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We enhance individual and organizational performance through the application of Personality Theories.

Majors Personality Type Inventory (PTI)


Learn to use the most accurate Jungian instrument available today.  The MajorsPTIā„¢ provides scores for both preferences on each dimension not just a dimension score and it is less expensive than most other Jungian instruments currently available. The instrument provides two reports, a narrative report for the client and a numeric report for the facilitator.

Why Majors?  Because it is more accurate and less costly than our competition! The Majors Personality Type Inventory is available in both an on-line and self-scorable version that provides a basic 4-letter type code and scores for each preference. This assessment is designed to help facilitate your learning valuable information about how you direct your energy, take in information, make decisions, and how you orient to your environment.
If you are MBTI® qualified, you are eligible to purchase the assessment now!  

The cost is $10.95 per online assessment.  Volume discounts are offered:

Order over 9, the price is $9.95
Order over 100, the price is $8.95.

To purchase the online version of the PTI, set up your account now or call 800-456-6284.  After you sign up, we will email you log in information to purchase the assessment.  You cannot purchase the Majors PTI online assessment from our website.
If you are not MBTI® qualified, attend one of our certification programs so you may begin using this assessment.

Mark Majors, Ph.D., designed the Majors Assessments from decades of experience with instrument design. At CPP, he was a data analyst for the MBTI® Form M, and he directed the development of the MBTI® Form Q. Majors was also director of research at CAPT where he led research on MBTI® Step III and contributed to the Pearson-Marr Archetype Indicator (PMAI) and the Klein Group Indicator (KGI). In addition, he was the central data analyst and scoring developer for the 1994 Strong Interest Inventory.

Next Workshop

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Aug 19, 2015

Introducing the 8 Function-Attitude, 8 Archetypal Model

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Led By
Robert McAlpine, M.A. (ISTJ) Read Bio


"Wow, fantastic to have John Giannini presenting. You guys are running some wonderful sessions for Psychological Type - real cutting edge stuff that makes those of us as practitioners keep on our toes and question every facet of our understanding of Type not to mention the wonderful personal journey we are taking on as well. "

Marie Carmody
attended John Giannini Webinar