TITLE:
Effects of Video Game Playing on the Circadian Typology and Mental Health of Young Czech and Japanese Children
AUTHORS:
Milada Krejci, Kai Wada, Miyo Nakade, Hitomi Takeuchi, Teruki Noji, Tetsuo Harada
KEYWORDS:
Chronotype, Video Game Playing, Circadian Typology, Mental Health
JOURNAL NAME:
Psychology,
Vol.2 No.7,
October
11,
2011
ABSTRACT: The objective of this study is to examine the effects of video game playing on sleep-wake cycles and mental health of young Czech and Japan children. A cross-sectional survey with 497 Czech children (240 girls, 257 boys; mean age of 4.60 years; 49? - 51?N) and 599 Japanese children (314 girls, 285 boys: 3.79 years; 33?N) from 20 kindergartens and nursery schools. 20% and 30% of Czech and Japanese children had their own video game devices. Young children who played video games every day had later sleep and wake times (P