After many years programming experiments in E-Prime, we are starting to develop tasks using Open Sesame and its browser-oriented version OSWeb.

E-Prime is a great tool and has been Fabrice Parmentier’s go-to experiment programming software for several years. It will most likely remain a feature of the Cognitive Psychology Lab, but it is expected that Open Sesame, a free and open program, will progressively become our main software for experimental studies (online and lab-based) in the future.

Fabrice began exploring Open Sesame and its suitability for online experiments back in March 2021, leading him to become increasingly active in Open Sesame’s official forum site, helping other users to solve their task programming problems. This was noticed by Open Sesame’s creator and administrator of the forum, Prof. Sebastiaan Mathôt (University of Groningen, Netherlands), who has just invited Fabrice to join the team of moderators.

Open Sesame-s 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