Research Design & Number of Studies
The best evidence for children aged 6-12 years old comes from four studies; one internally conducted Randomised Control Trial (RCT) (Gottfredson et al, 2006); two internally conducted quasi experimental studies with pre and post-test design (Kumpfer et al, 2012; Kumpfer et al, 2010); and one externally conducted, single group, pre-test, post-test study (Brook et al, 2016). The RCT included 715 families with children aged 7-11 years. Outcomes observed for the full Strengthening Families Programme (SFP) intervention group in the RCT have been reported. One quasi experimental study included 250 families of children aged 12-16 years (Kumpfer et al, 2012). The study did not report separate data for children aged 12 years. The second quasi experimental study (Kumpfer et al, 2010) included over 1600 families with children aged 3-16 years. Separate data for children in the SFP 6-11 age group have been reported (Kumpfer et al, 2010). The last study included 411 caregivers of children aged between 3 and 11 years (Brook et al, 2016). Separate data for children aged 6-11 was not reported.
Outcomes Achieved
Child Outcomes
- Compared to the control group (who mainly received no treatment or standard treatment), there were significantly improved parent reports of child positive adjustment at post-intervention (pairwise contrasts only) (Gottfredson et al, 2006)
- Significantly increased concentration and social skills at post-test (Brook et al, 2016; Kumpfer et al, 2012; Kumpfer et al, 2010)
- Significantly reduced covert aggression, depression, and overt aggression at post-test (Kumpfer et al, 2012; Kumpfer et al, 2010)
- Significantly reduced criminal behaviour (Brook et al, 2016; Kumpfer et al, 2012); and alcohol and drug use at post-test (Kumpfer et al, 2012)
Parent outcomes at post-test
- Significantly improved parental involvement, parental supervision, parental efficacy, positive parenting (Brook et al, 2016; Kumpfer et al, 2012; Kumpfer et al, 2010) and parenting skills (Kumpfer et al, 2012; Kumpfer et al, 2010)
- Significantly reduced parental alcohol and drug use (Kumpfer et al, 2010); family conflict (Brook et al, 2016; Kumpfer et al, 2012; Kumpfer et al, 2010), and parent depression (Brook et al, 2016)
- Significantly improved family communication, family organisation, and family resilience (Brook et al, 2016; Kumpfer et al, 2012; Kumpfer et al, 2010), as well as increased family cohesion (Kumpfer et al, 2012; Kumpfer et al, 2010)
Key Reference
Brook, J., Akin, B. A., Lloyd, M., Bhattarai, J., & McDonald, T. P. (2016). The use of prospective versus retrospective pretests with child-welfare involved families
Kumpfer, K. L., Xie, J., & O’Driscoll, R. (2012). Effectiveness of a culturally adapted Strengthening Families Program 12–16 years for high-risk Irish families. Child & Youth Care Forum, 41(2), 173-195
Kumpfer, K. L., Whiteside, H. O., Greene, J. A., & Allen, K. C. (2010). Effectiveness outcomes of four age versions of the Strengthening Families Program in statewide field sites. Group Dynamics: Theory, Research, and Practice, 14(3), 211-229
Gottfredson, D., Kumpfer, K. L., Polizzi-Fox, D., Wilson, D., Puryear, V, Beatty, P., & Vilmenay, M. (2006). Strengthening Washington, D.C. Families Project: A randomized effectiveness trial of family-based prevention. Prevention Science, 7(1), 57-74