2: Why Randomize?

Resource link

This in-depth presentation introduces you to the 'whys' and 'hows' of randomised assignment and randomised sampling for evaluation as well as when it should be used and potential pitfalls.

The second in a series of lecture notes produced by Abdul Latif Jameel Poverty Action Lab and the Massachusetts Institute of Technology.

The resource provides the user with a video of the lecture presented by Dan Levy and the lecture-note slides.


  • Background
  • What is a randomized evaluation?
  • Advantages and limitations of experiments
  • How wrong can you go: “Vote 2002” campaign
  • Conclusions


Levy D, (2009) 2. Why Randomize?,   Abdul Latif Jameel,  Poverty Action Lab Executive Training: Evaluating Social Programs Lecture Notes,  Massachusetts Institute of Technology (MIT). Retrieved from https://live-qa.ocw.mit.edu/courses/res-14-001-abdul-latif-jameel-poverty-action-lab-executive-training-evaluating-social-programs-2009-spring-2009/resources/2-why-randomize/

Massachusetts Institute of Technology (MIT) https://ocw.mit.edu/

Poverty Action Lab (PAL) http://www.povertyactionlab.org/

'2: Why Randomize?' is referenced in: