“…Previous uncontrolled studies of this program in universal prevention initiatives have found significant changes in participants' knowledge and attitudes regarding the parenting practices addressed in each PDFY session (Catalano, Kosterman, Haggerty, Hawkins, & Spoth, in press;Hawkins, Catalano, & Kent, 1991). Other recent analyses have demonstrated positive effects of PDFY participation on parents' selfreported behaviors, and on global assessments (combining self-report and observational measures) of general parenting improvement (Kosterman, Hawkins, Haggerty, Spoth, & Redmond, 1996;Spoth, Redmond, Haggerty, & Ward, 1995). The present analysis extends these findings by providing an experimental assessment of intervention-specific PDFY effects on actual parental behavior observed in videotaped family interactions.…”