The cognitive dismantling of Eye Movement Desensitization and Reprocessing (EMDR) treatment of Posttraumatic Stress Disorder (PTSD)

Rasch Modeling and Multilevel Confirmatory Factor Analysis for the Usability of the Impact of Event Scale-Revised (IES-R) during the COVID-19 Pandemic

BACKGROUND

Several instruments are currently used to assess Coronavirus Disease 2019 (COVID-19) -induced psychological distress, including the 22-item Impact of Event Scale-Revised (IES-R). The IES-R is a self-administered scale used to assess post-traumatic stress disorder (PTSD). The current study aimed to examine the construct validity of the IES-R, based on the Rasch model, with COVID-19-related data, as well as to test the multilevel construct validity of the IES-R within and among countries during the pandemic crisis.

METHODS

A multi-country web-based cross-sectional survey was conducted utilizing the 22-item IES-R. A total of 1020 participants enrolled in our survey, of whom 999 were included in the analyses. Data were analyzed using Rasch modeling and multilevel confirmatory factor analysis (MCFA).

RESULTS

The Rasch modeling results of the IES-R demonstrated that the IES-R is a satisfactory instrument with the five-point Likert scale, asserting that its 22 items are significant contributors to assessing PTSD as a unidimensional construct covered by the items of the IES-R. The MCFA confirmed that the 22-item IES-R, with its three factors, including intrusion, avoidance, and hyperarousal, demonstrates adequate construct validity at the within- and among-country levels. However, the results of the Akaike information criterion (AIC) model determined that the 16-item IES-R is better than the 22-item IES-R.

CONCLUSION

The results suggested that the 22-item IES-R is a reliable screening instrument for measuring PTSD related to the COVID-19 pandemic, and can be utilized to provide timely psychological health support, when needed, based on the screening results.

Eye movement desensitization and reprocessing for mental health problems: a systematic review and meta-analysis

There is no comprehensive meta-analysis of randomised trials examining the effects of Eye Movement Desensitization and Reprocessing (EMDR) on post-traumatic stress disorder (PTSD) and no systematic review at all of the effects of EMDR on other mental health problems. We conducted a systematic review and meta-analysis of 76 trials. Most trials examined the effects on PTSD (62%). The effect size of EMDR compared to control conditions was g = 0.93 (95% CI: 0.67-.18), with high heterogeneity (I²= 72%). Only four of 27 studies had low risk of bias, and there were indications for publication bias. EMDR was more effective than other therapies (g = 0.36; 95% CI: 0.14-0.57), but not in studies with low risk of bias. Significant results were also found for EMDR in phobias and test anxiety, but the number of studies was small and risk of bias was high. EMDR was examined in several other mental health problems, but for none of these problems, sufficient studies were available to pool outcomes. EMDR may be effective in the treatment of PTSD in the short term, but the quality of studies is too low to draw definite conclusions. There is not enough evidence to advise it for the use in other mental health problems.

The Complexity of Evidence Notwithstanding: A Reply to Swartz

This article is a response to the caveats raised by Swartz (this issue) regarding the complexities of emphasising evidence-based interventions in psychology. It is acknowledged that the process of amassing evidence to support psychological interventions requires overcoming considerable logistical and contextual difficulties. Yet, the dangers of not taking into account the vast body of data on the effectiveness of psychotherapy are likely to have serious consequences for consumers of psychological service and for the profession of psychology itself. The challenge for South African psychology is to address the complexities raised by Swartz in ways that minimise leaps of faith regarding the effectiveness of interventions so that therapeutic decisions are based on sound data rather than unsubstantiated theoretical conjecture.

Prolonged Exposure Counterconditioning (PEC) as a Treatment for Chronic Post-Traumatic Stress Disorder and Major Depression in an Adult Survivor of Repeated Child Sexual and Physical Abuse

Prolonged exposure counterconditioning (PEC) was tested as a treatment for chronic post-traumatic stress disorder (PTSD) in an adult survivor of repeated child sexual and physical abuse. PEC utilizes imaginal reliving of very pleasurable life moments in order to weaken traumatic conditioned emotional responses (CERs). A higher-order conditioned stimuli (CS) is used as a traumatic CER elicitor. Prolonged imaginal reliving of pleasurable CSs is used as a counterconditioner to the traumatic CERs. A statistical technique for analyzing single-case subject designs based on classical test theory was used to evaluate the client's progress in treatment. Results showed that PEC effectively decreased the client's PTSD symptoms, depression, and anxiety. In addition, the client's negative cognitions became considerably more positive. Also, the client lost his comorbid conditions of chronic major depressive disorder and social phobia. Finally, other clinically observed symptoms, which are described in the article, improved markedly. All results were maintained at a 3-month follow-up.

Trauma Resolution Using Eye Movement Desensitization and Reprocessing With an Incestuous Sex Offender

This case describes the use of eye movement desensitization and reprocessing (EMDR) to reduce reactivity to childhood trauma in an incestuous sex offender. It explores the relationship between desensitization and reprocessing of traumatic memory and how this may promote sex offender treatment progress as an enhancement of, not a replacement for, the cognitive-behavioral or relapse prevention treatment of sexual offenders. Pretreatment and posttreatment self-report and other-report instruments and semistructured interviews are employed to explore the results of this intervention. Implications and suggestions for this treatment protocol are suggested.

