Genetic and environmental influences on problematic Internet use: A twin study |
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| Affiliation: | 1. Ankara University, Faculty of Educational Sciences, Department of Computer & Instructional Technologies Education, Ankara, Turkey;2. Recep Tayyip Erdoğan University, Faculty of Education, Department of Computer & Instructional Technologies Education, Rize, Turkey;1. Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, Iowa;2. Institute for Clinical and Translational Science, University of Iowa, Iowa City, Iowa;3. Department of Internal Medicine, Division of Immunology, University of Iowa Hospitals and Clinics, Iowa City, Iowa;4. Department of Emergency Medicine, University of Iowa Hospitals and Clinics, Iowa City, Iowa;1. Department of Emergency Medicine, Mayo Clinic Health System, Mankato, Minn;2. Department of Emergency Medicine, Mayo Clinic, Rochester, Minn;3. Division of Biostatistics and Informatics, Mayo Clinic, Rochester, Minn;1. Department of Cognitive Neurology, University Medicine Goettingen, Robert-Koch-Str. 40, 37075 Goettingen, Germany;2. Department of Neurology, University Medicine Goettingen, Robert-Koch-Str. 40, 37075 Goettingen, Germany;3. German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Goettingen, Germany;4. Department of Psychiatry and Psychotherapy, Charité-University Medicine Berlin, Campus Mitte, Charitéplatz 1, 10117 Berlin, Germany;5. DFG Center for Nanoscale Microscopy & Molecular Physiology of the Brain (CNMPB), Germany;6. Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany;7. Department of Child and Adolescent Psychiatry, University Medicine Goettingen, von-Siebold-Str. 5, 37075 Goettingen, Germany;1. Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China;2. Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence (Fudan University), Ministry of Education, China;3. Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China;4. Department of Child & Adolescent Psychiatry, Shanghai Mental Health Center, Shanghai Jiao Tong University, Shanghai, China;5. Human Phenome Institute, Fudan University, Shanghai, China |
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| Abstract: | Despite many studies on the prevalence and correlates of problematic Internet use (PIU), we know little about its etiological components. Our main aim is to find out to what extent PIU is influenced by genetic and environmental factors using the classic twin design. A total of 237 Turkish twin-pairs aged 10–25 participated in the study. PIU was measured using the ‘Problematic Internet Use Scale’ (PIUS) developed by Ceyhan, Ceyhan and Gürcan. For male twin-pairs, the monozygotic (MZ) twin correlations were larger than the dizygotic (DZ) twin correlations, indicating that genetic factors influenced scores on the PIUS. However, for female twin-pairs, the MZ correlations were smaller than the DZ correlations for the PIUS, showing that genetic factors did not play a role in female twin-pairs. The influence of both genetic and environmental factors was explored with model-fitting analysis. Results showed that both for the “social comfort/benefit” and “negative consequences associated with the Internet use” sub-dimensions, the best-fitting models were the ADE models whereas both for the “excessive use” sub-dimension and “PIUS-Total”, the best-fittings models were the ACE models. The key result of this study is that the genetic and non-shared environmental effects are equally influential on the overall PIU in male twin-pairs. |
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| Keywords: | Problematic Internet use Internet addiction Twin study Behavioral genetics Genetic influence Environmental influence |
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