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Obtaining the data
1.Why are data available as "Packaged" if they are also in the Data Center? 
Before the Data Center was created, PSID data were distributed as "packaged" files. Because some users prefer the packaged files, we continue to provide data in this format.
2.How long are my data available for download after they are created? 
Data files are deleted from our servers when they are 7 days old. After that, you can re-create your data file by logging into the Data Center and selecting "Previous Carts".
3.The website seems to be displaying incorrectly, why is this? 
For security reasons, we are no longer supporting some older web browsers. Make sure your web browser is up-to-date, and please note that we suggest the following web browsers:

  • Google Chrome
  • Mozilla Firefox
  • Microsoft Edge (Windows only)
  • The latest version of Microsoft Internet Explorer (Windows only)

If you are using the latest version of Internet Explorer and are having display problems, click on Settings>Compatibility View Settings> and add psid.org to your list.

If problems persist, please contact us at psidhelp@umich.edu.