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The History of DiSC®

Learn how the DiSC® model evolved from early behavioral theory into the modern Everything DiSC® workplace assessment

The history of DiSC begins with early research on human behavior and has developed over decades into one of the most widely used workplace assessment models in the world. Today, the official Everything DiSC® assessment from Wiley is used to improve communication, leadership, teamwork, and workplace effectiveness.

Quick Answer:
The DiSC model originated with Dr. William Moulton Marston in the 1920s and was later developed into modern workplace assessments over several decades. The official Everything DiSC® platform used today is the result of continued research, refinement, and practical workplace application.

How did DiSC begin?

The original DISC model was developed by Dr. William Moulton Marston in the 1920s. In his book Emotions of Normal People, he explored human behavior and described a framework for understanding different personality and behavioral tendencies.

Although Marston did not create the modern assessment tools used today, his early work laid the foundation for what later became the DiSC model and the assessments that followed.

Key milestones in the history of DiSC

  • 1920s: Dr. William Moulton Marston develops the original DISC model and publishes Emotions of Normal People.
  • 1950s–1970s: Researchers begin applying and measuring DISC concepts in more formal ways, leading to early psychometric interpretations.
  • Early 1970s: John Geier develops the first DISC assessment, known as the Personal Profile System® (PPS), through Performax, which later became Inscape Publishing.
  • 1994: The PPS 2800 assessment is introduced and renamed DiSC® Classic. Its results are presented in a graphical format and it remains in use today.
  • Early 2000s: The Everything DiSC® series is launched by Inscape Publishing, using a circumplex format and expanded reporting.
  • 2007–2019: Additional profiles are introduced, including Workplace, Management, Sales, Work of Leaders, Productive Conflict, and Agile EQ.
  • 2020: The Everything DiSC® on Catalyst™ platform is launched.

Why does the history of DiSC matter?

Understanding the history of DiSC helps show why the model remains so relevant today. Over time, the original theory was refined into practical tools that organizations can use to strengthen communication, improve leadership, and build more effective teams.

The modern Everything DiSC assessment builds on this long history by combining behavioral theory with research-based reporting and workplace-focused development tools.

Emotions of Normal People book

DiSC Classic graph

DiSC circumplex image

Team meeting using DiSC
 

Why choose the official Everything DiSC® assessment?

The official Everything DiSC® assessment, developed by Wiley, builds on decades of behavioral research and practical workplace application. It provides research-validated insights and modern development tools for improving communication, leadership, and team effectiveness.

Explore Everything DiSC® Assessments

Frequently Asked Questions About the History of DiSC

Who created the original DiSC model?
The original DISC model was developed by Dr. William Moulton Marston in the 1920s.

Did William Moulton Marston create the modern DiSC assessment?
No. Marston created the original behavioral framework, while later researchers and developers created the assessments used today.

What was the first DiSC assessment?
The first formal DISC assessment was the Personal Profile System® (PPS), developed by John Geier.

What is Everything DiSC?
Everything DiSC is the modern workplace assessment series developed by Wiley that builds on the original DiSC behavioral model.

This content is provided by Your Life’s Path, a Wiley Platinum Award Winning Partner and a Top 10 Everything DiSC® Authorized Partner worldwide.