[Show abstract][Hide abstract] ABSTRACT: This study investigated the associations between the intensity of mobile phone use and health-related lifestyle. For 275 university students, we evaluated health-related lifestyle using the Health Practice Index (HPI; Hagihara & Morimoto, 1991; Kusaka, Kondou, & Morimoto, 1992) and analyzed responses to a questionnaire (MPDQ; Toda, Monden, Kubo, & Morimoto, 2004) designed, with a self-rating scale, to gauge mobile phone dependence. For males, there was a significant relationship between smoking habits and mobile phone dependence. We also found that male respondents with low HPI scores were significantly higher for mobile phone dependence. These findings suggest that, particularly for males, the intensity of mobile phone use may be related to healthy lifestyle.
Social Behavior and Personality An International Journal 12/2005; 34(10):1277-1284. · 0.31 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: To assess the reliability and validity of a cellular phone dependence questionnaire (CPDQ) we designed.
The CPDQ, a 20-item self-rated scale, was given to 168 healthy female university students (mean age, 21.7 years). Each question uses a 0 to 3 response scale; a higher score indicates greater dependence. The reliability and validity of the CPDQ were assessed by an internal consistency estimate and a factor analysis, respectively. Question scores were then summed to provide a cellular phone dependence score ranging from 0 to 60.
The reliability coefficient (Cronbach's alpha) for the CPDQ was 0.86. In addition, six significant factors were extracted by factor analysis for the 20 items of the CPDQ. The cellular phone dependence score showed a normal distribution (Kolmogorov-Smirnov's test), and the average (+/- SD) was 33.2 +/- 8.7.
These findings suggest that the CPDQ is a useful scale for rating cellular phone dependence.
Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene) 12/2004; 59(4):383-6.