This study aimed to compare the function of family, personality traits and affection styles between normal people and those with internet addiction. It was conducted in 2016 in a population sample comprising of all high school students of ImamKhomeini High School in the city of Salmas, West Azerbaijan. 351 of the students were selected as the sample volume. Participants completed four forms which consisted of “assessing family function (FAD)”, “measuring personality characteristics (NEO)”, “assessing attachment styles” as well as “Young’s internet Addiction Questionnaire”. All the statistical methods used including “descriptive indicators”, t - test, mutli - directional variance and data were analyzed using SPSS - 16 software application. The results showed that there is a significant relationship between internet addiction, on one hand, and family functions, personality characteristics and attachment styles, on the other hand.
