Integrative psychotherapy is the integration of elements from different schools of psychotherapy in the treatment of a client. Integrative psychotherapy may also refer to the psychotherapeutic process of integrating the personality: uniting the "affective, cognitive, behavioral, and physiological systems within a person".^[1]

Initially, Sigmund Freud developed a talking cure called psychoanalysis; then he wrote about his therapy and popularized psychoanalysis. After Freud, many different disciplines splintered off. Some of the more common therapies include: psychodynamic psychotherapy, transactional analysis, cognitive behavioral therapy, gestalt therapy, body psychotherapy, family systems therapy, person-centered psychotherapy, and existential therapy. Hundreds of different theories of psychotherapy are practiced.^[2]

A new therapy is born in several stages. After being trained in an existing school of psychotherapy, the therapist begins to practice. Then, after follow up training in other schools, the therapist may combine the different theories as a basis of a new practice. Then, some practitioners write about their new approach and label this approach with a new name.

A pragmatic or a theoretical approach can be taken when fusing schools of psychotherapy. Pragmatic practitioners blend a few strands of theory from a few schools as well as various techniques; such practitioners are sometimes called eclectic psychotherapists and are primarily concerned with what works. Alternatively, other therapists consider themselves to be more theoretically grounded as they blend their theories; they are called integrative psychotherapists and are not only concerned with what works, but also why it works.^[3]

For example, an eclectic therapist might experience a change in their client after administering a particular technique and be satisfied with a positive result. In contrast, an integrative therapist is curious about the "why and how" of the change as well. A theoretical emphasis is important: for example, the client may only have been trying to please the therapist and was adapting to the therapist rather than becoming more fully empowered in themselves.

The most recent edition of the Handbook of Psychotherapy Integration (Norcross & Goldfried, 2005) recognized four general routes to integration: common factors, technical eclecticism, theoretical integration, and assimilative integration.^[4]

The first route to integration is called common factors and "seeks to determine the core ingredients that different therapies share in common".^[5] The advantage of a common factors approach is the emphasis on therapeutic actions that have been demonstrated to be effective. The disadvantage is that common factors may overlook specific techniques that have been developed within particular theories. Common factors have been described by Jerome Frank,^[6] Bruce Wampold,^[7] and Miller, Duncan and Hubble (2005). Common factors theory asserts it is precisely the factors common to the most psychotherapies that make any psychotherapy successful.

Some psychologists have converged on the conclusion that a wide variety of different psychotherapies can be integrated via their common ability to trigger the neurobiological mechanism of memory reconsolidation in such a way as to lead to deconsolidation.^[8]

The second route to integration is technical eclecticism which is designed "to improve our ability to select the best treatment for the person and the problem…guided primarily by data on what has worked best for others in the past".^[9] The advantage of technical eclecticism is that it encourages the use of diverse strategies without being hindered by theoretical differences. A disadvantage is that there may not be a clear conceptual framework describing how techniques drawn from divergent theories might fit together. The most well known model of technical eclectic psychotherapy is Arnold Lazarus' (2005) multimodal therapy. Another model of technical eclecticism is Larry E. Beutler and colleagues' systematic treatment selection. ^[10]

The third route to integration commonly recognized in the literature is theoretical integration in which "two or more therapies are integrated in the hope that the result will be better than the constituent therapies alone".^[11] Some models of theoretical integration focus on combining and synthesizing a small number of theories at a deep level, whereas others describe the relationship between several systems of psychotherapy. One prominent example of theoretical synthesis is Paul Wachtel's model of cyclical psychodynamics that integrates psychodynamic, behavioral, and family systems theories.^[12] Another example of synthesis is Anthony Ryle's model of cognitive analytic therapy, integrating ideas from psychoanalytic object relations theory and cognitive psychotherapy.^[13] Another model of theoretical integration is specifically called integral psychotherapy (Forman, 2010; Ingersoll & Zeitler, 2010). The most notable model describing the relationship between several different theories is the transtheoretical model.^[14]

