DiSC®

The DiSC^®, and any related instrument to it (e.g., DISC^®-360), appears to be widely used and well respected. It was developed from the original work of the psychologist William Marston. It is a quadrant behavioral model, and was originally correlated with the personality factors in Cattell’s 16 PF (personality factors). SYMLOG also correlates with numerous scales found in the factors of Cattell, the MMPI, Thurstone, and Couch.

The DiSC^® groups characteristics of behavior into four major styles. The four styles are:

D = Dominance/Drive
I = Influence/Inducement
S = Steadiness/Submission
C = Conscientiousness/Compliance

The D and I have aspects of extroversion, in the classical psychological use.
The S and C are classical attributes of introversion.
These can be seen as part of the U-D dimension in SYMLOG, but the words used between the two factors are neither opposite nor bi-polar, as in SYMLOG.

The D and C represent task-focused aspects of the personality (F-B dimension).
The I and S represent social aspects of the personality (P-N dimension).
This seems not unlike the many studies that look at concern for task/production vs. concern for people, or Theory X vs. Theory Y, that have been used since the early years of the discipline. Generally, these all measure in the SYMLOG PF quadrant, and represent the classic polarization between F and P in SYMLOG.

This four-quadrant model is essentially another example of classical four quadrant models that describe and label, but lack a measurement system, or underlying theoretical basis (field theory in the case of SYMLOG).