We use Google Analytics in compliance with German Data Protection Law. The site gathers data for the sole purpose of improving its services. You're able to decline
This website uses Google Analytics, a web analytics service provided by Google, Inc. ('Google').
Google Analytics uses 'cookies', which are text files placed on your computer, to help the website analyze how users use the site.
The information generated by the cookie about your use of the website (including your IP address) will be transmitted to and stored by Google on servers in the United States.
In case of activation of the IP anonymization ( which is true for this website ), Google will truncate/anonymize the last octet of the IP address for Member States of the European Union as well as for other parties to the Agreement on the European Economic Area.
Only in exceptional cases, the full IP address is sent to and shortened by Google servers in the USA. On behalf of the website provider Google will use this information for the purpose of evaluating your use of the website, compiling reports on website activity for website operators and providing other services relating to website activity and internet usage to the website provider.
Google will not associate your IP address with any other data held by Google.
However, please note that if you do this, you may not be able to use the full functionality of this website.
Furthermore you can prevent Google's collection and use of data (cookies and IP address) by downloading and installing the browser plug-in available under
You can refuse the use of Google Analytics by clicking on the button bellow ("Disable Google Analytics").
An opt-out cookie will be set on the computer, which prevents the future collection of your data when visiting this website:
Further information concerning the terms and conditions of use and data privacy can be found at http://www.google.com/analytics/terms/gb.html or at http://www.google.com/intl/en_uk/analytics/privacyoverview.html.
Please note that on this website, Google Analytics code is supplemented by 'gat._anonymizeIp();' to ensure an anonymized collection of IP addresses (so called IP-masking).
Henning Hermes (NHH Bergen, Norway and IZA), Daniel Schunk (University of Mainz), Eva Berger (German Council of Economic Experts, Wiesbaden), Kirsten Winkel (University of Mainz), Ernst Fehr (University of Zurich and IZA)
Ziteng Lei (University of California, Santa Barbara), Le Kang (Peking University), Yang Song (Colgate University), Peng Zhang (Chinese University of Hong Kong, Shenzhen)