Development Dimensions International history

1971: The Law and Personnel Testing, by William C. Byham and Morton Spitzer, is the first book explaining EEOC regulations on personnel selection.

Speaking of assessment: In 1972, Bill Byham founded the International Congress on the Assessment Center Method.

40+ years of research on Interaction Management®. (Pictured) 1974, DDI’s Key Principles are at the heart of IM. “Maintain or Enhance Self-esteem” is just one of our KP’s that have been impacting leaders since televisions were square.

1988 Service Plus® introduced, the first program to train employees and leaders to strengthen customer service skills and culture.

1991: Empowered Teams, by Richard Wellins, William Byham, and Jeanne Wilson is published.

2001: Second Leadership Forecast research is completed.

2005: Fourth Leadership Forecast research completed.

2007: 70 The New 50 by William Byham is published

2010: Time for a Leadership Revolution, the sixth Global Leadership Forecast is completed.

2012: Third Global Selection Forecast research completed.

2014: Shenzhen office opens.

2016: Third High-Resolution Leadership Study published with powerful data on how leaders impact financial growth and execute economic turnaround.

2017: Eighth Global Leadership Forecast research published.

2020: Creating value for our clients with DDI’s leadership development Subscriptions, everything you need for personalized blended learning experiences.

2021: Winner of Human Resource Director’s 5-Star Learning and Development Awards in the L&D Training Provider category.