The cost of offering Triple P throughout a community would be recovered in a single year if it brought about a (modest) 10 percent reduction in cases of child abuse and neglect. Foster, E.M., Prinz, R.J., Sanders, M.R., & Shapiro, C.J. (2008). The costs of a public health infrastructure for delivering parenting and family support. Children and Youth Services Review, 30, 493-501.