The Detection of Dissociative Identity Disorder by Northern Irish Clinical Psychologists and Psychiatrists: A Clinical Vignettes Study

ABSTRACT

A sample of Northern Irish clinical psychologists (N = 27) and psychiatrists (N = 29) completed three clinical vignettes designed to assess the detection of dissociative identity disorder. Data suggested that psychiatrists and clinical psychologists were better able to detect dissociative identity disorder when discriminating and characteristic symptoms were present. However, the majority of clinicians still failed to diagnose dissociative identity disorder as the most likely condition in a clear-cut case.     

SCL-90-R Norms for Dissociative Identity Disorder

ABSTRACT

Norms for dissociative identity disorder (DID) have been provided for a variety of structured interviews, self-report measures and computer-scored instruments. The SCL-90-R is a widely used self-report measure of general psychopathology, but prior to this report norms for DID were not available. The authors provide scores on the SCL-90-R for 101 participants with DID at baseline, and for 36 of the participants on two-year follow-up.     

The Axis-I Dissociative Disorder Comorbidity of Borderline Personality Disorder Among Psychiatric Outpatients

ABSTRACT

The aim of this study was to determine the frequency of dissociative disorders among psychiatric outpatients with borderline personality disorder (BPD). In order to ascertain the extent of the overlap between two diagnostic groups, the overall prevalence of both disorders were evaluated. Two hundred and forty (240) consecutive patients who presented to a university outpatient psychiatry unit were screened using the self-report questionnaire version of the BPD section of Structured Clinical Interview for DSM-III-R Personality Disorders (SCID-II), the Dissociative Experiences Scale (DES) and the Somatoform Dissociation Questionnaire (SDQ). One hundred and twenty-nine (129) participants who had a score above the cut-off point on at least one of these instruments were evaluated using the interview version of the BPD section of the SCID-II, the Dissociative Disorders Interview Schedule (DDIS), and the PTSD module of the Structured Clinical Interview for DSM-III-R (SCID-I). All participants who were diagnosed as having BPD or a dissociative disorder were evaluated then with the Structured Clinical Interview for DSM-IV Dissociative Disorders (SCID-D). Twenty-five (25; 10.4%) participants had BPD and 33 participants (13.8%) had dissociative disorder in the final evaluation. Sixteen participants (64.0%) with BPD had the Axis I diagnosis of a dissociative disorder; all six participants (2.5%) with dissociative identity disorder were among them. The findings demonstrate that a significant part of psychiatric outpatients who fit the criteria of BPD have a DSM-IV dissociative disorder on Axis I. The presence of dissociative symptoms as a part of BPD should not lead to overlooking the possibility of a co-occurring dissociative disorder.     

Dissociation and Schizophrenia

Abstract

Comorbidity of psychotic and dissociative disorders often is not reported. This 38 year-old female with a history of schizophrenic symptoms displayed evidence of dissociative identity disorder (DID) during admission to an inpatient psychiatric unit. The case illustrates how the presence of a dissociative disorder may influence the presentation of a co-morbid psychosis. The historical association and differential diagnosis between DID and schizophrenia is described. Implications of various treatment approaches for patients exhibiting dissociation in the context of psychosis are discussed.     

Evidence for a Dissociative Subtype of Post-Traumatic Stress Disorder Among Help-Seeking Childhood Sexual Abuse Survivors

ABSTRACT

This study examined evidence for a dissociative subtype of post-traumatic stress disorder (PTSD) among women seeking psychotherapy for childhood sexual abuse (CSA). One hundred and twenty-two women seeking treatment for CSA completed a battery of questionnaires assessing PTSD, dissociative symptoms, and child maltreatment. Using signal detection analysis, we identified high and low dissociation PTSD subgroups. A constellation of three PTSD symptoms-hypervigilance, sense of foreshortened future, and sleep difficulties–discriminated between these two subgroups (OR = 8.15). Further evidence was provided by the finding of a nonlinear relationship between severity of childhood maltreatment and dissociation in the women with PTSD. These results provide support for a dissociative subtype of PTSD that may stem from more severe childhood experiences of neglect and abuse.     

