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The Laboratory for Interdisciplinary Evaluation of Public Policies (LIEPP) is a research platform at Sciences Po funded under the "Investissements d'avenir" programme of the French National Research Agency. Created in 2011, this laboratory is being redeployed since 2020 in partnership with the University of Paris (UP). Its aim is to develop the evaluation of public policies through an interdisciplinary scientific approach.

The research carried out at LIEPP analyses the functioning and effects of numerous public policies such as educational policies, environmental policies, migration policies, health policies, and social and socio-fiscal policies. They address, in a transversal way, the public policy dimensions of major societal issues, such as environmental risks, inequalities, discrimination, the crisis of expertise and democracy.

LIEPP is based on an innovative approach to evaluative research: articulating quantitative, qualitative and comparative methods; confronting disciplinary views on the evaluated policies; and promoting the cross-fertilization of methodological and theoretical knowledge from different disciplines, with those from the international field of evaluation.

Through its activities, LIEPP works to better anchor the evaluation approach in academic social science research. But it also works in conjunction with the experimental sciences, particularly in the context of collaboration between Université de Paris and Sciences Po, in order to better connect this knowledge to its consequences for public action. Finally, in the spheres of public action, it contributes to the public debate and to reflections on evaluation involving other actors (administrative, parliamentary, associative, etc.), with a view to promoting the evaluation process and improving its quality.

For further information please visit the LIEPP website




LIEPP publications

This work benefit from the support provided by the ANR and the French government under the Investments for the Future program LABEX (ANR-11-LABX-0091, ANR-11-IDEX-0005-02) and the Idex University of Paris (ANR-18-IDEX-0001).


Working Paper

Written by one or more researchers from an ongoing project, the working paper aims to stimulate scientific discussions and to contribute to a better understanding of the topic.

Policy Brief

Policy Briefs are intended to present the results of research that has already been completed, and that has already been validated in the form of a research report or scientific article, for example, which should be referenced in the PB. The PB aims to present these results in a synthetic manner, emphasizing the implications for the evaluation of public policies. The PB is short (less than 5,000 words) and aims to make the results of the research accessible to a wide audience (public actors, civil society).

Débats du LIEPP

Publications in the “Débats du LIEPP” collection present an overview of the different scientific positions on a public policy evaluation question. They vary in size, from 20 to 40 pages, and they generally include politician's reactions to the scientific public policy debate as well.


Reports published with the contributions of LIEPP members.