Adolescence is a unique physical, social and cognitive transitional period from childhood to adulthood that involves developmental alterations on multiple levels. Adolescence constitutes a window of heightened vulnerability to psychiatric disorders, such as threat and anxiety-related disorders. Previous research has shown that adolescents show deficits in learning about threats and safety relative to both children and adults. However, our understanding of these developmental variations in threat regulation is still limited. In order to further understand the differences in threat regulation, this study will focus on core-aspects of development: brain development and social sensitivity.