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Contribution analysis (CA) is a theory-based approach that has become widely used in recent years to conduct defensible evaluations of interventions for which determining attribution using existing methodologies can be problematic. This critical review of the literature explores contribution analysis in detail, discussing its methods, the evolution in its epistemological underpinnings to establishing causality, and some methodological challenges that are presented when CA is applied in practice. The study highlights potential adaptations to CA that can improve rigour, and describes areas where further work can strengthen this useful evaluation approach. L’analyse de contribution est une approche fondee sur la theorie largement utilisee ces dernieres annees pour realiser des evaluations, de facon valable, d’interventions pour lesquelles il est difficile de determiner l’attribution avec les methodologies existantes. Cette analyse critique de la documentation explore de facon detaillee l’analyse de contribution, en discutant de ses methodes, de l’evolution de ses fondements epistemologiques visant a etablir la causalite et de certains defis methodologiques presents lorsque l’analyse de contribution est utilisee en pratique. L’etude met en relief des adaptations possibles de l’analyse de contribution qui pourraient en ameliorer la rigueur et decrit les domaines dans lesquels des travaux plus pousses pourraient renforcer cette utile approche d’evaluation.

Contribution Analysis: Theoretical and Practical Challenges and Prospects for Evaluators