Jeffery is a scientist, technologist, entrepreneur, and investor who focuses on advancing the highest forms of human wellbeing. For over a decade he has conducted the largest international study into ongoing and persistent forms of non-symbolic experience (ONE/PNSE), which includes the types of consciousness commonly known as: enlightenment, nonduality, the peace that passeth understanding, unitive experience, and hundreds of other terms. Publicly Jeffery often refers to these as "Fundamental Wellbeing." His research resulted in the first reliable, cross-cultural and pan-tradition classification system for these types of experience. More recently, he has used this research to make protocols and information available that help people obtain profound psychological benefits in a rapid, secular, reliable, and safe way.