Cognitive Development
Screen Time and Executive Function in Toddlerhood
A Longitudinal Study
Frontiers · 2020-10-22
Summary
This study examines the effects of screen time on executive function (EF) in toddlers, focusing on skills such as inhibitory control, working memory, and cognitive flexibility.

Key Findings
Negative Effects of Excessive Screen Time:
Toddlers with >3 hours/day of screen time scored significantly lower on EF assessments.
Interactive Media Mitigates Negative Impact:
Interactive apps requiring problem-solving helped preserve EF compared to passive media.
Importance of Screen-Free Play:
Screen-free activities consistently yielded the highest EF scores.
The chart compares EF scores for toddlers with varying screen time levels and media types.
Participants: 240 toddlers aged 18 months to 3 years.
Methodology: EF tasks and parental reports on daily screen habits.
Implications: Limiting screen time and prioritizing interactive media and screen-free play can support the development of executive function in toddlers.
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