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Privacy Policy

The following discloses our information gathering and dissemination practices for this web site ( and the CLER subject pool application linked from

Information gathering

Our web server software generates logfiles of the IP addresses of computers that access this web site and of what files they access. These web server logs are retained on a temporary basis and then deleted completely from our systems. We also ask our visitors who wish to participate in CLER experimental sessions to provide information about themselves, in the form of a user profile. We may use cookies to maintain a user's identity between web sessions.

Use of information

Personally identifiable information is gathered for two purposes: recruiting for experiments and payment processing. Other than as necessary for these purposes, we do not provide any personally identifiable information we gather or develop about our visitors to any third parties for any purpose. Please note that the Internal Revenue Service (IRS) requires the reporting of any individual who earns more than $600 from Harvard University in a calendar year. Such individuals may be subject to tax on their earnings. We use your IP address and files you access to help diagnose problems with our server and to administer our Web site by identifying (1) which parts of our site are most heavily used, and (2) which portion of our audience comes from within the Harvard network. We also use this information to tailor site content to user needs, and to generate aggregate statistical reports. At no time do we disclose site usage by individual visitors.


This site has security measures in place to protect the loss, misuse and alteration of the information under our control, including the encryption of all information submitted through a secure ("https") connection.

Contacting this web site

If you have any questions about this privacy statement, the practices of this site, or your dealings with this site, you can contact: This web site may contain links to other web sites. We are not responsible for the privacy practices or the content of such web sites.

Changes to this policy

An announcement of any changes to this policy will be posted prominently on the first page of our web site for three months before any changes go into effect.

Effective date

The effective date of this policy was March 16, 2009.