Smartphone use during school hours and association with cognitive control in youths ages 11 to 18
About The Study: This cross-sectional study found that youths use smartphones approximately one-third of the school day; this use was associated with reduced cognitive control. These findings highlight the need for school-level policies and digital literacy programs that address not only overall screen time but also habitual smartphone-checking behaviors that fragment attention.
Corresponding Author: To contact the corresponding author, Eva H. Telzer, PhD, email ehtelzer@unc.edu.
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(doi:10.1001/jamanetworkopen.2026.1092)
Editor’s ...