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z-Tree unleashed: A novel client-integrating architecture for conducting z-Tree experiments over the Internet

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  • Duch, Matthias L.
  • Grossmann, Max R.P.
  • Lauer, Thomas

Abstract

We present z-Treeunleashed, a novel approach and set of scripts to aid the implementation of computerized behavioral experiments outside the laboratory. z-Treeunleashed enables subjects to join the experiment using a web portal that requires no software apart from a web browser. Experimenters are likewise enabled to administer their experiments from anywhere in the world. Except for z-Tree itself, z-Treeunleashed is entirely based on free and open-source software. In this paper we give a high-level overview of z-Treeunleashed’s features and benefits and its design. We also show how to set up the server and demonstrate the steps required for conducting an entire experiment. We subsequently explain how to leverage the security and routing features of a virtual private network with z-Treeunleashed, enabling servers to securely run behind routers.

Suggested Citation

  • Duch, Matthias L. & Grossmann, Max R.P. & Lauer, Thomas, 2020. "z-Tree unleashed: A novel client-integrating architecture for conducting z-Tree experiments over the Internet," Journal of Behavioral and Experimental Finance, Elsevier, vol. 28(C).
    • Handle: RePEc:eee:beexfi:v:28:y:2020:i:c:s2214635020303270
    DOI: 10.1016/j.jbef.2020.100400
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    1. James Pettit & Daniel Friedman & Curtis Kephart & Ryan Oprea, 2014. "Software for continuous game experiments," Experimental Economics, Springer;Economic Science Association, vol. 17(4), pages 631-648, December.
    2. Chen, Daniel L. & Schonger, Martin & Wickens, Chris, 2016. "oTree—An open-source platform for laboratory, online, and field experiments," Journal of Behavioral and Experimental Finance, Elsevier, vol. 9(C), pages 88-97.
    3. 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.
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