Rigotti, Luca and Wilson, Alistair and Gupta, Neeraja
(2023)
The Experimenters' Dilemma: Inferential Preferences over Populations.
Working Paper.
UNSPECIFIED.
(Unpublished)
Abstract
We examine the experimenter's preferences over different populations using statistical power under a fixed budget as the stand-in for the researcher's utility. We consider five populations commonly used in experiments by economists: undergraduate students at a physical location, undergraduate students in a virtual setting, Amazon MTurk "workers", a filtered MTurk subset from CloudResearch, and Prolific. Focusing on noise due to inattention, observation costs dominate the comparisons, with the larger online population samples superior to the smaller lab samples. However, once we factor in responsiveness to treatment, the lab samples have greater power than either MTurk or Prolific.
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