Marieke is an assistant professor in Developmental Psychology at Leiden University. Her main interest lies in studying neurobiological mechanisms of the etiology of psychopathology. In her research, she combines behavioral experimentation, neuroimaging techniques, and hormone assays to seek fundamental insights into why mental health problems often emerge during adolescence. With a solid background in clinical psychology, she is interested in improving mental health care by providing fundamental knowledge on basic mechanisms (i.e., brain development, fear learning, and extinction) that are involved in the etiology and maintenance of internalizing and externalizing problems.