Ego State Therapy

Roots in hypnotherapy and the Watkins model

A 2018 review by Abramowitz and Torem traces the historical roots of ego-state theory and describes how ego-state therapy evolved from classic hypnotherapy to modern methods. The authors note that these methods have been described by different authors under different names. They also suggest that core ideas about ego states and guided hypnotic dissociation may underlie the clinical effectiveness of many contemporary psychotherapies. That suggestion is the authors' view and is not tested in the review.

A 1995 article abstract by Phillips credits ego-state therapy to John and Helen Watkins and dates it to 1979. John Watkins later published a retrospective article (2009) on his experience with hypnosis from 1934, covering multiple personality, disputes among hypnosis societies and the development of hypnotic ego state therapy, with credit to his colleague and wife Helen Watkins. The retrospective is autobiographical, and both items were read here as abstracts only.

Combination with trauma methods

Later authors combined ego-state ideas with other methods. A 2001 article by Wade and Wade describes a framework joining ego-state therapy, clinical hypnosis and eye movement desensitization and reprocessing (EMDR), set within stages of psychosocial development. A 2018 Japanese-language article by Sugiyama states that the approach was first developed as a type of hypnotherapy and evolved into a method used together with trauma processing therapies, and it presents a case study.

Ego states and related terms

Wade and Wade describe the model's central assumption as personality organization that is dissociative as well as associative and consists of ego states. In their account, inappropriately activated ego states produce dysfunction, and treatment aims at an integrated 'family of self' with co-consciousness and negotiation among the states. These are concepts of the ego-state tradition and are not measured biomedical constructs.

A 2022 case report from Korea uses the word 'alters' for the separate identities of a patient with dissociative identity disorder, and describes the therapy's aim as connecting the memories of each state with the others while accepting differences between them. The same term, ego state, therefore appears in descriptions of everyday personality parts and in clinical accounts of dissociated identities, and readers should check which sense a source intends.

Terms used in trial reports

Trial reports from one research group use 'abreactive' ego state therapy for a format in which hypnotically activated reliving of a trauma is repeated and combined with the therapists' ego strengthening. 'Manualized' refers to a written treatment procedure. The comparison condition in one trial is called the Ochberg Counting Method and is labeled a placebo by the authors. These labels describe that research design and are not standard names for all ego state therapy.

Guided access to states in a published case

The 2022 case report describes a 16-year-old inpatient in whom hypnosis, with the patient's eyes closed, was used to explore an imagined space the clinician and patient named the 'Mind's Room'. Nine alternate identities were identified over time. When the patient became anxious, stabilization such as grounding and containment was used. Ego state therapy was one element among pharmacotherapy, psychoeducation, trauma-focused psychotherapy and family therapy, and the report is a description of one case and not a protocol.

Wade and Wade state that hypnosis provides techniques for accessing ego states and that assessment identifies the states responsible for dysfunctional reactions and those that might serve better. They describe an aim of corrective developmental experiences, resolution of grief and trauma, and negotiation among states.

The single-session abreactive format

The two trials discussed below tested a manualized single session lasting five to six hours, delivered with cotherapists, in which the trauma is repeatedly relived under hypnosis and the therapists add ego strength. Barabasz and colleagues describe abreactive hypnosis in this format as producing ego-state expression at physiologically and psychologically intense levels, followed by interpretation and reintegration. The sources do not show that this format is typical of ego state therapy as practiced elsewhere.

Trauma and posttraumatic stress

The most studied use is posttraumatic stress disorder, including combat stress injury and acute stress disorder. A 2013 review by Barabasz, who also led the trials, describes the single-session abreactive format as highly effective and durable and offers an explanation that it is emotion focused and activates subcortical structures. The explanation is the author's proposal and the abstract does not present a test of it.

Dissociative identity disorder and other uses

Case-based articles describe use for dissociative identity disorder, in the 2022 Korean case report and in Sugiyama's Japanese article on psychotherapy for multiple personality disorders. A 2003 article describes the ego state model applied to narcissistic personality disorder using case material. These items report single cases or clinical descriptions, and the abstracts reviewed do not include controlled outcome data for these conditions.

Two small placebo-controlled trials

Christensen and colleagues randomized 30 adults who met DSM-IV-TR and Clinician-Administered PTSD Scale criteria to a single abreactive ego state therapy session of five to six hours or to the Ochberg Counting Method as a placebo. At one-month and three-month follow-up the authors reported significant improvement in the ego state therapy group on the Davidson Trauma Scale, Beck Depression Inventory II and Beck Anxiety Inventory, in contrast to the placebo group.

A companion trial by Barabasz and colleagues treated 36 patients meeting PTSD checklist criteria, including combat stress injury and acute stress disorder. Both groups fell on the checklist right after treatment (placebo mean 17.34 points, ego state therapy mean 53.11 points as reported), but only the ego state therapy group kept a significant effect at the 4-week and 16- to 18-week follow-ups.

How the research is characterized

Hageman and Frederick examined the status of research in ego state therapy in 2013. They state that phenomenological studies, which draw on subjective experience, had until recently been the basis for standards of care and training, and they argue for combining phenomenological and evidence-based studies. This frames much of the published literature as clinical description and not controlled testing.

A PubMed search of the exact phrase 'ego state therapy' on 11 October 2026 returned 40 records. Among the records examined, the controlled trials found were the two above, and no systematic review specific to ego state therapy appeared. This was a single-database search and was not a systematic review, so other trials or reviews may exist.

Design and independence of the trials

Both trials are small, test a single long session of one variant, and compare it with a counting method labeled a placebo, not with a trauma-focused therapy used in clinical practice. Follow-up reached about three to four months. The abstracts name Barabasz, Barabasz and Watkins among the authors, so both trials and the 2013 review come from one group connected to the model's developer. In the records examined, no independent replication was identified. These points limit how far the results can be generalized, and they do not show that the findings are wrong.

Case-based literature

Most of the remaining articles reviewed are case reports, clinical descriptions or theory. In the 2022 case, ego state therapy was given with medication, psychoeducation, trauma-focused therapy and family therapy, so any improvement cannot be assigned to one component. The report also notes that the patient wanted to stop at times because the work carried heavy emotional responsibility, and that conflict and depression persisted after treatment.

Intensity and reported experiences

The abstracts of the two trials do not report adverse events, so the sources reviewed give no frequency of harm for the single-session format, and an absence of reports does not show that none occurred. Barabasz and colleagues describe the abreactive method as producing physiologically and psychologically intense expression of affect. The Korean case report describes stabilization techniques used when anxiety rose, which indicates that distress during sessions is anticipated by clinicians.

Hypnosis, memory and confidence

A 1997 review by Kihlstrom concluded that improved memory under hypnosis is illusory: suggestions to remember more increased false recollection and raised subjects' confidence in both true and false memories. It also stated that hypnotic age regression can be subjectively compelling but does not revive childhood memory, and it discouraged clinical and forensic use of hypermnesia and age regression to enhance memory. The review concerns hypnosis in general, was read as an abstract, and does not examine ego state therapy.

Suitability, assessment and training

The Korean report notes that dissociative identity disorder was initially diagnosed as schizophrenia, and its authors stress careful psychiatric assessment before treatment. This page is not a substitute for care. Anyone with trauma symptoms, hallucinations, self-harm or thoughts of suicide should seek assessment from a qualified clinician, or emergency services in a crisis, and should not delay or replace necessary care. The sources reviewed do not describe a register, protected title or formal training standard for ego state therapy, so none can be reported here.