But what determines whether this develops into problematic Internet use? Their findings show that while people with problematic Internet use experience higher levels of stress and negative mood, the decisive factor driving them online is temptation. Each evening, they completed questionnaires about their mood, stress levels, temptation to go online, time spent online and the consequences of their Internet use. “Our study shows that the temptation to go online is a crucial link between stress, mood and problematic Internet use. The Research Unit aims to improve understanding of the psychological and neurobiological mechanisms underlying problematic Internet use in order to develop better prevention and treatment strategies.