Assimilative integration is the fourth route and acknowledges that most psychotherapists select a theoretical orientation that serves as their foundation but, with experience, incorporate ideas and strategies from other sources into their practice. "This mode of integration favors a firm grounding in any one system of psychotherapy, but with a willingness to incorporate or assimilate, in a considered fashion, perspectives or practices from other schools".^[15] Some counselors may prefer the security of one foundational theory as they begin the process of integrative exploration. Formal models of assimilative integration have been described based on a psychodynamic foundation,^[16] and based on cognitive behavioral therapy.^[17]

Govrin (2015) pointed out a form of integration, which he called "integration by conversion", whereby theorists import into their own system of psychotherapy a foreign and quite alien concept, but they give the concept a new meaning that allows them to claim that the newly imported concept was really an integral part of their original system of psychotherapy, even if the imported concept significantly changes the original system. Govrin gave as two examples Heinz Kohut's novel emphasis on empathy in psychoanalysis in the 1970s and the novel emphasis on mindfulness and acceptance in "third-wave" cognitive behavioral therapy in the 1990s to 2000s.

In addition to well-established approaches that fit into the five routes mentioned above, there are newer models that combine aspects of the traditional routes.

Clara E. Hill's (2014) three-stage model of helping skills encourages counselors to emphasize skills from different theories during different stages of helping. Hill's model might be considered a combination of theoretical integration and technical eclecticism. The first stage is the exploration stage. This is based on client-centered therapy. The second stage is entitled insight. Interventions used in this stage are based on psychoanalytic therapy. The last stage, the action stage, is based on behavioral therapy.

Good and Beitman (2006) described an integrative approach highlighting both core components of effective therapy and specific techniques designed to target clients' particular areas of concern. This approach can be described as an integration of common factors and technical eclecticism.

Multitheoretical psychotherapy^[18] is an integrative model that combines elements of technical eclecticism and theoretical integration. Therapists are encouraged to make intentional choices about combining theories and intervention strategies.

An approach called integral psychotherapy^[19] is grounded in the work of theoretical psychologist and philosopher Ken Wilber (2000), who integrates insights from contemplative and meditative traditions. Integral theory is a meta-theory that recognizes that reality can be organized from four major perspectives: subjective, intersubjective, objective, and interobjective. Various psychotherapies typically ground themselves in one of these four foundational perspectives, often minimizing the others. Integral psychotherapy includes all four. For example, psychotherapeutic integration using this model would include subjective approaches (cognitive, existential), intersubjective approaches (interpersonal, object relations, multicultural), objective approaches (behavioral, pharmacological), and interobjective approaches (systems science). By understanding that each of these four basic perspectives all simultaneously co-occur, each can be seen as essential to a comprehensive view of the life of the client. Integral theory also includes a stage model that suggests that various psychotherapies seek to address issues arising from different stages of psychological development.^[20]

The generic term, integrative psychotherapy, can be used to describe any multi-modal approach which combines therapies. For example, an effective form of treatment for some clients is psychodynamic psychotherapy combined with hypnotherapy. Kraft & Kraft (2007) gave a detailed account of this treatment with a 54-year-old female client with refractory IBS in a setting of a phobic anxiety state. The client made a full recovery and this was maintained at the follow-up a year later.

There are several principles of interactive therapy that reflect its adaptive, client-centered approach. These principles are intended to guide therapists in selecting, applying, and adapting therapeutic methods to meet the unique needs of each client, promoting a flexible and holistic approach to mental health care.

