title: Distinguishing specific from nonspecific interventions in comparative outcome studies: reply to Collins and Thompson.
authors.forename: D K
authors.initials: DK
authors.lastname: Snyder
authors.forename: R M
authors.initials: RM
authors.lastname: Wills
authors.forename: S L
authors.initials: SL
authors.lastname: Faitler
mesh_terms: D001521:Behavior Therapy; D005260:Female; D006801:Humans; D008297:Male; D008370:Manuals as Topic; D008388:Marital Therapy / Q000379:methods*; D010043:Outcome and Process Assessment, Health Care; D012107:Research Design / Q000592:standards; D009626:Terminology as Topic