摘要：Abstract The purpose of the present study is to investigate the amount of internet usage and its effective factors among high school students of Khafr County (Fars Province) in the educational year of 2009-2010. The population of this descriptive survey research included all the male and female students of Khafr County. The sample of this study included 340 students of which 153 were males and 187 were females. To describe, categorize, and summarize the data, descriptive statistics that included simple frequency distribution tables were used and to investigate the hypotheses and theoretical model testing of the study, referential statistics of Kendall tau correlation coefficient was used. The results showed that the students used internet in so many cases and that there is significant relationship between internet dependence and educational downfall, leisure time, communicating with others, tendency to aggression, social isolation, and life satisfaction.
