Letters
Measurement vs action
1 June 2009
Alliance magazine
When Deepti Goel and Nachiket Mor say that ‘REs [randomized experiments] create two groups that are identical in all respects except for the intervention itself’ (Alliance March 2009, pages 48-49), I suggest that they are assuming the truth of something that is the crucial point at issue. How are you going to find or create two identical groups and how are you going to know that ‘any differences in group outcomes can therefore be attributed to the intervention’, as the authors go on to assert?
