The Wisconsin Longitudinal Study

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The Wisconsin Longitudinal Study is part of the Center for Demography of Health and Aging at the University of Wisconsin, Madison.

Over the years, the Wisconsin Longitudinal Study has been supported by several government agencies and by private foundations, as well as by the University of Wisconsin.

Since the early 1990s, the WLS has been supported mainly by the National Institute on Aging, which is part of the National Institutes of Health and also by the Vilas Estate Trust, the National Science Foundation and the Spencer Foundation.


Welcome to the website of the Wisconsin Longitudinal Study, one of the most extensive and successful studies ever conducted in the social sciences. Click on "News and Findings" for interesting research based on WLS data.

We have a new Participant Report to share with you!

The latest round of interviews began in the Spring of 2010 and continued through the Fall of 2012. Instead of talking on the phone, we talked to participants in person. We met with the "graduates," that is the original class of 1957 participants, as well as the "siblings," a randomly selected brother or sister of the graduate, all of whom we've talked to before. Participant Report May 2014 [PDF] discusses many of the topics from the most recent interview and provides a summary of participant's responses.

If you are a WLS participant you should receive a printed copy of the report in May of 2014. If your copy does not arrive please let us know.

You can download copies of earlier reports below.

Brothers and Sisters: Findings from the Wisconsin Longitudinal Study  (January 2008)

The Class of 1957 at Age 65: A First Look (September 2006)

Wisconsin's Class of 1957 and their Families in the 1990s

The Class of 1957 - Eighteen Years after High School Graduation

If you have trouble viewing these reports you may need to first download a copy of Adobe Reader.


Enjoy the site, and thank you again for your time and participation.

- The staff and researchers at the Wisconsin Longitudinal Study.


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