Assessments. At intake, GAD-diagnosis and its core symptomatology are identified according to the structured interview section for GAD (DIPS; Margraf, Schneider, & Ehlers, 1994). Furthermore, GAD-criteria are assessed by self-reports. The individual worries are identified using the Penn State Worry Questionnaire (PSWQ) and the Worry Domain Questionnaire (WDQ). Mental disorders on Axis I are assessed using face-to-face diagnostic interviews for Axis I (Diagnostisches Interview für Psychische Störungen für DSM-IV, SCID-I) and for Axis II (Strukturiertes Klinisches Interview für DSM-IV, Achse-II, Persönlichkeitsstörungen, SKID-II; Wittchen, Zaudig, & Fydrich, 1997).