Glossary of Key Terms in Evaluation and Results Based Management

OECD-DAC Working Party on Aid Evaluation

Created 11/23/2011

Tools and Templates



A measure of how economically resources/inputs (funds, expertise, time, etc.) are converted to results


Extent to which an activity or a program can be evaluated in a reliable and credible fashion.

Note: Evaluability assessment calls for the early review of a proposed activity in order to ascertain whether its objectives are adequately defined and its results verifiable.


The systematic and objective assessment of an on-going or completed project, programme or policy, its design, implementation and results. The aim is to determine the relevance and fulfillment of objectives, development efficiency, effectiveness, impact and sustainability. An evaluation should provide information that is credible and useful, enabling the incorporation of lessons learned into the decision– making process of both recipients and donors. Evaluation also refers to the process of determining the worth or significance of an activity, policy or program. An assessment, as systematic and objective as possible, of a planned, on-going, or completed development intervention.

Note: Evaluation in some instances involves the definition of appropriate standards, the examination of performance against those standards, an assessment of actual and expected results and the identification of relevant lessons.

Related term: review

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