Screen Time at Age 1 Year and Communication and Problem-Solving Developmental Delay at 2 and 4 Years


Whether some domains of child development are specifically associated with screen time and whether the association continues with age remain unknown.


To examine the association between screen time exposure among children aged 1 year and 5 domains of developmental delay (communication, gross motor, fine motor, problem-solving, and personal and social skills) at age 2 and 4 years.

Conclusion and Relevance

In this study, greater screen time for children aged 1 year was associated with developmental delays in communication and problem-solving at ages 2 and 4 years. These findings suggest that domains of developmental delay should be considered separately in future discussions on screen time and child development.


Ippei Takahashi, MMSc; Taku Obara, PhD; Mami Ishikuro, PhD; Keiko Murakami, MPH, PhD; Fumihiko Ueno, PhD; Aoi Noda, PhD; Tomomi Onuma, BS; Genki Shinoda, MMSc; Tomoko Nishimura, PhD; Kenji J. Tsuchiya, MD, PhD; Shinichi Kuriyama, MD, PhD

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