International development is a major political priority in many countries, with billion-dollar budgets. But, as recently as 2006, the influential Center for Global Development published a damning report entitled 'When will we ever learn?', essentially arguing that the entire policy area had been built on a foundation of guesswork and good intentions.
 
In the two decades since then, a huge amount of work has been done to bring rigorous evidence to this complex and often values-laden political area. For the Science for Policy podcast, Marie Gaarder and Thomas Kelly from the International Initiative for Impact Evaluation cover all the bases: the evidence we have and the evidence we need, how it should be used, and what's still getting in the way.
Resources mentioned in this episode
Report 'When will we ever learn?': https://www.cgdev.org/publication/when-will-we-ever-learn-improving-lives-through-impact-evaluation 

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