n East Asia countries such as Korea and Japan, the
number of mobile phone users has increased over the
last 10 years(Korea Communications Commission,
2012). More notable is that adolescents are the fastest
growing age population of mobile phone users. Indeed,
the spread of mobile communication among teenagers has
been astonishingly rapid in recent years (Yoo and Kwon
2011). This rapid growth has led to questions and concerns
about the negative impact of mobile phones on users. One
recur-ring concern involves mobile phone dependency, in
which the use of this technology becomes excessive and out
of control to such an extent as to possibly disrupt the lives
of users(Byun and Joe 2011). Because most of the avid and