21 April 2021

Join us via Zoom 16:00 - 17:00

Journal Club welcomes Drew Koleros

We are pleased to announce that Drew Koleros will be joining us to discuss his paper “Using Actor-Based Theories of Change to Conduct Robust Evaluation in Complex Setting’.

This journal club meeting provides an opportunity to discuss with Drew:

  • the development, validation, and use of program theories in evaluation practice.
  • ensuring that program theories, or theories of change are “evaluable.”
  • buy-in from program stakeholders on the evaluable ToC
  • how good actor based ToCs allow for good impact stories
  • gathering data for impact stories


The use of theories of change (ToCs) is a hallmark of sound evaluation practice. As interventions have become more complex, the development of ToCs that adequately unpack this complexity has become more challenging. Equally important is the development of evaluable ToCs, necessary for conducting robust theory-based evaluation approaches such as contribution analysis (CA). This article explores one approach to tackling these challenges through the use of nested actor-based ToCs using the case of an impact evaluation of a complex police-reform program in the Democratic Republic of Congo, describing how evaluable nested actor-based ToCs were built to structure the evaluation.

Koleros, A., Mayne, J. (2019). Using Actor-Based Theories of Change to Conduct Robust Evaluation in Complex Settings. Canadian Journal of Program Evaluation, doi: 10.3138/cjpe.52946

Andrew Koleros is a researcher at Mathematica Policy Research. He has over fifteen years of experience in the design and implementation of programme monitoring, evaluation and learning systems for development programmes.

John Mayne was an independent advisor on public sector performance whose work focused largely on international development evaluation and results-based management work.

This event is for members only, who can register here to join us