Psychology 

This tab shows you how to find information about tests and how to find the tests themselves. The majority of commercially available instruments must be purchased from publishers. Tests that are not commercially available may be found in books, journal articles, printed reports, or from the author. Finding scales and measures often requires thorough searching of print and electronic library resources.

Purchasing a specific test
If you have the name of the test, determine the publisher by using the reference books and databases listed in this guide. Commercial tests must be purchased through the publisher.

Purchasing a test in a subject area
If you are looking for a type of commercial test (such as a scale that you can use to measure depression in adolescents and any will do) consider a company that makes a wide variety of tests available for a fee: