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Reliability and Validity of DiSC®

Before purchasing and implementing a new assessment, the first question one would normally ask is, “Does it work?”

With Everything DiSC® assessments, you can trust that the answer is an unequivocal “Yes!”

Updated, improved, and validated over more than 40 years of research, Everything DiSC has also been subjected to rigorous and careful psychometric analysis, testing, and development. It is the leading personal assessment tool used by more than 40 million people to improve work productivity, teamwork, and communication.

Want the proof?

About Everything DiSC: Theory and Research is a 7-page summary report that explains how the DiSC model was developed and provides information on its scales as well as validity and reliability data.  

Research Report for Adaptive Testing is 72-page report that includes background and research on the assessment, specifically on the Everything DiSC assessment, the DiSC® scales that are derived from this information, and the circumplex representation of the model. It also provides research on the application-specific models used in Everything DiSC Management, Everything DiSC Sales, Everything DiSC Workplace®, Everything DiSC Work of Leaders®,Everything DiSC Productive Conflict, and Everything DiSC Agile EQ.