The foundation of the DiSC Model, as described by William Marston in his book, “The Emotions of Normal People,” was a circle as is represented in today’s Everything DiSC Profiles—the third generation DiSC Profile. The dot placement and shading in the circular model provides a clear visual of the continuous nature of DiSC in a more simple and intuitive manner that is incredibly straightforward and powerful.
What Is Changing?
Currently the Everything DiSC Profiles ask the participants to respond to 79 items on a 5-point likert scale determining how frequently each item or adjective describes them. That 79-item assessment will no longer be available after mid-July 2012 when Adaptive Testing (AT) will launch for any Everything DiSC assessment providing a new, more sophisticated scoring algorithm to give participants the most precise DiSC style assignment possible. Adaptive testing will maximize the precision of the style assignment, participant confidence and personalized feedback. Based on extensive validation research conducted by two independent agencies that specialize in psychometric testing, the AT measurement is 12% more accurate than the 79-item Everything DiSC profile and 32% more accurate than the DiSC Classic Profile.