Assessment of Genuine and Simulated Dissociative Identity Disorder on the Structured Interview of Reported Symptoms

ABSTRACT

Little is known about how to detect malingered dissociative identity disorder (DID). This study presents preliminary data from an ongoing study about the performance of DID patients on the Structured Interview of Reported Symptoms (SIRS, Rogers, Bagby, & Dickens, 1992), considered to be a “gold standard” structured interview in forensic psychology to detect feigning of psychological symptoms. Test responses from 20 dissociative identity disorder (DID) patients are compared to those of 43 well informed and motivated DID simulators. Both the simulators and DID patients endorsed such a high number of symptoms that their average overall scores would typically be interpreted as indicative of feigning. The simulators' mean scores were significantly higher than those of the DID patients on only four out of 13 scales. These results provide preliminary evidence that well informed and motivated simulators are able to fairly successfully simulate DID patients and avoid detection on the SIRS. Furthermore, many DID patients may be at risk for being inaccurately labeled as feigning on the SIRS.     

Dissociation and Meditation

ABSTRCT

The purpose of the current paper is to compare meditational and dissociative states in terms of their effects on consciousness, attention, affect, cognition, identity, and pain sensitivity. To illustrate these dimensions of dissociation, a case example is presented of a veteran with combat-related posttraumatic stress disorder who had particularly severe dissociation symptoms. The Classical Yoga literature is reviewed to examine these dimensions as they pertain to meditational states. Although dissociative and meditational states can involve alterations in consciousness, attention, affect, cognition, identity, and pain sensitivity, the nature of changes in these two states is distinct. Applications of meditation in treatment contexts have made use of some of the powerful techniques for attention control but do not incorporate the full range of practices because of the secular setting of treatment and the goal of symptom relief. The use of meditation as a treatment for dissociation has not been systematically evaluated.     

Hypnosis and Traumatic Dissociation: Therapeutic Opportunities

ABSTRACT

Hypnosis and the related phenomenon of dissociation have long been linked to trauma. Evidence is reviewed regarding the relationship between trauma and dissociation, the prevalence of these dissociative symptoms in the acute aftermath of trauma, and their salience in predicting the development of later PTSD symptoms. The evidence reviewed regarding the prevalence of dissociative and other symptoms in the immediate aftermath of trauma formed the basis for including Acute Stress Disorder (ASD) as a new diagnosis in the DSM-IV. Dissociative amnesia is described as the key commonality between formally induced hypnosis and dissociative symptomatology, and controversy regarding traumatic amnesia is discussed. Finally principles of psychotherapy involving hypnosis and related techniques for dissociative and other post-traumatic symptoms are reviewed.     

Investigating Cognitive Inhibition in Dissociative Identity Disorder Compared to Depression,Posttraumatic Stress Disorder and Psychosis

ABSTRACT

Cognitive inhibition refers to the mental capacity to suppress distracting stimuli that compete with target stimuli for processing resources. Using neutral word stimuli in a flanker task, a recent study suggested that dissociative identity disorder (DID) is characterized by weakened cognitive inhibitory functioning (Dorahy, Irwin, & Middleton, 2002). The current study used single digit stimuli in the flanker task and tested cognitive inhibitory ability in samples with DID, depression, posttraumatic stress disorder and psychosis. The DID, depressed and PTSD groups displayed no evidence of weakened cognitive inhibitory functioning. Consistent with previous research, however, the psychosis sample displayed a reduced capacity to engage in cognitive inhibition. Cognitive inhibitory ability was not related to measures of dissociation, childhood traumatic experience or schizotypy. Results are discussed in terms of the positive symptoms of schizophrenia and the nature of stimuli used in the flanker task.     

