Sociology

Business

Metric (unit)

Social science

Biology

Server

Internet privacy

Data collection

Epistemology

World Wide Web

Marketing

Philosophy

Geography

Ecology

Data quality

Data science

Scale (ratio)

Quality (philosophy)

Computer science

Amazon rainforest

Cartography

Computer security

Political Science Research and Methods

Amazon's Mechanical Turk is widely used for data collection; however, data quality may be declining due to the use of virtual private servers to fraudulently gain access to studies. Unfortunately, we know little about the scale and consequence of this fraud, and tools for social scientists to detect and prevent this fraud are underdeveloped. We first analyze 38 studies and show that this fraud is not new, but has increased recently. We then show that these fraudulent respondents provide particularly low-quality data and can weaken treatment effects. Finally, we provide two solutions: an easy-to-use application for identifying fraud in the existing datasets and a method for blocking fraudulent respondents in Qualtrics surveys.

The shape of and solutions to the MTurk quality crisis