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What studies have actually found about short-video feeds. Every record names its source, its study design and its limitations, and keeps the source’s finding apart from our reading of it.

Studies on attention

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  1. Association between short-form video media use and inattentive, hyperactive-impulsive, and oppositional defiant symptoms in Thai preschool children

    Anuroj, K.; Aroonkamonsri, V.
    BMC Public Health

    This study looked at Thai preschool children aged 3–5 and whether short-form video use was linked with caregiver-rated behaviour symptoms. Children used screens for a mean of 3.0 hours per day, including 1.6 hours of short-form video. Higher short-form video use was associated with more inattentive, hyperactive-impulsive, and oppositional defiant symptoms. Because the study was cross-sectional, it cannot show whether short-form video use caused these symptoms.

    Design
    Cross-sectional
    Year
    2026
    Where
    Thailand
    Topics
    Attention, Digital behaviour, Youth wellbeing
    Limitations recorded

  2. Association of Short-Form Video Use With Attention Control and Sleep Quality Among Medical Students: A Cross-Sectional Study

    Mohammed, B. A.; Allampally, S.; Sadanandam, P. et al.
    Cureus

    This cross-sectional study looked at short-form video use among 342 medical students. Students who opened short-form video apps more often had lower attention control, while students who spent longer watching had poorer sleep quality. Because the study was cross-sectional, it shows associations, not causation.

    Design
    Cross-sectional
    Year
    2026
    Topics
    Attention, Digital behaviour, Sleep
    Limitations recorded

  3. Attentional impulsivity, short-form video use and adolescents’ school misbehaviors: mediating role of parental media mediation

    Li, L.; Jia, C. X.
    Humanities and Social Sciences Communications

    This cross-sectional study looked at short-form video use, attentional impulsivity, and school misbehavior in 839 Chinese adolescents. Attentional impulsivity was positively associated with short-form video use, and both were positively related to school misbehavior. Active parental media mediation was reported to mediate the relationship between attentional impulsivity and school misbehavior.

    Design
    Cross-sectional
    Year
    2026
    Where
    China
    Topics
    Attention, Digital behaviour, Education
    Limitations recorded

  4. Attention fragmentation and emotional distress: a mixed-methods study of social media use among Indian adults aged 18-45 years

    Bayaskar, S.; Sharma, D.
    BMC Psychology, 14, 1080

    This survey of 582 Indian adults found that people who spent more time on social media were more likely to have scattered, broken attention. People with scattered attention also reported more anxiety and low mood. Many described jumping between Reels and WhatsApp as leaving their mind cluttered. The study shows a link, not that social media causes these problems.

    Design
    Cross-sectional
    Year
    2026
    Where
    India
    Topics
    Attention, Digital behaviour, Mental wellbeing
    Limitations recorded

  5. Feeds, feelings, and focus: A systematic review and meta-analysis examining the cognitive and mental health correlates of short-form video use

    Nguyen, L.; Walters, J.; Paul, S. et al.
    Psychological Bulletin, 151(9), 1125–1146

    This study combined the results of 71 earlier studies with nearly 100,000 people. Across them, people who watched more short videos tended to have weaker attention and self-control, and somewhat more stress and anxiety. It found no link with body image or self-esteem. These are links seen across studies; they do not prove that short videos cause the problems.

    Design
    Meta-analysis
    Year
    2025
    Where
    Multiple countries
    Topics
    Attention, Digital behaviour, Mental wellbeing, Youth wellbeing
    Limitations recorded

  6. Reels to Remembrance: Attention Partially Mediates the Relationship Between Short-Form Video Addiction and Memory Function Among Youth

    Al-Leimon, O.; Pan, W.; Jaber, A.-R. et al.
    Healthcare (Basel), 13(3), 252

    In a survey of over 1,000 university students in Jordan, half showed moderate to high signs of short-video addiction. Students with higher addiction scores reported more memory problems, partly through weaker attention, and tended to have lower grades. The study cannot tell which came first.

    Design
    Cross-sectional
    Year
    2025
    Where
    Jordan
    Topics
    Attention, Digital behaviour, Education, Youth wellbeing
    Limitations recorded

  7. Short‐Form Video Media Use Is Associated With Greater Inattentive Symptoms in Thai School‐Age Children: Insights From a Cross‐Sectional Survey

    Chiencharoenthanakij, R.; Yothamart, K.; Chantathamma, N. et al.
    Brain and Behavior

    This survey in Thailand looked at whether short-form video use was linked with inattentive behaviour in children aged 6-12. Higher short-form video use was associated with higher inattentive behaviours, and this association was stronger in younger children. It did not find significant associations with hyperactive-impulsive or oppositional-defiant behaviours.

    Design
    Cross-sectional
    Year
    2025
    Where
    Thailand
    Topics
    Attention, Digital behaviour, Youth wellbeing
    Limitations recorded

  8. Swiping more, thinking less: Using TikTok hinders analytic thinking

    Jiang, Q.; Ma, L.
    Cyberpsychology: Journal of Psychosocial Research on Cyberspace, 18(3)

    In two small experiments with Chinese university students, people who spent 20 to 30 minutes swiping through TikTok did slightly worse right afterwards on a short test of careful thinking than people who read or did not swipe. The act of swiping, not what the videos showed, seemed to make the difference. The effect was short-term.

    Design
    Randomised experiment
    Year
    2024
    Where
    China
    Topics
    Addictive design, Attention
    Limitations recorded

  9. Short-Form Videos Degrade Our Capacity to Retain Intentions: Effect of Context Switching On Prospective Memory

    Chiossi, F.; Haliburton, L.; Ou, C. et al.
    Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems (ACM), pp. 1–15

    In a small lab study in Germany, 60 young adults were interrupted for 10 minutes during a task. Those who scrolled TikTok during the break became much worse at remembering to do something they had planned. Those who used Twitter, watched one YouTube video or rested did not. The authors think the quick switching between short videos is the reason, but the study is small and early.

    Design
    Controlled experiment
    Year
    2023
    Where
    Germany
    Topics
    Addictive design, Attention
    Limitations recorded

A study is published here only after its source is identified and verified, its design classified, its finding checked against the original, and its limitations recorded. How we judge evidence