Giel Ton
Giel Ton is a Research Fellow at the Institute of Development Studies and Co-Director of the Centre for Development Impact. He promotes contribution analysis as an overarching approach to impact evaluation and learning of development policy and practice, convening IDS’s professional short course on Contribution Analysis for Impact Evaluation.
Most of his research relates directly or indirectly to value chain governance and coordination in smallholder agriculture. These imply configurations of incentives and institutional arrangements resulting from an amalgam of (sometimes conflicting) formal and informal rules and regulations. Next to this academic interest, he gained 25 years of professional experience in supporting economic farmer organisations in markets, 12 years of which he was based in Bolivia and Nicaragua.
In his research, he explores the inequity of power in those relations and analyses the heterogeneity of effects/impact, using the core question of realist evaluation: What works for whom under what conditions, and why? In one of his latest publications, Contribution, Causality, Context, and Contingency when Evaluating Inclusive Business Programmes’, he elaborates on the methodological challenges of evaluating impacts in inclusive business programmes and highlights the promises of a behavioural system lens to identify the relevant context conditions that make interventions work for some, and not for others.
Contributed by this member
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- This Research and Evidence Paper presents the theory-based and participatory evaluation design of the Child Labour: Action-Research-Innovation in South and South-Eastern Asia (CLARISSA) programme.
- This IDS Bulletin paper examines an impact evaluation of the "Making Markets Work for the Poor" (M4P) program in Ethiopia.
- This article from the Institute of Development Studies (IDS) discusses the Centre for Development Impact's five-year journey in innovating and understanding contribution analysis as a primary method for impact evaluation.
- This briefing note shares guidance on using contribution analysis for adaptative management by examining how the approach enables programmes to work with theories of change in a practical, reflexive way and how its findings can inform progr
- This paper explores how contribution analysis can be used to give a quantitative sense of a contribution's importance.
- This article, written by Giel Ton, Sietze Vellema and Lan Ge for the IDS Bulletin, argues that instead of using household surveys to assess the effects of programs the focus should be on detailed measurement of more immediate