INTRODUCTION: Problematic Internet use has become a growing problem worldwide; several factors, including personality, play an essential role in understanding this disorder. The Big Five personality traits and their association with problematic Internet use were examined in a large and diverse population.
METHODS: A survey was applied to a total of 1,109 adults of working age. Each answered the Big Five Inventory and the Internet Addiction Test.
RESULTS: Problematic Internet use was found in 10.6% of them (n=112). The personality traits extraversion and openness to experience were significantly associated with those with the disorder. With adjustment models, a positive association was found between these traits and being single and higher education.
CONCLUSIONS: This study represents the largest of its kind in the Spanish-speaking population, highlighting the importance of recognising the factors involved in problematic Internet use.