About Monitoring, Evaluation, and Learning
Overview of IPA’s Monitoring, Evaluation, and Learning (MEL) resources, covering theory of change development and A/B testing approaches that help organizations build evidence-based learning systems.
Monitoring, Evaluation, and Learning (MEL) helps organizations understand whether their programs work, why they work, and how to improve them. The resources in this section support teams that want to build learning into their programs—from articulating how a program creates change to running rapid experiments that guide decisions.
What You Will Find Here
TipProgram Theory
- Theory of Change - How to develop a robust Theory of Change, linking program activities to outcomes through evidence-based pathways
TipA/B Testing
- What is A/B Testing? - A rigorous experimentation method that compares variations of a program or product to enable rapid learning
- When A/B Testing Works - Matching A/B tests to your program’s stage of development and your organization’s capabilities
- Implementing A/B Tests - A structured, four-step Learning Roadmap for designing and prioritizing experiments
- Practical Guidance for A/B Testing - Lessons from supporting organizations in adopting A/B testing
Getting Started
New to MEL? Start with the Theory of Change guide to map how your program creates impact, then read What is A/B Testing? to see how rapid experiments can test the assumptions in that map.