title: Quantitative and qualitative methods for psychotherapy research: introduction to special section.
authors.affiliation: Department of Psychology, University of Trier, D-54286 Trier, Germany. wolfgang.lutz@uni-trier.de
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Lutz
authors.forename: Clara E
authors.initials: CE
authors.lastname: Hill
mesh_terms: D006801:Humans; D011613:Psychotherapy / Q000379:methods*; D012106:Research