. Le-dispositif-qui-sera-mis-en-oeuvre-se-fonde-sur-une-littérature and . Joly, 2017) et sur les travaux de l'Inra concernant l'analyse des impacts de la recherche agronomique (Projet Asirpa). L'évaluation du PPR et des projets qui seront financés sera réalisée en temps réel. Alors que l'évaluation de l'impact de la recherche est le plus souvent réalisée ex post, il s'agira cette fois-ci de la réaliser in itinere, 2015.

, L'ambition et les échelles de temps du PPR requièrent de prendre en compte deux caractéristiques essentielles dans cette évaluation

, / la non linéarité : les transformations visées sont de nature systémique

, Par évaluation formative, on entend une évaluation qui a pour fonction d'améliorer l'apprentissage en cours, d'identifier les difficultés rencontrées, et de contribuer au maintien du programme sur un chemin d'impact. L'évaluation devra également être itérative car il faudra tenir compte des résultats et de leurs éventuels effets (y compris les non effets ou les effets négatifs) pour réviser régulièrement le chemin d'impact et, partant, Compte tenu de ces caractéristiques, l'évaluation sera formative et itérative

C. Dans-le, une évaluation en temps réel, l'évaluation par induction arrière part de la cible visée (« expected impact ») et remonte au présent. Les grands principes de la méthode qui sera déployée sont les suivants: -Identification des objectifs de transformation, à l'horizon 2050 ainsi qu'à différents horizons de temps. Cette identification sera

, Construction par induction arrière des chemins d'impact (niveau programme et projets), ce qui nécessitera d'expliciter les théories du changement sous-jacentes, 2012.

, Représentation des écosystèmes (programme et projets) : identification des facteurs facilitant/ limitant; identification des acteurs et de leur rôle potentiel

, Construction des scénarios : en déduire les principaux points de rendez-vous et les éléments de suivi anticipés

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