Aims of the trial. This trial investigates 3 different types of how to customize a well-introduced CBT-protocol (Zinbarg, Craske, & Barlow, 2006) using dyadic peer tutoring methodology (primings). The participants are randomly assigned to 3 priming conditions: (a) Resource priming (Flückiger, Wüsten et al., 2010; Flückiger & Grosse Holtforth, 2008a); (b) Supportive resource priming and (c) Adherence priming.