Policy impact assessments, or simply impact assessments (IAs), are formal, evidence-based procedures that assess prospective economic, social, and environmental effects of a public policy proposal.[1] They have been incorporated into policy making in the OECD countries and the European Commission. If the assessment is favourable, and the proposed policy is enacted—after a suitable length of time for the policy to gain traction—it might be followed by an impact evaluation; ideally, assessed impacts before the fact and evaluated impacts after the fact are not wildly divergent. In some cases, impact becomes politicized due to a change in the governing regime between assessment and evaluation, and non-congruence might be amplified for ideological reasons. In other cases, the world is a complex place, and assessment is not a perfect art.
Key types of impact assessments include global assessments (global level), policy impact assessment (policy level), strategic environmental assessment (programme and plan level), and environmental impact assessment (project level). Impact assessments can focus on specific themes, such as social impact assessments and gender impact assessments.
IAs can improve legislation by:[2]
Informing policy makers about potential economic, social, and environmental ramifications
Improving transparency so that contributions to sustainability and "better regulation" are disclosed and special interest lobbying is discouraged
Increasing public participation in order to reflect a range of considerations, thereby improving the legitimacy of policies
Clarifying how public policy helps achieve its goals and priorities through policy indicators
Contributing to continuous learning in policy development by identifying causalities that inform ex-post review of policies
^Adelle, Camilla; Weiland, Sabine (2012). "Policy assessment: the state of the art". Impact Assessment and Project Appraisal. 30 (1): 25–33. doi:10.1080/14615517.2012.663256. S2CID 130512741.
^Jacob, Klaus; Ferretti, Johanna; Guske, Anna-Lena; Turnpenny, John; Jordan, Andrew; Adelle, Camilla (2011). "Sustainability in Impact Assessments A Review of Impact Assessment Systems in selected OECD countries and the European Commission" (PDF). OECD. SG/SD(2011)6/FINAL. Retrieved 2012-12-10.
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