Leslie S. Greenberg

At a glance

Born 1945. South African-Canadian. Clinical Psychologist & Psychotherapy Researcher.

Active 1975 to present. Landmark year 1987. Clinical era: 1970 to 1989, cognitive, systemic and alliance.

Lineage: Humanistic, person-centred and existential. Roles: Modality founder or co-founder; Process and outcome researcher; Clinical theorist.

Associated modalities: Emotion-Focused Therapy (EFT); Process-Experiential Psychotherapy; Emotionally Focused Couple Therapy.

Primary originator of Emotion-Focused Therapy who integrated Carl Rogers's empathic attunement, Gestalt chair work, and rigorous process-outcome research on how emotion transforms emotion.

Review status: Educational draft, subject review pending. Source status: source checks not documented for this draft. Dates, sources and clinical statements require independent verification and specialist review.

Clinical overview

Leslie S. Greenberg is a South African-born Canadian clinical psychologist, Distinguished Research Professor Emeritus at York University in Toronto, and the primary architect of Emotion-Focused Therapy (EFT). Trained originally as a mechanical and industrial engineer at the University of the Witwatersrand in Johannesburg before immigrating to Canada in 1970, Greenberg completed his PhD in counselling psychology at York University under Carl Rogers's former student Laura North Rice.

Bringing an engineer's interest in fine-grained process analysis to humanistic psychotherapy, Greenberg set out to discover the exact moment-by-moment in-session sequences through which clients resolve inner splits and interpersonal injuries. Working first with his doctoral student Sue Johnson on Emotionally Focused Couple Therapy (1985/1988) and alongside Laura Rice, Jeremy Safran, and Robert Elliott on individual Process-Experiential / Emotion-Focused Therapy (1987/1993), he revitalised the humanistic-experiential tradition as an empirically validated treatment.

Historical and clinical context

By the late 1970s and 1980s, humanistic therapies (Rogerian client-centred therapy and Perlsian Gestalt therapy) were losing academic ground to cognitive-behavioural models that viewed emotion largely as a secondary by-product of post-cognitive appraisal. In Emotion in Psychotherapy (1987), Greenberg and Jeremy Safran reviewed clinical and experimental psychology and argued for a role for emotion in therapeutic change.

Crucially, Greenberg showed that not all in-session emotional expression is helpful. Clinicians must distinguish between 'primary adaptive', 'primary maladaptive', 'secondary reactive', and 'instrumental' emotions, and recognise specific client in-session 'markers' (such as self-critical splits or unfinished business) that indicate readiness for targeted experiential tasks.

Core therapeutic contributions

Differential Taxonomy of Emotion. Distinguished four clinical categories of emotion requiring different responses: (1) primary adaptive emotions (direct gut responses such as assertive anger at violation or sadness at loss, to be accessed for healthy action); (2) primary maladaptive emotions (core trauma-based shame or fear of abandonment, to be activated and transformed); (3) secondary reactive emotions (defensive anger masking hurt, or hopelessness masking anger, to be explored to reach the underlying primary emotion); and (4) instrumental emotions (used to influence others).

Changing Emotion with Emotion. Formulated and empirically tested the core change principle of EFT: a maladaptive emotion state (such as core shame or fear) is not undone merely by rational cognitive disputation, but by activating a subdominant, incompatible primary adaptive emotion (such as self-compassion or protective boundary-setting anger) alongside it.

Marker-Guided Task Analysis (Two-Chair and Empty-Chair Work). Studied patterns in therapeutic dialogue and developed tasks such as two-chair and empty-chair work for clients who may be struggling with self-criticism or unresolved relationships.

Co-Development of Emotionally Focused Couple Therapy. With Sue Johnson, Greenberg developed and studied an emotionally focused approach to couples therapy. Their 1985 outcome study and 1988 book describe early work; individual experiences and outcomes vary.

In the consulting room

Therapeutic stance. Empathic attunement paired with process-directive guiding; the therapist follows the client's moment-to-moment affective edge while actively proposing experiential tasks when specific markers emerge.

Signature practices. Listening beneath secondary reactive anger or numbing to help the client contact and symbolise bodily felt primary hurt, fear, or grief; Initiating Two-Chair Enactment when a client exhibits a harsh self-critical or self-interruptive split, asking them to speak directly as the critic and then switch chairs to respond from the experiencing self; Guiding Empty-Chair Dialogue for unresolved relational injuries, helping the client express both unmet childhood needs and legitimate boundary-setting anger toward an imagined attachment figure

Common misreadings. Assuming that emotion-focused therapy consists only of encouraging emotional expression, rather than considering how emotions are understood and processed; Trying to talk a client out of core maladaptive shame with logical arguments before the shame has been arrived at, validated, and met with a newly activated adaptive emotion

Landmark clinical works

1987, Emotion in Psychotherapy: Affect, Cognition, and the Process of Change (book). Co-authored with Jeremy D. Safran; foundational theoretical text integrating affect theory, cognitive science, and experiential psychotherapy.

1988, Emotionally Focused Therapy for Couples (book). Co-authored with Susan M. Johnson; classic text establishing Emotionally Focused Couple Therapy.

1993, Facilitating Emotional Change: The Moment-by-Moment Process (book). Co-authored with Laura N. Rice and Robert Elliott; defined Process-Experiential Psychotherapy and marker-guided task facilitation.

2002, Emotion-Focused Therapy: Coaching Clients to Work Through Their Feelings (book). Comprehensive clinical guide introducing the Emotion-Focused Therapy name and differential emotion processing.

Clinical critiques and limitations

Descriptions of therapeutic techniques are not evidence that a particular exercise is suitable or effective for every person; the cited sources do not establish individual outcomes.

Some classical client-centred purists argued that process-directive chair tasks depart from Carl Rogers's strictly non-directive attitude.

Clinical genealogy

Influences and mentors: Laura Rice; Carl Ransom Rogers; Friedrich Salomon Perls; Eugene Tovio Gendlin; Edward John Mostyn Bowlby.

Collaborators: Laura N. Rice; Robert Elliott; Sue Johnson; Jeremy D. Safran; Jeanne C. Watson; Rhonda N. Goldman.

Students and successors: Sue Johnson; Jeremy D. Safran; Jeanne C. Watson; Rhonda N. Goldman; Antonio Pascual-Leone; Ladislav Timulak.

Related reading

• ApproachesEmotion-focused and emotionally focused therapy (EFT)
• ApproachesPerson-centred therapy
• TimelineLeslie S. Greenberg and Jeremy D. Safran publish Emotion in Psychotherapy
• PeopleCarl Ransom Rogers
• PeopleFriedrich Salomon Perls
• PeopleEugene Tovio Gendlin
• PeopleEdward John Mostyn Bowlby
• PeopleSue Johnson
• PeopleJeremy D. Safran