Discussion paper DP18254 Strengthening Fragile States: Evidence from Mobile Salary Payments in Afghanistan Joshua Blumenstock Michael Callen Anastasiia Faikina Stefano Fiorin Tarek Ghani 30 Jun 2023 Development Economics Political Economy
Discussion paper DP12142 Why Do Defaults Affect Behavior? Experimental Evidence from Afghanistan Michael Callen Joshua Blumenstock Tarek Ghani 13 Jul 2017 Development Economics D14
Discussion paper DP11400 Mobile-izing Savings with Automatic Contributions: Experimental Evidence on Present Bias and Default Effects in Afghanistan Michael Callen Joshua Blumenstock Tarek Ghani 20 Jul 2016 Development Economics