The Ennneagram & PAEI series of tests was created and continues to be developed by Yechezkel Madanes. Yechezkel is a trained sociologist, social anthropologist and economist who also holds a masters degree in Finance. He is a personality type expert with numerous Enneagram books that are highly acclaimed and that were endorsed by some of the world’s leading authorities in the fields of psychology, management, coaching and neuroscience. He worked and collaborated extensively with Tony Robbins and Cloe Madanes, and with Dr.Ichak Adizes. Yechezkel is an official licensee of the International Association of Coaching (IAC) and is the Head of the IAC’s Research Department. Speaking four languages, he is a corporate trainer with over 25 years of experience working with companies around the world and c0aching executives in all time zones.