“…The focus on distal child welfare outcomes may miss more subtle impacts on families (Berzin, Cohen, Thomas, & Dawson, 2008) and methodological problems may limit the ability to generalize from study results. Studies, by and large, suffered from methodological problems, including small sample sizes (Berzin, 2006;Crow & Marsh, 1998;Pennell & Burford, 2000), outcome evaluations with little or no measurement of program fidelity (Daro et al, 2005;Weigensberg et al, 2009), lack of a comparison group (Crampton & Jackson, 2007;Sieppert et al, 2000), and process evaluations with weak outcome measurement (Crea, Wildfire et al, 2009;Shore et al, 2002) or no outcome measurement (Crampton et al, 2008;Crea, Crampton et al, 2009). These significant limitations pose serious problems in determining the research effectiveness of family involvement approaches, but do point towards how future research could be strengthened.…”