Evidence for phase-based psychotherapy as a treatment for dissociative identity disorder comorbid with major depressive disorder and alcohol dependence

We report on the treatment and successful outcome of a 58-year-old Native American male with a history of complex trauma presenting with dissociative identity disorder (DID) and major depressive disorder. The treatment included a trauma-informed phase-based psychotherapy as recommended by the International Society for the Study of Trauma and Dissociation for treating DID. We assessed symptoms at baseline and at three additional time points over the course of 14 months. We utilized the Reliable Change Index to examine statistically significant change in symptoms over the course of treatment. Significant symptom improvements were realized posttreatment across all measured domains of functioning, including dissociative symptoms, alcohol abuse, depression, anxiety, and emotion regulation skills. Moreover, the client no longer met criteria for DID, major depressive disorder, or alcohol abuse. Results are discussed in terms of the effectiveness of trauma-focused, phase-based treatment for DID for cases of complex trauma with comorbid disorders.     

Comparing the symptoms and mechanisms of “dissociation” in dissociative identity disorder and borderline personality disorder

A total of 75 patients were diagnosed with the Structured Clinical Interview for DSM–IV Dissociative Disorders–Revised as having dissociative identity disorder (DID), and 100 patients were diagnosed with the Structured Interview for DSM–IV Personality as having borderline personality disorder (BPD). Both groups were administered the Multidimensional Inventory of Dissociation (MID). DID patients had significantly higher MID scores than BPD patients, different distributions of MID scores, and different MID subscale profiles in 3 ranges of MID scores (0–15, 15–30, 30–45). The core MID symptoms—exhibited at all ranges of MID scores—for DID patients (the presence of alters, identity confusion, and memory problems) and BPD patients (flashbacks, identity confusion, and memory problems) were ostensibly similar but were considered to be mostly produced by different underlying processes. Multiple regression analyses showed that the core MID symptoms of DID patients had different predictors than did the core MID symptoms of BPD patients. Alter identities seemed to generate most—but not all—dissociative phenomena in DID patients, whereas only the 24% highest scoring BPD patients (MID ≥45) seemed to manifest alter-driven dissociative experiences. Most BPD dissociative experiences appeared to be due to 5 other mechanisms: (a) BPD-specific, stress-driven, rapid shifts of self-state; (b and c) nondefensive disruptions of the framework of perceptual organization with or without an accompanying BPD-specific, dissociation-like disintegration of affective/neurocognitive functioning; (d) a defensive distancing or detachment from distress (i.e., simple depersonalization); and (e) Allen, Console, and Lewis’s (1999) severe absorptive detachment.     

Co-Occurrence of Dissociative Identity Disorder and Borderline Personality Disorder

The literature indicates that, among individuals with borderline personality disorder, pathological dissociation correlates with a wide range of impairments and difficulties in psychological function. It also predicts a poorer response to dialectical behavior therapy for borderline personality disorder. We hypothesized that (a) dissociative identity disorder commonly co-occurs with borderline personality disorder and vice versa, and (b) individuals who meet criteria for both disorders have more comorbidity and trauma than individuals who meet criteria for only 1 disorder. We interviewed a sample of inpatients in a hospital trauma program using 3 measures of dissociation. The most symptomatic group was those participants who met criteria for both borderline personality disorder and dissociative identity disorder on the Dissociative Disorders Interview Schedule, followed by those who met criteria for dissociative identity disorder only, then those with borderline personality disorder only, and finally those with neither disorder. Greater attention should be paid to the relationship between borderline personality disorder and dissociative identity disorder.     

Developmental Needs Meeting Strategy: A New Treatment Approach Applied to Dissociative Identity Disorder

ABSTRACT

This article describes the use of the Developmental Needs Meeting Strategy (DNMS) for the treatment of dissociative identity disorder (DID). The DNMS is an ego state therapy which guides a client's own internal resources to meet developmental needs that were not met in childhood. After 17 months of DNMS treatment, a client with DID reported a near total elimination in frequency and severity of symptoms of depression, anxiety and suicidal thoughts, her Trauma Symptom Inventory scores indicated no trauma-related symptoms, and her Multidimensional Inventory of Dissociation scores indicated she no longer met the diagnostic criteria for DID. She was functioning well without any medication. Further research concerning this treatment strategy is warranted.     

