z-Tree (Zurich Toolbox for Readymade Economic Experiments) is a software application for experimental economic research developed by Urs Fischbacher at the University of Zurich. The software enables individually programmed, computer-aided economic laboratory experiments to be performed.
Information on the use of z-Tree
- You can freely select the z-Tree version with which to create your survey. We recommend version 2.6 or higher.
- Please incorporate files and pictures in z-Tree using relative pathnames so that these are also shown in the laboratory.
- Channels are possible.
- If possible, please produce a payout file using the questionnaire to ensure smooth payment.
- We work with the German version of z-Tree without specifying the font size and with a monitor resolution of 1920 x 1200.
The WISO Experimental Lab team will be happy to answer your questions or help you with problems. Contact the laboratory team(experiments.wiso"AT"uni-hamburg.de) if you have questions. Further information on the use and functionality of z-Tree is available on the page “Documentation and Support” at the University of Zurich.
An introductory video series on programming with zTree (confounded with some fundamentals of experimental economics), held by Prof. Dr. Andreas Nicklisch at WiSo Graduate School in June 2020, is available on Lecture2Go, lecture Slides and materials are also provided.
The following must always be quoted:
The experiment was created and carried out using the software z-Tree (Fischbacher 2007).
Urs Fischbacher (2007): z-Tree: Zurich Toolbox for Ready-made Economic Experiments, Experimental Economics 10(2), 171–178