Walking the Talk: The Need for a Trial Registry for Development Interventions

Ole Dahl Rasmussen, Nikolaj Malchow-Møller, Thomas Barnebeck Andersen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review


Recent advances in the use of randomised control trials to evaluate the effect of development interventions promise to enhance our knowledge of what works and why. A core argument supporting randomised studies is the claim that they have high internal validity. The authors argue that this claim is weak as long as a trial registry of development interventions is not in place. Without a trial registry, the possibilities for data mining, created by analyses of multiple outcomes and subgroups, undermine internal validity. Drawing on experience from evidence-based medicine and recent examples from microfinance, they argue that a trial registry would also enhance external validity and foster innovative research.
TidsskriftJournal of Development Effectiveness
Udgave nummer4
Sider (fra-til)502-519
Antal sider18
StatusUdgivet - 2011
Udgivet eksterntJa


  • Impact assessment
  • Randomised control trials
  • Trial registry