Convergence in a multi-method study between Rorschach and self-report data of traumatized refugees assessed before and after psychotherapy

Rorschach and self-report instruments represent methodologically different types of assessment, which together may yield incremental information about the test-taker. There is little evidence on whether and when results from these methods converge.

Objective

To examine possible convergences between Rorschach trauma-related personality variables and self-reported variables.

Method

Before and after psychotherapy 22 traumatized adult refugee patients were assessed with the Rorschach Performance Assessment System (R-PAS), symptom checklists of posttraumatic stress, anxiety and depression, and a quality of life questionnaire. Correlational analyses between eight R-PAS variables and 10 self-reported variables were performed.

Results

The findings showed inconsistent and nonsignificant correlations pretherapy. Posttherapy, however, all R-PAS variables except Complexity correlated positively with symptoms of mental disorder, and negatively with the quality of life variables, as predicted. The R-PAS variables Mutuality of Autonomy-Pathology, Poor Human Representation, Critical Content, and Form Quality-minus%, converged significantly with most of the self-reported variables, with medium to large correlations.

Conclusion

The finding of convergence only after psychotherapy, may tentatively suggest greater self-knowledge and internal consistency through the therapy experience, and increased trust and self-disclosure through the repeated meetings with the researchers. The findings represent a promising contribution to a cumulative validation process of convergence between Rorschach and self-report data.     

The Structure of Dissociative Fugue: A Case Report

ABSTRACT

Classically, when an episode of dissociative fugue resolves, there is enduring amnesia for the period of fugue, with normal pre- and post-fugue memory. The authors describe a case in which their treatment goal was to reverse the amnesia for the period of fugue. In the course of treatment, the authors learned that dissociative fugue has a complex internal structure, is often preceded by major depression, and can be difficult to differentiate from other dissociative disorders. There is often a history of childhood trauma. Rather than being a simple dissociative disorder, as the authors had believed, fugue is complex, structured, and often accompanied by depression.     

Fostering Internal Cooperation Through the Use of Imagery in the Treatment of Dissociative Identity Disorder

ABSTRACT

Most clinicians working with dissociative identity disorder (D.I.D.) recognize the importance of working towards a cooperative system especially during the initial stages of treatment. However, achieving this can be a monumental task given the inner war that goes on inside the mind of an individual diagnosed with D.I.D. From an ego-state theoretical framework, this article will demonstrate through clinical cases and artwork, the value of imagery techniques in changing internal perceptions, especially with regards to introject ego states. These changes can assist in eliciting more internal cooperation, a necessary task prior to working towards a collaborative, co-conscious system or what some theorists would call integration.     

The Treatment of Dissociative Identity Disorder with Cognitive Analytic Therapy: Experimental Evidence of Sudden Gains

ABSTRACT

The central aim of this study was to assess the effectiveness of cognitive analytic therapy (CAT) with a patient presenting with DID. The methodology employed an A/B single case experimental design with six-months continuous follow-up in seven experimental measures. A and B represent the assessment of seven dissociative experimental variables under two conditions: baseline (A) and treatment (B). Treatment consisted of 24 sessions of CAT with four follow-up sessions, which is standard within the CAT model for personality disorder patients. A battery of measures of general psychological functioning was also completed at assessment, termination, and follow-up. During treatment the intensity of a range of dissociative symptoms was observed to be reduced, with sudden gains evident due to specific CAT interventions in specific dissociative symptoms. The long-term effectiveness of the intervention was established by the illustration of either continued stability or continued improvement in experimental variables across the follow-up period. Analysis of the general measures illustrates clinically significant change across a variety of robust psychometric measures. The study illustrates the utility of single-case approaches with dissociative disorders and the potential for utilizing CAT generally with such presentations.     

