The DiSC personality test is a popular four-factor model of human behavior. DiSC identifies four primary styles:
Once people understand their own personality type, they can learn to recognize other people's styles. The final step of DiSC awareness is learning to flex one's behavior so as to increase engagement with others and develop more constructive workplace relationships.
The DiSC personality test was originally developed by Dr. William Marston in the 1920s. In the 1970s, Dr. John Geier followed Marston's work and developed a 28-question DiSC test so that people could identify their own styles. Today, Wiley Publishing owns the DiSC personality test and has created a variety of assessments, reports, facilitation materials, and other products to support DiSC training programs.