Internet dependency and psychosocial maturity among college students
International Journal of Human-Computer Studies
A comparative study of media cultures among Taiwanese and Japanese youth
Telematics and Informatics
Problematic Internet use or Internet addiction?
Computers in Human Behavior
Unwillingness-to-communicate and college students' motives in SMS mobile messaging
Telematics and Informatics
Net-friends: Adolescents' attitudes and experiences vs. teachers' concerns
Computers in Human Behavior
No mobile, no life: Self-perception and text-message dependency among Japanese high school students
Computers in Human Behavior
When fingers do the talking: a study of text messaging
Interacting with Computers
Phantom vibrations among undergraduates: Prevalence and associated psychological characteristics
Computers in Human Behavior
The Five Factor Model of personality and employees' excessive use of technology
Computers in Human Behavior
Social networking on smartphones: When mobile phones become addictive
Computers in Human Behavior
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Unhealthy use of the Internet and mobile phones is a health issue in Japan. We solicited participation in this questionnaire-based study from the employees of a city office in Kumamoto. A total of 92 men and 54 women filled in the Internet Addiction Questionnaire (IAQ), the Self-perception of Text-message Dependency Scale (STDS), and the Hospital Anxiety and Depression Scale (HADS). The prevalence of ''light Internet addiction'' and ''severe Internet addiction'' were 33.7% and 6.1% for men whereas they were 24.6% and 1.8% for women. The prevalence of ''light mobile phone text-message addiction'' was 3.1% for men and 5.4% for women. There were no cases of ''sever text-message addiction''. We found a two-factor structure for the IAQ and a three-factor structure for the STDS. We also performed an EFA of the IAQ and STDS subscales, and this revealed a two-factor structure - Internet Dependency and Text-message Dependency. An STDS subscale, Relationship Maintenance, showed a moderate factor loading of the factor that reflected unhealthy Internet use. In a path analysis, Depression was associated with both Internet Dependency and Text-message Dependency whereas Anxiety was associated negatively with Text-message Dependency. These results suggest applicability of the IAQ and STDS and that Internet and Text-message Dependences are factorially distinct.