Background Children today are exposed to various media devices, and their usage of these
is increasing. Prior studies have outlined forms of harm this can potentially cause. However,
there has been little empirical research on the use of media devices among preschool
children in Asia. The aim of this study was to examine and analyze longitudinal trends in
media device use among Korean preschool children, focusing on the frequency of
engagement, time spent with, and ownership of media devices, delineated by sex. Methods …

Background: Children today are exposed to various media devices, and their usage of these
is increasing. Prior studies have outlined forms of harm this can potentially cause. However,
there has been little empirical research on the use of media devices among preschool
children in Asia. The aim of this study was to examine and analyze longitudinal trends in
media device use among Korean preschool children, focusing on the frequency of
engagement, time spent with, and ownership of media devices, delineated by sex. Methods …