In a groundbreaking systematic review that spans over three decades, researchers from the University of Turku, Finland, have uncovered striking long-term trends in screen time among children and adolescents, revealing a consistent and dramatic increase, particularly accelerated by the COVID-19 pandemic. This comprehensive study meticulously analyzed 60 peer-reviewed publications published between 1991 and 2022, marking the first effort to comprehensively capture the evolution of digital media consumption for individuals aged 0 to 19 years throughout both pre-pandemic and pandemic periods.
The transformation in screen use is not merely quantitative but also qualitative. Co-lead author Yuko Mori, a Postdoctoral Researcher at the University of Turku’s Research Centre for Child Psychiatry, elaborated that the nature of screen engagement has shifted fundamentally over the years. Whereas television once dominated children’s leisure time, evolving technological landscapes have ushered in a new era characterized by personalized, interactive digital devices. From the mid-2010s onward, the research focus expanded from traditional TV viewing to include smartphones, tablets, and video gaming platforms—all of which offer immersive and socially connected digital experiences.
One of the most paradoxical findings of this review is the sustained decline in television viewing during the pandemic, despite the overall rise in screen time. Mori points out that while youth gravitated towards mobile phones and other handheld devices, the steady decrease in TV consumption underscores a broader shift in how digital content is accessed and personalized. This shift mirrors changes in media ecosystems where on-demand and interactive platforms supersede passive viewing habits.
The COVID-19 pandemic, with its unprecedented public health measures, drastically altered daily routines, forcing millions of children and adolescents into remote learning and virtual socialization. The review highlights that school closures and lockdowns acted as catalysts, significantly intensifying screen dependence. Postdoctoral Researcher Sanju Silwal, a shared lead author, points out that these changes reveal important developmental aspects of adolescence, where digital platforms serve essential social functions—facilitating peer connections and even romantic exploration during a period when physical interactions were heavily restricted.
Data from the included studies demonstrate a clear age gradient—older children and adolescents consistently report greater screen time compared to younger children. This age-related increase likely reflects both cognitive maturity and the escalating importance of digital social networks in adolescent life. The rise in screen exposure cuts across socioeconomic strata but is notably amplified among youth from higher socioeconomic backgrounds. Researchers attribute this to disparities in access to personalized digital devices, highlighting an ongoing digital divide with potential implications for equity in health and education outcomes.
The study’s authors raise significant concerns about the multifaceted impacts of sustained screen exposure. Beyond sheer quantity, the nature of digital content and the environmental context in which it is consumed pose risks to physical health, mental well-being, sleep patterns, and neurodevelopment. Digital ecosystems expose children to phenomena such as cyberbullying, exposure to inappropriate or harmful content, and idealized body images, which may adversely affect self-esteem and social development. These findings underpin an urgent call for nuanced research into the qualitative aspects of digital engagement, not merely total time spent online.
Regulatory and policy responses have begun to emerge in various countries aimed at mitigating these risks, yet the authors stress that successful interventions must be anchored in robust, empirical evidence. Policies that merely prescribe screen time limits without addressing the content, context, and individual needs may fall short. Silwal emphasizes a holistic approach where evidence-based policies integrate seamlessly with educational initiatives and family guidance to foster healthy digital citizenship.
Significantly, most extant research has heretofore focused largely on measuring durations of screen use, neglecting the complexity of varying digital experiences. Mori and Silwal advocate for future investigations that employ multidimensional frameworks analyzing not only temporal exposure but also the nature of digital interactions, content quality, and their differential impacts on developmental trajectories. Such research is essential to disentangle how digital media serves as a resource versus a risk factor in children’s lives.
The authors also underscore the transformative potential of technology for educational innovation, creativity, and social inclusion — balancing the dialogue around digital media as a source of both opportunities and hazards. The pandemic context presents a unique lens through which the interplay of technology, behavior, and health can be studied, offering lessons for future crises where digital reliance may become paramount.
Underpinning the study is a call for coordinated efforts among families, schools, communities, and policymakers. Establishing evidence-informed guidelines requires ongoing surveillance of digital trends, investment in digital literacy, and fostering supportive environments to safeguard the well-being of the younger generation. This systematic review stands as a critical milestone, providing a longitudinal foundation that can guide such initiatives.
Funded by the INVEST Flagship programme of the Research Council of Finland and the European Research Council within the EU Horizon 2020 framework, this review sets a precedent for global discourse on digital media consumption trends and their implications. As the digital landscape evolves, ongoing research commitments will be paramount to ensure that emerging technologies contribute positively to child and adolescent development rather than undermining it.
Researchers Mori and Silwal conclude by emphasizing the dual facets of digital technology—as a domain laden with risks and a realm rich with opportunity. To harness its benefits while mitigating harms, a sophisticated, interdisciplinary research and policy agenda must be pursued, one that respects the complexity of screen time and the diverse contexts within which it unfolds.
Subject of Research: People
Article Title: Long-Term Trends in Screen Time Use Among Children and Adolescents: A Systematic Review Including Pre- and Post-COVID Periods
News Publication Date: 21-Mar-2026
Web References: http://dx.doi.org/10.1177/13591045261432532
References: 60 peer-reviewed studies from 1991 to 2022 analyzed in a systematic review
Keywords: screen time, children, adolescents, COVID-19 pandemic, digital media, smartphone use, video games, television viewing, mental health, digital inequality, systematic review, child development
