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The Cambridge Randomizer. The Problem :. In carefully designed experiments, random assignment ( RA ) procedures can be quite expensive, time-consuming and difficult to manage

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the problem
The Problem:
  • In carefully designed experiments, random assignment (RA) procedures can be quite expensive, time-consuming and difficult to manage
  • RA is usually carried out by the research team, not the treatment-provider, in order to increase the likelihood that the integrity of the research will not be challenged.
  • Can treatment providers conduct the RA themselves, without jeopardizing the integrity of the RCT?
the cambridge randomizer3
The Cambridge Randomizer
  • A low-cost, secure and user-friendly online portal for RA
  • Treatment-providers can now conduct the RA themselves :
    • Secure log-in (meets data protection demands)
    • Assess eligibility of cases to participate in the RCT
    • provide instantaneous baseline information for each case
  • Immediate random llocationinto treatment and control groups.
  • The Randomizer automatically sends an electronic report to the research team with each case that goes through the pipeline  Researchers maintain control over the scientific process
  • Both quantitative and qualitative data can be accommodated.
ba285@cam ac uk

Ariel, Barak, Lawrence Sherman and Jordi Vila (forthcoming?). “Random Assignment without Tears: How to Stop Worrying and Love the Cambridge Randomizer.” Journal of Experimental Criminology