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	Summative Evaluation	Valutazione Controfattuale dell'Impatto (CIE)
Campo	Public Policy	Inferenza causale
Famiglia	Process / pipeline	Regression model
Anno di origine	1967	1970s–2000s
Ideatore	Michael Scriven	Heckman, Imbens, Rubin, and the program evaluation literature
Tipo	Judgement-oriented evaluation function	Causal inference / program evaluation
Fonte seminale	Scriven, M. (1967). The methodology of evaluation. In R. W. Tyler, R. M. Gagné, & M. Scriven (Eds.), Perspectives of Curriculum Evaluation (pp. 39–83). Chicago: Rand McNally. ISBN: 9780528616600	Heckman, J. J., & Vytlacil, E. J. (2007). Econometric evaluation of social programs, Part I: Causal models, structural models and econometric policy evaluation. Handbook of Econometrics, 6B, 4779-4874.
Alias	Outcome Judgement Evaluation, Accountability Evaluation	CIE, counterfactual evaluation, counterfactual policy evaluation, impact evaluation
Correlati	4	5
Sintesi	Summative evaluation is evaluation conducted to render an overall judgement of a program, policy or product — its merit, worth, effectiveness or impact — typically after it has been implemented or has matured. Named by Michael Scriven in his 1967 essay 'The Methodology of Evaluation' as the counterpart to formative evaluation, its purpose is to inform consequential decisions: whether to continue, expand, replicate, defund or certify an intervention. It addresses the bottom-line question 'did it work, and was it worth it?' for audiences such as funders, policymakers and the public.	Counterfactual Impact Evaluation is a family of causal methods that estimates the effect of an intervention by comparing what actually happened to participants with what would have happened had the intervention not taken place. Formalised in the Rubin Causal Model and extended by Heckman, Imbens and others, CIE underlies most modern program and policy evaluation practice.