The economic evaluation of psychosocial interventions is a growing area of research. Though time costs are central to the economist's understanding of social costs, these costs generally have been ignored by prevention scientists. This article highlights the need to measure such costs and then reviews the principles economists use in valuing time. It then considers the specific time costs that often arise in interventions designed to reduce behavior problems among children and youth. These include classroom time devoted to program activities, the time of parents or other caregivers, the time of teachers (outside of the classroom), and the time of volunteers. We consider the economic principles that govern how economists value these inputs and then apply these principles to data from an evaluation of a prominent intervention in the field, the Incredible Years Program. We find that the time costs are potentially rather large and consider the implications for public policy of ignoring them.
KeywordsCosts-and Cost-Analysis; Health-Care-Costs; Behavior-Problems; Mental-Health-Services; School-Based-Intervention; Parent-Training Interest in the economic analysis of interventions and services to prevent or treat behavioral health problems among children and youth is growing rapidly (Aos, Lieb, Mayfield, Miller, & Pennucci, 2004;Foster, Dodge, & Jones, 2003). These analyses take various forms, such as cost-effectiveness analyses (Jensen et al., in press) or various forms of benefit-cost analyses, including analyses of the effect of improved services on spending on public services (Foster & Connor, in press-a,in press-b). These different forms of economic analyses all build on a common foundation, an estimate of program or service cost.Much of the information needed for estimating these costs can be found in program budgets 1 , and the methodology for estimating those costs has been developed and refined by health economists (Drummond & Mcguire, 2001;Drummond, O'Brien, Stoddart, & Torrance, 1997;Gold, Russell, Siegel, & Weinstein, 1996;Haddix, Teutsch, & Corso, 2003). (Note that by budgetary costs we mean expenditures actually realized rather than those planned.) One area that remains unresolved, however, involves the value of time that study participants spend in intervention activities and treatment, especially when they are not compensated.Direct all correspondence and send offprints to: School of Public Health, University of North Carolina, Chapel Hill, Rosenau Hall, Campus Box# 7445, Chapel Hill, NC 27599-7445, (919) 370-9472, e-mail: emfoster@unc.edu 1 Especially when those budgets are organized at the start of the study in a way that allows one to attend to key tasks in the costs analyses, such as separating the costs of research from service or intervention delivery. See Foster and Jones (2003).
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Author ManuscriptAm J Community Psychol. Author manuscript; available in PMC 2007 September 1. Participants' time costs can be important in understanding the true costs of an intervention, espe...