[2] His research has addressed questions regarding empathy, psychotherapy process, the therapeutic alliance, and emotion in human functioning.
[1][2] With his mentor Laura North Rice, who had studied with Carl Rogers at the University of Chicago, he began doing psychotherapy process research, attempting to mathematically model therapist–client interactions and using techniques of task analysis.
[1] He was also influenced early in his career by Juan Pascual-Leone's neo-Piagetian constructivist model of mind.
[1] His first academic position was at the University of British Columbia in counseling psychology, and he completed an externship at the Mental Research Institute in California in 1981.
[1] Greenberg has published numerous articles and co-authored the major books on emotion-focused approaches to psychotherapy.