The tool uses only 28 items where the individual chooses 2 responses from 4 single word descriptions. They choose one word that is most like them and one word that is least like them.
The answers from these 28 questions then produce a report that is 23 pages in length – this raises a serious question about the quality of the information generated from these few words that are selected. How can such a long report honestly be produced from so little initial information?
"SUMMARY. The DiSC Classic is an easy-to-use, well-organized self-assessment of behavior responses to work environments. On the surface level, it appears that the instrument is useful in personal or professional development. However, the test suffers from questionable reliability and unknown validity. The measure is also remiss in its lack of reliability and validity for diverse ethnic/racial populations and professional occupations. Therefore, the use of the DiSC is not recommended. "