Psychiatry Investig.
2019 Feb;16(2):115-120. 10.30773/pi.2018.12.25.2.
Smartphone Addiction in Japanese College Students: Usefulness of the Japanese Version of the Smartphone Addiction Scale as a Screening Tool for a New Form of Internet Addiction
- Affiliations
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- 1Tokiwa Child Development Center, Tokiwa Hospital, Sapporo, Japan. tatema@sapmed.ac.jp
- 2Department of Neuropsychiatry, Sapporo Medical University, School of Medicine, Sapporo, Japan.
- 3Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
- 4Mental Health and Neurosciences Division, VA Portland Health Care System, Portland, USA.
- 5Department of Psychiatry, School of Medicine, Oregon Health & Science University, Portland, USA.
- 6Centre for Child and Adolescent Mental Health and Child Protection Faculty of Medicine, Trondheim, Norway.
- 7Department of Psychiatry, Child and Adolescent Psychiatry Division, University of Hawai’i John A. Burns School of Medicine, Honolulu, USA.
- 8Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
- KMID: 2440622
- DOI: http://doi.org/10.30773/pi.2018.12.25.2
Abstract
OBJECTIVE
Smartphone use is pervasive among youth in Japan, as with many other countries, and is associated with spending time online and on social media anywhere at any time. This study aimed to test a Japanese version of the Smartphone Addiction Scale-Short Version (SAS-SV) among Japanese college students.
METHODS
The subjects of this study were 602 college students in Japan. The study questionnaire consisted of questions about demographics (age, gender etc.), possession of a smartphone, internet use [length of internet use on weekdays and weekend, favorite social networking service (SNS) etc.], Young's Internet Addiction Test (IAT), and the Smartphone Addiction Scale-Short Version (SAS-SV) translated into Japanese.
RESULTS
There was a total of 573 respondents (180 male, 393 female) who completed the questionnaire (mean 19.3±1.3 years). LINE was the most popular social media platform (52.0%) followed by Twitter (36.3%). The overall Internet Addiction Test (IAT) score was 45.3±13.2, with 4.5% classified as having severe addiction (IAT ≥70). The mean SAS-SV scores were 24.4±10.0 for males and 26.8±9.9 for females. Based on proposed cutoff scores, 22.8% of males and 28.0% of females screened positive for smartphone addiction. The total scores of the SAS-SV and the IAT was correlated significantly.
CONCLUSION
As the number of smartphone users becomes higher, problems related to smartphone use also become more serious. Our results suggest that the Japanese version of SAS-SV may assist in early detection of problematic use of smartphones.
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