Peter Blanken graduated as a social psychologist (MSc) and received his PhD at the medical faculty of the University of Amsterdam. Since 2002 he is a senior researcher at the Parnassia Addiction Research Center of Brijder Addiction Treatment (PARC; The Hague, NL), conducting studies of treatment needs of and new pharmacotherapeutic treatment options for people with crack-cocaine use disorder in the Netherlands” and the effectiveness of financial incentives to improve medication adherence in patients with a psychotic disorder and comorbid substance abuse”. Currently he is involved in evaluations of treatment processes, the development of the Dutch “Multidisciplinary Guideline for treatment of patients with substance use disorder, including cannabis, cocaine, (meth)amphetamines, ecstasy, GHB, and benzodiazepines” and in a 4-year cohort study into young people’s addiction trajectories and profiles.