This study was to identify the effects of the predictive factors ofInternet addiction and to develop a predictive model that explains Internet addiction among adolescents in Korea.

Data was collected from 664 adolescents in Puasan and Ulsan. Data analysis was done using the SPSS 10.0 Win Program for descriptive and correlational statistics and the LISREL 8.53 Win Program for Covariance structural analysis.

The fit of the hypothetical model to the data was moderate, it was modified by deleting four paths. Compared to the hypothetical model, the revised one had a better fit to the data(χ²/df=6.50, GFI=.99, AGFI=.90, RMR=.02, NNFI=.88, NFI=.98, CN=279). Gender, friend support, and loneliness had significant direct effects on Internet addiction. The direct and indirect effect of self-esteem on Internet addiction was significant.The indirect effect of family support on Internet addiction was significant but its direct effect was insignificant. The direct and indirect effects of stress and impulsiveness on Internet addiction were significant but their total effects were insignificant.

Finally, to decrease loneliness, and to increase family support and self-esteem, an effective intervention program and education should be developed to prevent Internet addiction of adolescents.

The purpose of this research was to explore the cyber world immersion experience of adolescents.

Multiple strategies for data collecting were used: an in depth face-to-face interview; analysis of adolescent` writings; and analysis of examples of phenomenon in the realistic world. The sample group consisted of 10 adolescents.

Although the experience was different for all adolescent interviewed, the essential themes of experience emerged: “fill up”, “homoeologous feeling”, “the older generation has a conflicting negative opinion”, “change in social character”, “become habitually skeptic”, “have bad health”, “mean of superiority and getting everything solved”, “ease of access”, “monetary benefit”, “addiction to the computer”, “forget real life solved stress”, “do harm to society”, “take comfort”, or “new job”.

Accordingly this paper suggests that contact with various software is necessary in adolescents, and good quality contents function to prepare and activate adolescents to apply the internet for good use.