There is increasing demand from decision makers, funders and those commissioning evaluations to better understand the role their interventions may have played in bringing about change. Meanwhile, resources like time and budgets to undertake impact evaluations are often incredibly limited. 

At Pamoja, we want to help you save time during evaluations and gain more confidence in your impact claims. Ultimately, if you're a consultant, we want you to attract more clients and if you're an organisation, we want to help you help you make robust claims in order to possibly attract more funding. All this, in a third of the time you would usually spend during an evaluation.

Contribution Tracing offers an unparalleled level of rigour in establishing causal inference, determining if, and how, an intervention played a role in bringing about change. 


5-Day MasterClass

During an intensive 5-day course, you will be the guest of Gavin Stedman-Bryce, a leading Contribution Tracing developer and practitioner, at his home in the stunning Scottish countryside (just 35 minutes from Glasgow International Airport). Each Masterclass is strictly limited to just 5 learners, offering a uniquely personal, learning experience. The Masterclass takes a creative approach to teaching the knowledge and skills required to design and implement an impact evaluation using Contribution Tracing.

2-Day Quick Start Course

This is a two-day intensive course which can help you understand the theory underpinning Contribution Tracing.



Contribution Tracing, is an exciting new theory-based, impact evaluation approach. It is based on the principles of Process Tracing and Bayesian Updating. Contribution Tracing centres on testing a ‘Contribution Claim’ - a hypothesis about the role a project or programme may have played in bringing about change. Contribution Tracing is an important new approach in any evaluator’s arsenal. 



Key benefits of the approach include:

  • Can be applied in complex interventions e.g. policy influencing, advocacy, governance and citizen empowerment projects or programmes.
  • Applicable where experimental approaches are infeasible e.g. where counterfactuals cannot be identified.
  • Provides guidance on what evidence to collect, supporting evidence design strategies.
  • It changes the way we look at evidence by focusing on identifying and seeking out the best quality evidence, sorting the data wheat from the chaff.
  • Avoids the ‘data trap’; wasting time, energy and resources gathering evidence which has limited ability to strengthen confidence in a Contribution Claim.
  • Quantitatively determines the relative strength of evidence,
  • Focuses limited resources on collecting the ‘right’ evidence; making impact evaluation possible, even for those organisations with limited budgets.
  • Key steps can be applied in a participatory way to engage stakeholders.