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Log in to your QA account to access QS materials, review QA Resources, purchase and administer the IDI, and to generate IDI Individual and Group Profile Reports.

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Research and Publications
Interested in ways the IDI has been used in research? Explore a list of published studies using the IDI.
Help Center
Looking for more information about the IDI? We have more than 100 articles in our knowledge base that address a variety of IDI-related topics.