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We welcome The European Society for Cognitive Psychology (ESCOP) as our newest supporter!



Welcome to the OpenSesame documentation area! Here you can find everything you always wanted to know about your favorite free and cross-platform experiment builder. The latest stable version of OpenSesame is 2.9.5 Hesitant Heisenberg, released on April 15, 2015 (release notes).


Tutorial (Beginner)

Tutorial (Advanced)


Video 1. Video tutorial by Chris Longmore.

To cite OpenSesame in your work, please use the following reference:

Mathôt, S., Schreij, D., & Theeuwes, J. (2012). OpenSesame: An open-source, graphical experiment builder for the social sciences. Behavior Research Methods, 44(2), 314-324. doi:10.3758/s13428-011-0168-7