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Publisher: Public Library of Science
Journal: PLoS ONE
Languages: English
Types: Article
Subjects: Psychological and Psychosocial Issues, Research Article, Biology and Life Sciences, Diagnostic Medicine, Computer and Information Sciences, Information Technology, Substance-Related Disorders, Behavioral and Social Aspects of Health, Medicine, Health Care Policy, Mental Health and Psychiatry, Q, R, Psychology, Social Psychology, Public and Occupational Health, Social Sciences, Science, Medicine and Health Sciences, Substance Abuse, Health Care
OBJECTIVE: The aim of this study was to develop a self-administered scale based on the special features of smartphone. The reliability and validity of the Smartphone Addiction Inventory (SPAI) was demonstrated. METHODS: A total of 283 participants were recruited from Dec. 2012 to Jul. 2013 to complete a set of questionnaires, including a 26-item SPAI modified from the Chinese Internet Addiction Scale and phantom vibration and ringing syndrome questionnaire. There were 260 males and 23 females, with ages 22.9 ± 2.0 years. Exploratory factor analysis, internal-consistency test, test-retest, and correlation analysis were conducted to verify the reliability and validity of the SPAI. Correlations between each subscale and phantom vibration and ringing were also explored. RESULTS: Exploratory factor analysis yielded four factors: compulsive behavior, functional impairment, withdrawal and tolerance. Test-retest reliabilities (intraclass correlations  = 0.74-0.91) and internal consistency (Cronbach's α = 0.94) were all satisfactory. The four subscales had moderate to high correlations (0.56-0.78), but had no or very low correlation to phantom vibration/ringing syndrome. CONCLUSION: This study provides evidence that the SPAI is a valid and reliable, self-administered screening tool to investigate smartphone addiction. Phantom vibration and ringing might be independent entities of smartphone addiction.

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