or replace real-world connections.

Understanding Teen Digital Lives

Social media isn’t going anywhere, and younger generations are growing up as digital natives. Protecting teens from social media’s potential harms isn’t about building higher walls around technology; it’s about understanding the psychological and social factors that make some teens more vulnerable than others.

Focusing solely on screen time misses the mark. The teens who thrive online are often those with strong offline support systems and healthy self-comparison habits. Building these foundations may be more effective than simply limiting access to the technology itself.

Paper Summary

Methodology

Researchers conducted a four-wave longitudinal study tracking 403 Italian adolescents aged 13-18 years (average age 15.73, 51.9% female) over seven months from September 2022 to April 2023. Participants were recruited from high schools in Palermo and Naples using convenience sampling. The study used parallel latent class growth analysis (LCGA) to identify different trajectory groups based on social media addiction scores, time spent on Instagram, and time spent on TikTok. Participants reported objective usage data from their iOS or Android devices and completed validated questionnaires measuring social media addiction, psychological factors, and demographic information at multiple time points.

Results

The analysis identified three distinct groups: a “healthy user group” (58.31%) with low social media addiction and moderate platform usage; a “most vulnerable group” (25.56%) showing high social media addiction scores and spending approximately 5 hours daily on TikTok and 3 hours on Instagram; and an “engaged group” (16.13%) with moderate addiction levels but very high Instagram usage (around 6 hours daily). Key predictors of belonging to the vulnerable group included being female, having lower perceived social support, higher social comparison tendencies, and greater social media use intensity across platforms.

Limitations

The study had several notable limitations including a relatively small sample size that prevented analysis of a four-class solution, short intervals between measurement waves (1-4 months), reliance on self-reported data despite using device tracking, and potential long-term effects from COVID-19 pandemic social media patterns. The researchers also noted concerns about the theoretical validity of the Bergen Social Media Addiction Scale used to measure problematic use, and the lack of experimental design prevented establishing causal relationships.

Funding and Disclosures

The authors received no specific funding for this work and declared no competing interests. The study was conducted according to Declaration of Helsinki guidelines and approved by the University of Palermo Ethics Committee (Nr. 86/2022–26 May 2022). Data is available through the Open Science Framework repository for replication purposes.

Publication Information

This study, “Social support and social comparison tendencies predict trajectories of adolescents’ problematic social media use: A longitudinal study,” was published in PLOS One on June 18, 2025. It is authored by Laura Salerno, Lucia Fortunato, Vivian Ostwald, Arianna Muscolino, and Gianluca Lo Coco from the University of Palermo, Italy, and Ruhr-University Bochum, Germany.

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