The therapeutic relationship is central to integrative therapy, where the therapist and client work as partners in the healing process. Integrative therapy emphasizes mutual respect, empathy, and understanding, believing that meaningful change is more likely to occur within a trusting and collaborative environment. This alliance empowers clients to take an active role in their therapy thereby enhancing motivation, engagement, and the long-term effectiveness of treatment.^[21][22][23]

A defining principle of integrative therapy is its flexibility in responding to clients’ immediate needs. Therapists trained in integrative methods prioritize adaptability, tailoring interventions in real time to suit a client's progress, life changes, and therapeutic goals. This responsiveness allows for a fluid treatment process, as opposed to rigid adherence to any single theoretical approach.^[24]

Integrative therapy advocates for a holistic perspective on mental health, recognizing that emotional well-being is influenced by a combination of biological, psychological, and social factors. Therapists aim to address the whole person—rather than just symptoms—by considering lifestyle, relational dynamics, cultural background, and environmental influences. This comprehensive focus supports an individualized approach, acknowledging that healing can be facilitated by understanding the person in context.^[25]

An integrative approach encourages therapists to remain open to new ideas, personal growth, and professional development. Given that integrative therapy draws from multiple frameworks, therapists often undergo ongoing education to refine their skills and integrate new evidence-based practices. This commitment to self-improvement not only enhances therapeutic effectiveness but also models a growth-oriented mindset for clients.^[26]

In Integrative and Eclectic Counselling and Psychotherapy,^[27] the authors make clear the distinction between integrative and eclectic psychotherapy approaches: "Integration suggests that the elements are part of one combined approach to theory and practice, as opposed to eclecticism which draws ad hoc from several approaches in the approach to a particular case." Psychotherapy's eclectic practitioners are not bound by the theories, dogma, conventions or methodology of any one particular school. Instead, they may use what they believe or feel or experience tells them will work best, either in general or suiting the often immediate needs of individual clients; and working within their own preferences and capabilities as practitioners.^[28]

