About Mark S. Majors, Ph.D.
Dr. Mark S. Majors is a counseling psychologist with extensive psychometric credentials. His Ph.D. in Counseling Psychology and Multicultural Studies is from the University of Nebraska-Lincoln and he earned a MS and BS in Psychology (with distinction) from Iowa State University. He is the author and developer of the Majors Personality Type Inventory™ (MajorsPTI™), Majors Occupational Environment Measure™ (MajorsOEM™), Majors Elements of Personality Type™ (Majors Elements™), and the Majors SGI (Majors Spiritual Gifts Inventory). Mark also provided the data analysis on the 1994 Strong Interest Inventory, the MBTI® Form M and Form Q, as well as the development of the IRT scoring for the MBTI® Form Q, and coauthor for the MBTI® Form Q Manual. While a research scientist at Consulting Psychologists Press, he led the psychometric and scoring development of the Strong Interest Explorer.
