Rui & Akira(2008) reported that adolescents with
phone dependency were more likely to be engaged in emotional/behavioral
problems such as delinquency, aggressive
behaviors, internalizing/externalizing problems, school adjustment
or peer relations. Also, Koo & Park(2010) surveyed
700 middle and high school students to investigate
the effects of the mobile phone addiction on the violence
and concluded that mobile phone addiction was highly related
to the tendency of behavioral/verbal aggression.