CDI Practice Paper
Melanie Punton, Katharina Welle
Institute of Development Studies, Brighton, March 2015

This CDI Practice Paper by Melanie Punton and Katharina Welle explains the methodological and theoretical foundations of process tracing, and discusses its potential application in international development impact evaluations.

It draws on two early applications of process tracing for assessing impact in international development interventions: Oxfam Great Britain’s contribution to advancing universal health care in Ghana, and the impact of the Hunger and Nutrition Commitment Index (HANCI) on policy change in Tanzania. In a companion to this paper, Practice Paper 10 Annex describes the main steps in applying process tracing and provides some examples of how these steps might be applied in practice.

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