We envision a world where people have the power to improve every relationship in their lives by learning how to use their core strengths.

Relationships can be complex, but the good news is that making your talent more effective doesn’t have to be. Core Strengths is the only solution that helps you improve relationships, build better teams and coach for performance throughout your organization. Our assessments, training and platform enable you to actively shape the conversations that move businesses forward.

Since 1971 over three million people have taken the SDI assessment and have learned how to flexibly approach relationships for greater mutual success. Today it’s easier than ever to reinforce the Relationship Intelligence they’ve gained through our Core Strengths Platform, a revolution in talent development that helps people reach their highest potential through relationships.


Meet the experts behind Core Strengths

Core Strengths offers dynamic, compelling speakers skilled at weaving the themes of Leadership, Accountability and Strengths-based Teamwork into any Core Strengths event. They bring the latest research delivered with experience and knowledge to their speaking engagements, and each has worked with a diverse array of companies and audiences.

Tim Scudder Picture


Principal | Author

Mike Patterson Picture


Principal | Author

Steve Wood

Steve Wood

Director of Client Solutions | Master Facilitator

Lisa Graham

Lisa Graham

VP, Director of Client Relationships


In 1971, Elias Porter introduced the SDI and Relationship Awareness Theory to the world. His theory focuses on personal strengths and their underlying motivations as the key to understanding people and improving relationships. The SDI is the practical application of the theory and was the first personality assessment to use colors. The SDI has been used on every continent and is available in over 25 languages.

The theory behind the SDI first began to take shape in the 1950s when Elias Porter was part of the team that introduced client-centered therapy and the human potential movement. Porter worked closely with Carl Rogers at the University of Chicago, where he began working with personality assessments and was a contributor to Rogers’ client-centered concepts Porter’s earliest assessments were based on Erich Fromm’s descriptions of non-productive personalities, which were an advancement of Sigmund Freud’s counseling concepts.

Our Culture

Core Strength’s Culture Code is our vision for the company and the world we aspire to build every day. It’s not just a statement, it’s a commitment to our employees and customers that we can all “Work Better Together”. 

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