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

Author

Listed:
  • Timo Promann
  • Jan-Patrick Mayer
  • Gerd Muehlheusser
  • Andreas Roider
  • Eugen Tereschenko
  • Niklas Wallmeier

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.

Suggested Citation

  • Timo Promann & Jan-Patrick Mayer & Gerd Muehlheusser & Andreas Roider & Eugen Tereschenko & Niklas Wallmeier, 2025. "chaTree: An oTree Addon Allowing Face-to-Face Communication in Online Group Experiments," CESifo Working Paper Series 11734, CESifo.
    • Handle: RePEc:ces:ceswps:_11734
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    References listed on IDEAS

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    1. Cevat Giray Aksoy & Jose Maria Barrero & Nicholas Bloom & Steven J. Davis & Mathias Dolls & Pablo Zarate, 2022. "Working from Home Around the World," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 53(2 (Fall)), pages 281-360.
    2. Urs Fischbacher, 2007. "z-Tree: Zurich toolbox for ready-made economic experiments," Experimental Economics, Springer;Economic Science Association, vol. 10(2), pages 171-178, June.
    3. Muehlheusser, Gerd & Promann, Timo & Roider, Andreas & Wallmeier, Niklas, 2024. "Honesty of Groups: Effects of Size and Gender Composition," IZA Discussion Papers 16954, Institute of Labor Economics (IZA).
    4. Stefano DellaVigna & Devin Pope, 2018. "What Motivates Effort? Evidence and Expert Forecasts," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 85(2), pages 1029-1069.
    5. Gary Charness & Matthias Sutter, 2012. "Groups Make Better Self-Interested Decisions," Journal of Economic Perspectives, American Economic Association, vol. 26(3), pages 157-176, Summer.
    6. Tamar Kugler & Edgar E. Kausel & Martin G. Kocher, 2012. "Are Groups more Rational than Individuals? A Review of Interactive Decision Making in Groups," CESifo Working Paper Series 3701, CESifo.
    7. repec:osf:socarx:q4dyg_v1 is not listed on IDEAS
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    Keywords

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    JEL classification:

    • C88 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Other Computer Software
    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior

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