The Columbia Experimental Laboratory for Social Sciences (CELSS) is an interdisciplinary resource for Columbia researchers in Economics, Political Science, Sociology, SIPA, and the Business School, as well as the Barnard Economics department. Its goal is to facilitate experimental research in the social sciences, with a focus on computer-based experiments, whether physically located in CELSS’ lab, or web-based.

In line with the rest of Columbia University, CELSS' space is now physically closed because of the COVID-19 outbreak.

CELSS' Lab Manager (Silvio Ravaioli, [email protected]), and Programming Consultants (Nithya Swaminathan, [email protected], and Radhika Goyal, [email protected]) can be contacted remotely. Nithya is proficient in Qualtrics/JavaScript, and Radhika is proficient in oTree/Python. Both of them can help you for the programming and testing of new experiments.

For the Spring 2021 semester, the programming consultants are available at the following days and time. Please contact them by email beforehand to confirm the availability to meet on Zoom.

Monday 4.30-6.30pm: Nithya (zoom)
Tuesday 1-3pm: Radhika (zoom), 3-4pm: both (by appointment only)
Thursday 1-3pm: Radhika (by appointment only)
Friday 2-4pm: Nithya (by appointment only)


Please check regularly our web page for updates.


zTree course online - Feb 22-24, 2021

You can register for the Course in Programming Economic Experiments with zTree, organized by Urs Fischbacher (University of Konstanz). Details in the document attached.