Press releases & in the media

“z-Tree unleashed”—C-SEB researchers develop tool for conducting z-Tree experiments online

C-SEB researchers at the Cologne Laboratory for Economic Research (CLER) have developed a new tool for conducting online experiments based on the established z-Tree software. z-Tree unleashed allows subjects to participate in z-Tree experiments via web browser. The administration of the experiment is also possible using a web browser. “For the first time, it is now possible to play z-Tree experiments over the internet without malfunctions or interruptions,” says Max Grossmann, CLER lab manager and lead developer. “Everything is completely platform-independent, all you need is a browser.” Find the developers’ working paper on the project here. Further information is available on the z-Tree unleashed website or from the developers at
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