Jay Douglas Haley was one of the founding figures of Problem-solving brief therapy and family therapy in general and of the strategic model of psychotherapy, and he was one of the more accomplished teachers, clinical supervisors, and authors in these disciplines.

Gregory Bateson was an English anthropologist, social scientist, linguist, visual anthropologist, semiotician, and cyberneticist whose work intersected that of many other fields. His writings include Steps to an Ecology of Mind (1972) and Mind and Nature (1979).