The purpose of this study was to examine the effect of media use(computers, video
games, and smartphones) on the depression/anxiety and aggression of preschool
children. We analyzed the data from the 5th wave of the Korean Children Panel
Study(KCPS), which consisted of data on 1,703 families with 4-year-old children.
The results of this study were as follows. First, the children's age when first using
the computer or playing video games had insignificant impacts on the depression/
anxiety and aggression. However, the children's earlier age when first using the
smartphone was associated with higher levels of depression/anxiety and aggression.
Second, the level of computer usage and playing video games was not related to the
children's depression/anxiety and aggression. However, higher levels of smartphone
use were associated with aggression, and the usage level of smartphones was not
associated with depression/anxiety. Based on the study's findings, the needs for parent
and teacher education to teach desired media use habits; and media misuse prevention
program for preschool children were discussed.