• Integrative body psychotherapy
• Journal of Psychotherapy Integration

• Beutler, L. E., Consoli, A. J. & Lane, G. (2005). Systematic treatment selection and prescriptive psychotherapy: an integrative eclectic approach. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 121–143). New York: Oxford.
• Brooks-Harris, J. E. (2008). Integrative Multitheoretical Psychotherapy. Boston: Houghton-Mifflin.
• Castonguay, L. G., Newman, M. G., Borkovec, T. D., Holtforth, M. G. & Maramba, G. G. (2005). Cognitive-behavioral assimilative integration. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 241–260). New York: Oxford.
• Ecker, B., Ticic, R., Hulley, L. (2012). Unlocking the Emotional Brain: Eliminating Symptoms at Their Roots Using Memory Reconsolidation. New York: Routledge.
• Forman, M. D. (2010). A Guide to Integral Psychotherapy: Complexity, Integration, and Spirituality in Practice. Albany, NY: SUNY Press.
• Frank, J. D. & Frank, J. B. (1991). Persuasion and Healing: A Comparative Study of Psychotherapy (3rd ed.). Baltimore, MD: Johns Hopkins University.
• Frank, K. A. (1999). Psychoanalytic Participation: Action, Interaction, and Integration. Mahwah, NJ: Analytic Press.
• Good, G. E. & Beitman, B. D. (2006). Counseling and Psychotherapy Essentials: Integrating Theories, Skills, and Practices. New York: W. W. Norton.
• Govrin, A. (2015). Blurring the threat of 'otherness': integration by conversion in psychoanalysis and CBT. Journal of Psychotherapy Integration, 26(1): 78–90.
• Hill, C. E. (2014). Helping Skills: Facilitating Exploration, Insight, and Action (4th ed.). Washington, DC: American Psychological Association.
• Ingersoll, E. & Zeitler, D. (2010). Integral Psychotherapy: Inside Out/Outside In. Albany, NY: SUNY Press.
• Kraft T. & Kraft D. (2007). Irritable bowel syndrome: symptomatic treatment approaches versus integrative psychotherapy. Contemporary Hypnosis, 24(4): 161–177.
• Lane, R. D., Ryan, L., Nadel, L., Greenberg, L. S. (2015). Memory reconsolidation, emotional arousal and the process of change in psychotherapy: new insights from brain science. Behavioral and Brain Sciences, 38: e1.
• Lazarus, A. A. (2005). Multimodal therapy. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 105–120). New York: Oxford.
• Messer, S. B. (1992). A critical examination of belief structures in integrative and eclectic psychotherapy. In J. C. Norcross, & M. R. Goldfried, (Eds.), Handbook of Psychotherapy Integration (pp. 130–165). New York: Basic Books.
• Miller, S. D., Duncan, B. L., & Hubble, M. A. (2005). Outcome-informed clinical work. In J. C. Norcross, & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 84–102). New York: Oxford.
• Norcross, J. C. (2005). A primer on psychotherapy integration. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 3–23). New York: Oxford.
• Norcross, J. C. & Goldfried, M. R. (Eds.) (2005). Handbook of Psychotherapy Integration (2nd ed.). New York: Oxford.
• Prochaska, J. O. & DiClemente, C. C. (2005). The transtheoretical approach. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 147–171). New York: Oxford.
• Ryle, A. (2005). Cognitive analytic therapy. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 196–217). New York: Oxford.
• Stricker, G. & Gold, J. (2005). Assimilative psychodynamic psychotherapy. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 221–240). New York: Oxford.
• Wachtel, P. L., Kruk, J. C., & McKinney, M. K. (2005). Cyclical psychodynamics and integrative relational psychotherapy. In J. C. Norcross & M. R. Goldfried (Eds.), Handbook of Psychotherapy Integration (2nd ed., pp. 172–195). New York: Oxford.
• Wampold, B. E. & Imel Z. E. (2015). The Great Psychotherapy Debate: The Evidence for What Makes Psychotherapy Work (2nd ed.). New York: Routledge.
• Welling, H. (June 2012). Transformative emotional sequence: towards a common principle of change. Journal of Psychotherapy Integration, 22(2): 109–136.
• Wilber, K. (2000). Integral Psychology: Consciousness, Spirit, Psychology, Therapy. Boston: Shambhala.
• Woolfe, R. & Palmer, S. (2000). Integrative and Eclectic Counselling and Psychotherapy. London; Thousand Oaks, CA: Sage Publications.
• Žvelc, G. & Žvelc, M. (2021). Integrative psychotherapy: A mindfulness- and compassion-oriented approach. Routledge.

• Fromme, D. K. (2011). Systems of Psychotherapy: Dialectical Tensions and Integration. New York: Springer.
• Magnavita, J. J. & Anchin, J. C. (2014). Unifying Psychotherapy: Principles, Methods, and Evidence from Clinical Science. New York: Springer.
• Prochaska, J. O. & Norcross, J. C. (2018). Systems of Psychotherapy: A Transtheoretical Analysis (9th ed.). New York: Oxford.
• Scaturo, D. J. (2005). Clinical Dilemmas in Psychotherapy: a Transtheoretical Approach to Psychotherapy Integration. Washington, DC: American Psychological Association.
• Schneider, K. J. (Ed.) (2008). Existential-Integrative Psychotherapy: Guideposts to the Core of Practice. New York: Routledge.
• Schneider, K. J. & Krug, O.T. (2010). Existential-Humanistic Therapy. Washington, DC: American Psychological Association.
• Stricker, G. & Gold, J. R. (2006). A Casebook of Psychotherapy Integration. Washington, DC: American Psychological Association.
• Urban, W. J. (1978) Integrative Therapy: Foundations of Holistic and Self Healing. Los Angeles: Guild of Tutors Press.

• The Problem of Psychotherapy Integration by Tullio Carere
• The Rise of Integrative Psychotherapy by John Söderlund
• Society for the Exploration of Psychotherapy Integration
• International Integrative Psychotherapy Association
• Institute for Integrative Psychotherapy and Counselling, Ljubljana
• International Journal of Integrative Psychotherapy