Organization & Address

The provider of this website is GESIS – Leibniz-Institute for the Social Sciences. GESIS has three locations with the head office in Mannheim:

GESIS – Leibniz-Institute for the Social Sciences in Mannheim
Institute address:
68159 Mannheim
Postal address:
P.O. Box 122155
68072 Mannheim
Phone.: +49/(0)621/1246-0
Fax: +49/(0)621/1246-100

GESIS – Leibniz-Institute for the Social Sciences in Cologne
Institute address:
Unter Sachsenhausen 6-8
50667 Köln
Phone: +49/(0)221/47694-598
Fax: +49/(0)221/47694-199


Prof. Dr. Christof Wolf
President of GESIS
E-Mail: praesident(at)gesis(dot)org

Register Court and Number:

Local court: Mannheim
Association register number: VR1449
Value added tax identification number: DE 814 839 735

Legal Notice

GESIS – Leibniz-Institute for the Social Sciences does not assume any liability for the provided information. Liability claims against the author due to material or immaterial damage caused by the use or disuse of the provided information and / or by the use of incorrect and incomplete information are generally excluded, unless the author has acted with gross negligence or willful intent. All offers are without engagement and subject to confirmation. The author expressly reserves the right to modify, amend, delete or temporarily or permanently cease publication of parts of the pages or the entire content without further notice.

GESIS – Leibniz-Institute for the Social Sciences does not take on responsibility for the contents of direct or indirect references or links to other websites ("links") . The author hereby expressly declares that at the time the link was set up, no unlawful contents were noticeable on the linked websites. The author does not have any influence on the current and future design, contents or authorship of the linked websites. Therefore, the author hereby dissociates himself from all contents of linked websites which were modified after the link was set up. This statement is valid for all links and references set up on our website as well as for external entries in the author's guest books, discussion forums and mailing lists. The provider of the linked website is exclusively liable for illegal, incorrect or incomplete contents and especially for damage resulting from the use or disuse of this information and not the person who merely makes a reference to this publication via a link.

The copyright for published items created by the GESIS – Leibniz-Institute for the Social Sciences remains with GESIS. Duplication or use of such pictures, audio documents, video sequences and texts in other electronic or printed publications is only allowed with the author's express consent.

Data protection

This website uses etracker technology ( to collect visitor behavior data. The data is collected anonymously to be used for marketing and optimization purposes. All visitor data is saved using an anonymous user ID and can be used to aggregate a usage profile. Cookies may be used for this purpose. Cookies are small text files that are stored in the visitor’s local browser cache. Using such cookies it is possible to recognize the visitor’s browser. The data collected via etracker technology will not be used to determine the personal identity of the website visitor or compiled with personal data pertaining to the user of the pseudonym unless agreed to separately by the person concerned.

The collection and storage of data may be revoked at any time with respect to subsequent services unter

If there is an option to enter personal or business data (e-mail addresses, names, addresses) on the website, the user will disclose such information on a voluntary basis only. Certain services (GESIS series, data access, etc.) do require statement of person related information. It is left to you whether in fact to use these services.

This information is exclusively being used for the fulfilling of the requested services and the purpose of tailoring our services to your needs.

GESIS – Leibniz-Institute for the Social Sciences principally refrains from passing on anonymous or person related data to third parties.

Should you have submitted person related data to GESIS you may at any time file have this data deleted. Furthermore you are at any time entitled to request information regarding the stored data related to you. Facebook Plugin

Facebook Plugin

Our website uses social plugins (“plugins”) provided by the social network, operated by Facebook Inc., 1601 S. California Avenue, Palo Alto, CA 94304, USA (“Facebook”). The plugins are identifiable by a Facebook logo (white letter f on blue background or a thumb up icon) or the notice “Facebook Social Plugin”. For a full list of all social Plugins please see

When you visit a page of our website that contains a social plugin, your browser establishes a direct connection to Facebook servers. Facebook directly transfers the plugin content to your browser which embeds the latter into the website, enabling Facebook to receive information about your having accessed the respective page of our website. Thus we have no influence on the data gathered by the plugin and inform you according to our state of knowledge: The embedded plugins provide Facebook with the information that you have accessed the corresponding page of our website. If you are logged into Facebook, your visit can be assigned to your Facebook account. If you interact with the plugins, for example by clicking “Like”, or entering a comment, the corresponding information is transmitted from your browser directly to Facebook and stored by it. Even if you are not logged into Facebook, there is possibility that the plugins transmits your IP-address to Facebook.

For the information on the purpose and scope of data collection and procession by Facebook, as well as your rights in this respect and settings options for protecting your privacy please visit Facebook’s privacy policy: If you are a Facebook member and do not want Facebook to connect the data concerning your visit to our website with your member data already stored by Facebook, please log off Facebook before entering our website. Google Plus Plugin

Google Plus Plugin

Our website uses the "+1 Button ("G+ 1")" from the social network Google Plus which is run by Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States . The plugins are identifiable by the "+1" on a white or colored background. According to § 13 TMG ( "Tele Media Act), we point out that during the visit of our pages the plugin establishes a direct link between your browser and the Google server This connection is made regardless the "G+ 1" button is clicked or not. If you are not a member of Google Plus, there is still the possibility that Google will identify and store your IP address. If you are a member of Google+ and clicking the "G+ 1" button while you are logged into your Google Plus account, Google is able to identify your visit of our website and link it with your account at Google. If you wish to avoid that, please log out from your Google Plus account. We point out that we (as provider of our websites) don’t have any knowledge of the content of the data and the nature and extent of use by Google. For more information on the purpose, scope and use of the data collected by the company Google, please refer to the privacy policy of Google.

Legal validity of this disclaimer

This disclaimer is to be regarded as part of the content of the website containing a reference to this page. If any part or individual segment of this text is not or not not entirely or no longer in line with the relevant applicable legal regulations, the rest of the document shall remain in effect.