The Effect of Violent and Nonviolent Video Games on Heart Rate Variability, Sleep, and Emotions in Adolescents With Different Violent Gaming Habits
2013 (English)In: Psychosomatic Medicine, ISSN 0033-3174, E-ISSN 1534-7796, Vol. 75, no 4, 390-396 p.Article in journal (Refereed) Published
To study cardiac, sleep-related, and emotional reactions to playing violent (VG) versus nonviolent video games (NVG) in adolescents with different gaming habits. Methods: Thirty boys (aged 13-16 years, standard deviation=0.9), half of them low-exposed (<= 1 h/d) and half high-exposed (>= 3 h/d) to violent games, played a VG/NVG for 2 hours during two different evenings in their homes. Heart rate (HR) and HR variability were registered from before start until next morning. A questionnaire about emotional reactions was administered after gaming sessions and a sleep diary on the following mornings. Results: During sleep, there were significant interaction effects between group and gaming condition for HR (means [standard errors] for low-exposed: NVG 63.8 [2.2] and VG 67.7 [2.4]; for high-exposed: NVG 65.5 [1.9] and VG 62.7 [1.9]; F(1,28)=9.22, p=.005). There was also a significant interaction for sleep quality (low-exposed: NVG 4.3 [0.2] and VG 3.7 [0.3]); high-exposed: NVG 4.4 [0.2] and VG 4.4 [0.2]; F(1,28)=3.51, p=.036, one sided), and sadness after playing (low-exposed: NVG 1.0 [0.0] and VG 1.4 [0.2]; high-exposed: NVG 1.2 [0.1] and VG 1.1 [0.1]; (F(1,27)=6.29, p=.009, one sided). Conclusions: Different combinations of the extent of (low versus high) previous VG and experimental exposure to a VG or an NVG are associated with different reaction patterns-physiologically, emotionally, and sleep related. Desensitizing effects or selection bias stand out as possible explanations.
Place, publisher, year, edition, pages
Lippincott Williams & Wilkins, 2013. Vol. 75, no 4, 390-396 p.
children, heart rate variability, emotion, sleep quality, violent video game, desensitization
IdentifiersURN: urn:nbn:se:uu:diva-219886DOI: 10.1097/PSY.0b013e3182906a4cISI: 000330467700008OAI: oai:DiVA.org:uu-219886DiVA: diva2:703656