1. Department of Clinical Psychology, Vrije Universiteit Amsterdam, Amsterdam (Kuzminskaite, Huibers); Department of Psychiatry, Amsterdam University Medical Center, Amsterdam (Kuzminskaite); Department of Clinical Psychological Science, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands (Lemmens, van Bronswijk, Peeters); Department of Psychology, University of Pennsylvania, Philadelphia (Huibers).