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Winners of special competition for real-stakes experiments: TESS is pleased to announce the winning proposals of our competition for experiments with monetary rewards. The 4 winning proposals and authors are listed here. Congratulations to the winners of the competition and thank you to all who participated and submitted proposals! (1/2015)

Policy change: TESS will begin posting accepted proposals for fielded projects online when it posts the raw data. Click here for details. (7/2014)

New APIs: TESS is pleased to announce a new team of associate principal investigators, which includes a diverse array of over 65 individuals from fields spanning across all of the social sciences. Click here to see TESS's team of APIs. (4/2013)

Call for proposals: TESS's Short Studies Program (SSP), a new mechanism for fielding brief population-based survey experiments, is now accepting proposals. Click here for more information. (12/2012)

Click here for past announcements.


Important Note: The current TESS grant has been exhausted. As such, we will not accept any new proposals (of any type) after noon on Friday, April 29, 2016. We have applied for continued funding and, if approved, anticipate accepting new proposals next Fall.


Time-sharing Experiments for the Social Sciences (TESS) offers researchers the opportunity to capture the internal validity of experiments while also realizing the benefits of working with a large, diverse population of research participants.

Investigators submit proposals for experiments, and TESS fields successful proposals for free on a representative sample of adults in the United States using GfK (formerly Knowledge Networks), a highly-respected Internet survey platform.

The current principal investigators of TESS are Jeremy Freese (Stanford University) and James Druckman (Northwestern University). TESS was started by Arthur Lupia (University of Michigan) and Diana Mutz (University of Pennsylvania).

TESS is funded by the National Science Foundation (SES-1227179).


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