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Review of MTurk as a Participant Pool
We recently published on Current Directions in Psychological Science a review of MTurk as a source of survey and experimental data. We discuss the traits of the MTurk samples, why people become MTurk...
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MTurk Workshop at ACR
The use of Mturk by behavioral researchers continues to increase. Despite the evidence on the benefits (and drawbacks) of MTurk, many researchers, reviewers, and editors intuitively distrust the...
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Excluding MTurk workers who participated in your previous studies: An Excel...
This document guides you through a simple method to avoid recruiting MTurk workers for your studies who already participated in a certain study of yours. The core of the procedure relies on Excel (as...
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IT’S A TRAP! Instructional manipulation checks prompt increased systematic...
Guest post by David J. Hauser In this new article, Norbert Schwarz and I show in two experiments that answering an instructional manipulation check (IMC) changes the way participants approach later...
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MTurk workshop at EMAC
On May 27 I held a workshop at EMAC on conducting behavioral research using Amazon Mechanical Turk samples. Slides are available here.
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Using Nonnaive Participants Can Reduce Effect Sizes
Guest post by Jesse Chandler In a new Psychological Science article we provide direct evidence that effect sizes for experimental results are reduced among participants who have previously completed an...
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How many people can your lab reach on MTurk?
Guest post by Neil Stewart How many people can your lab reach on MTurk? We used the capture-recapture method¹ from wildlife ecology to estimate how many workers you are sampling from. Our estimate is...
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Using MTurk to Estimate Effects of Local Context in Behavioral Games
Guest Post by Mark Keuschnigg Local confinement of samples and results has motivated questions as to the external validity of social science experiments. The last 15 years have thus seen a sharp...
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Using MTurk to Study Political Ideology
Guest post by Scott Clifford, Ryan Jewell, and Philip Waggoner MTurk is increasingly used to study questions about politics and political psychology. MTurk samples are well known to deviate from the...
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How Participant Characteristics and Behavior Vary Over Time and Day on MTurk
Guest Post by Antonio Alonso Arechar, Gordon Kraft-Todd, David Rand, and Jesse Chandler People who participate in a research study differ depending on when the study occurs. For example, people who...
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