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Internet users worldwide often experience problems related to their Internet use, and although culture has an important influence over how people communicate, what they value, and therefore how they use the Internet, little cross-cultural research on the subject of problematic Internet use has been carried out. The Internet Addiction Test (IAT), the most common measurement tool for this purpose, has been used in various countries. In this study we compared and analyzed the cross-cultural results found in the most recent research on the IAT factor analysis. We found that in countries with two or more studies, results are often replicated, suggesting that cultural context influences Internet behaviors. We conducted our own IAT factor analysis studies in three countries - Spain, USA, and Colombia - with a total of 1,273 participants. We compared our results with those from previous studies in the same countries and found similar results. The most notable finding was that all the IAT factor analyses, both ours and the previous ones in the same regions, contained a factor related to loss of control/time management problems and another factor related to emotional/psychological problems, thereby suggesting that impulse control problems and unfulfilled emotional needs are the most important components in the development of problematic Internet use in various countries around the world. Future research on problematic Internet use should focus on these aspects.

The aim of the study was to relate the basic dimensions of personality formulated by the model of the big five factors with problematic Internet use in a sample of 411 Colombian youngsters, 18-28 years of age, attending three private universities. Online survey questionnaires were administered for: socio-demographics and Internet usage habits, the Big Five Inventory (John, Donahue and Kentle, 1991), to assess personality, and the Internet Addiction Test (Young, 1998), to determine the degree of use of the Internet (controlled, problematic or addictive). The results revealed that 9.7% of the sample has a problematic Internet use. Among them, the majority were male (x2= 12.93, p= 0.01) and performing communication and leisure activities. The problematic use correlates positively with neuroticism and negatively with friendliness and responsibility. On the other hand, is not related to extraversion and openness to experience. Being female and the responsibility dimension are protective factors from problematic use, while neuroticism predicts it. In conclusion, the study data provides empirical evidence of the relationship between personality and problematic Internet use.