chaTree: An oTree Addon Allowing Face-to-Face Communication in Online Group Experiments

Timo Promann, Jan-Patrick Mayer, Gerd Muehlheusser, Andreas Roider, Eugen Tereschenko and Niklas Wallmeier

No 11734, CESifo Working Paper Series from CESifo

Abstract: This paper presents an oTree addon that allows to include face-to-face communication in the form of a video chat in online group experiments. Group decisions, as opposed to individual decision-making, have recently gained considerable attention. The open-source addon is easy to use, exhibits a lean design, and allows to record communication patterns. It has already been successfully employed in a number of group experiments. We explain how to implement the addon and provide a number of recommendations for smooth functionality.

Keywords: group decisions; video chat; online experiments; experimental software; oTree (search for similar items in EconPapers)
JEL-codes: C88 C92 (search for similar items in EconPapers)
Date: 2025
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