Purpose, Vision, & Mission

The purpose of PSP, Inc. is to strengthen relationships. Our vision is a world where 10 million people use their core strengths to make a difference every day. Through the elevation of individual and organisational performance, we help strengthen relationships around the world.

By having an uncompromising commitment to authenticity,
We generate trust everyday.

By growing profitably, professionally, and personally,
We create an environment where people thrive.

By developing the potential of every person,
We generate confidence in what can be.

By unleashing the power of choice,
We build communities where people integrate freedom and accountability.

By forming collaborative relationships,
We remain curious, innovative, and passionate in our work.

Everyday, we stay focused on our mission,
to enable individuals, teams, and organisations to deploy strengths productively.

We invite you to join us in creating a world where people use their core strengths to make a difference everyday.



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 colours. 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 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 concepts.

Our Thought Leaders

Meet the experts behind TotalSDI

PSP offers dynamic, compelling speakers skilled at weaving the themes of Leadership, Accountability and Strengths-based Teamwork into any TotalSDI Certification 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.