The *Mental Measurements Yearbook* is a reference book that offers descriptive information and critical reviews of proprietary psychological measures. Researchers consult this resource to evaluate and obtain commercially published tests, such as clinical or personality inventories, for use in their studies.

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A proprietary measure is an existing psychological assessment where a publisher owns the legal rights to the tool, requiring researchers to purchase it prior to use. These instruments are particularly common in clinical psychology applications and include standard intelligence tests as well as major assessments like the Beck Depression Inventory and the Minnesota Multiphasic Personality Inventory (MMPI).

Proprietary Measure

https://kpu.pressbooks.pub/psychmethods4e/

KPU Research Methods in Psychology - 4th American Edition

*Tests in Print* is a reference book that provides detailed information about proprietary psychological measures that are commercially available. Researchers use this resource to find details about tests that require purchase, such as standard intelligence tests or clinical inventories, and to learn how to obtain them.

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