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Chassang, Sylvain,
Gerard Padró I Miquel, and
Erik Snowberg. 2012. "Selective Trials: A Principal-Agent Approach to Randomized Controlled Experiments."
,
102(4): 1279-1309.
Show Article Details
DOI: 10.1257/aer.102.4.1279
Abstract:We study the design of randomized controlled experiments when outcomes are significantly affected by experimental subjects' unobserved
effort expenditure. While standard randomized controlled trials (RCTs) are internally consistent, the unobservability of effort compromises external validity. We approach trial design as a principal-agent problem and show that natural extensions of RCTs—which we call selective trials—can help improve external validity. In particular, selective trials can disentangle the effects of treatment, effort, and the interaction of treatment and effort. Moreover, they can help identify when treatment effects are affected by erroneous beliefs and inappropriate effort expenditure. (JEL C90, D82)
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Authors:
Chassang, Sylvain (Princeton U)
Padró I Miquel, Gerard (London School of Economics)
Snowberg, Erik (CA Institute of Technology)
JEL Classifications:
C90: Design of Experiments: General
D82: Asymmetric and Private Information
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