In PAIRIN’s continued commitment to improvement, our research recently identified an opportunity for some changes that would result in a better reflection of the original science. Our science is rooted in The Adjective Check List (ACL) by Dr. Harrison Gough, which was created in 1949 to measure attributes of relating, thinking, motivation and character. We are committed to keeping our algorithms linked to this well-researched, validated science which serves as the foundation for PAIRIN’s tools.