The Multidimensional Inventory of Dissociation (MID): A Comprehensive Measure of Pathological Dissociation

ABSTRACT

This article describes the development and validation of the Multidimensional Inventory of Dissociation (MID). The MID is a 218-item, self-administered, multiscale instrument that comprehensively assesses the phenomenological domain of pathological dissociation and diagnoses the dissociative disorders. The MID measures 14 major facets of pathological dissociation; it has 23 dissociation diagnostic scales that simultaneously operationalize (1) the subjective/ phenomenological domain of pathological dissociation and (2) the hypothesized dissociative symptoms of dissociative identity disorder (Dell, 2001a). The MID was designed for clinical research and for diagnostic assessment of patients who present with a mixture of dissociative, posttraumatic, and borderline symptoms. The MID demonstrated internal reliability, temporal stability, convergent validity, discriminant validity, and construct validity. The MID also exhibited incremental validity over the Dissociative Experiences Scale (DES) by predicting an additional 18% of the variance in weighted abuse scores on the Traumatic Experiences Questionnaire (TEQ). Confirmatory factor analysis (CFA) did not support a one-factor model of the MID's clinical scales (i.e., the 14 facets and the 23 diagnostic symptoms). In contrast, however, CFA of the MID's factor scales (Dell & Lawson, 2005) has strongly supported a one-factor model. It was concluded that both the MID's 168 dissociation items and the construct of pathological dissociation have a second-order, unifactorial structure.     

Cognitive Inhibition in Dissociative Identity Disorder (DID): Developing an Understanding of Working Memory Function in DID

ABSTRACT

The current study examined cognitive inhibition, a mechanism of working memory, in dissociative identity disorder (DID). A negative priming procedure was used to assess inhibitory functioning in DID patients, as well as in a general population sample and a psychiatric comparison sample. Results from the first study show a significant interaction between group and experimental condition; the general population sample showed an independently non-significant trend towards negative priming while the two psychiatric groups showed no evidence of negative priming. Using different stimuli and a new priming procedure, Study 2 essentially replicated the findings of Study 1 with the control sample displaying significant negative priming and the two psychiatric samples producing no negative priming. High dissociativity was significantly related to reduced negative priming in Study 2. Findings suggest a relationship between DID and weakened inhibitory functioning and are discussed with reference to the negative priming and dissociation literatures.     

Dissociative Identity Disorder Among Adolescents: Prevalence in a University Psychiatric Outpatient Unit

The aim of this study was to determine the prevalence of dissociative identity disorder (DID) and other dissociative disorders among adolescent psychiatric outpatients. A total of 116 consecutive outpatients between 11 and 17 years of age who were admitted to the child and adolescent psychiatry clinic of a university hospital for the 1st time were evaluated using the Adolescent Dissociative Experiences Scale, adolescent version of the Child Symptom Inventory-4, Childhood Trauma Questionnaire, and McMaster Family Assessment Device. All patients were invited for an interview with the Structured Clinical Interview for DSM-IV Dissociative Disorders (SCID-D) administered by 2 senior psychiatrists in a blind fashion. There was excellent interrater reliability between the 2 clinicians on SCID-D diagnoses and scores. Among 73 participants, 33 (45.2%) had a dissociative disorder: 12 (16.4%) had DID, and 21 (28.8%) had dissociative disorder not otherwise specified. There was no difference in gender distribution, childhood trauma, or family dysfunction scores between the dissociative and nondissociative groups. Childhood emotional abuse and family dysfunction correlated with self-reported dissociation. Of the dissociative adolescents, 93.9% had an additional psychiatric disorder. Among them, only separation anxiety disorder was significantly more prevalent than in controls. Although originally designed for adults, the SCID-D is promising for diagnosing dissociative disorders in adolescents, its modest congruence with self-rated dissociation and lack of relationship between diagnosis and childhood trauma and family dysfunction suggest that the prevalence rates obtained with this instrument originally designed for adults must be replicated. The introduction of diagnostic criteria for adolescent DID in revised versions of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, would refine the assessment of dissociative disorders in this age group.