25 years of Eye Movement Desensitization and Reprocessing (EMDR): The EMDR therapy protocol, hypotheses of its mechanism of action and a systematic review of its efficacy in the treatment of post-traumatic stress disorder

Eye movement desensitization and reprocessing (EMDR) is a relatively new psychotherapy that has gradually gained popularity for the treatment of post-traumatic stress disorder. In the present work, the standardised EMDR protocol is introduced, along with current hypotheses of its mechanism of action, as well as a critical review of the available literature on its clinical effectiveness in adult post-traumatic stress disorder. A systematic review of the published literature was performed using PubMed and PsycINFO databases with the keywords «eye movement desensitization and reprocessing» and «post-traumatic stress disorder» and its abbreviations «EMDR» and «PTSD». Fifteen randomised controlled trials of good methodological quality were selected. These studies compared EMDR with unspecific interventions, waiting lists, or specific therapies. Overall, the results of these studies suggest that EMDR is a useful, evidence-based tool for the treatment of post-traumatic stress disorder, in line with recent recommendations from different international health organisations.

Eye movement desensitization in fibromyalgia: a pilot study

The purpose of this study was to investigate the effectiveness of eye movement desensitization (EMD) for the relief of pain, fatigue and anxiety and depression in fibromyalgia patients. Six Caucasian female patients (mean age=43.2 yr) participated in two treatment sessions. Outcome assessments included the Fibromyalgia Impact Questionnaire, Fatigue Scale, Beck Anxiety Inventory, and Beck Depression Inventory. In-session process measures included thermal biofeedback monitoring and subjective units of discomfort ratings of pain, stress, and fatigue. Four out of six subjects were considered treatment responders. Thermal biofeedback monitoring revealed an average increase in hand temperature of 5.4 degrees indicating a relaxation effect. At treatment termination, average scores decreased on the measures of anxiety (28.6%), depression (29.9%), fibromyalgia impact (12.6%), and fatigue (11.5%). At the 3-month follow-up assessment, total reductions in average scores from pre-treatment baseline reflected further improvements on measures of anxiety (45.8%), depression (31.6%), fibromyalgia impact (19.2%), and fatigue (26.7%). Because EMD produced a somewhat automatic relaxation response with minimal patient participation, it may be especially useful when standard relaxation techniques fail.

A systematic research synthesis of EMDR studies: implementation of the platinum standard

Eye movement desensitization and reprocessing (EMDR) is a psychological treatment method used primarily for people who have experienced trauma. This article provides a systematic research synthesis of EMDR studies targeting trauma symptomatology published between 1997 and 2003. This synthesis builds on the Revised Gold Standard (RGS) as a guide to evaluate empirical EMDR studies. Modifications and additions to the RGS criteria are proposed. The resulting standard is referred to as the Platinum Standard (PS). Sixteen EMDR studies are reviewed and critiqued using the PS criteria. None of the studies reviewed met full PS criteria. The mean score for the studies on the PS was 8.28, with 9 of the studies exceeding the mean. The review calls for researchers to employ more rigorous research designs for EMDR effectiveness using PS criteria. Implications for practice, policy, and research are discussed.

Psychometric properties of the Impact of Event Scale - Revised

This study investigated the psychometric properties of the Impact of Event Scale -- Revised (IES-R) in two samples of male Vietnam veterans: a treatment-seeking sample with a confirmed posttraumatic stress disorder (PTSD) diagnosis (N = 120) and a community sample with varying levels of traumatic stress symptomatolgy (N = 154). The scale showed high internal consistency (alpha = 0.96). Confirmatory factor analysis did not provide support for a three-factor solution corresponding to the three subscales of intrusion, avoidance, and hyperarousal. Exploratory factor analysis suggested that either a single, or a two-factor solution (intrusion/hyperarousal and avoidance), provide the best account of date. However, correlations among the subscales were higher in the community sample than in the treatment sample, suggesting that the IES-R may be sensitive to a more general construct of traumatic stress in those with lower symptom levels. The correlation between the IES-R and the PTSD Checklist was high (0.84) and a cutoff of 1.5 (equivalent to a total score of 33) was found to provide the best diagnostic accuracy.

Between innovation and tradition: the paradoxical relationship between eye movement desensitization and reprocessing and altered states of consciousness

Eye movement desensitization and reprocessing (EMDR) is a relatively new form of psychotherapy to emerge in the West. Using both a case analysis and literature review we situate EMDR within the use of altered states of consciousness (ASCs) in psychological healing practices across times and cultures. We discuss EMDR's unique predicament as a therapy that draws upon techniques common to most therapeutic ASCs, while at the same time distancing itself from this tradition through its pseudoscientific language and technologic aesthetic. Our conclusion attempts to shed light on this paradox and raise questions for further study.

Psychological treatments for posttraumatic stress disorder: recommendations for the clinician based on a review of the literature

This article reviews available research data supporting the use of psychotherapy in the treatment of posttraumatic stress disorder (PTSD). The authors highlight how this evidence might inform clinical choices in treating PTSD, as well as demonstrating how assumptions based on gaps in the available literature may be misleading. The authors first discuss findings concerning a number of interventions that are commonly used in the treatment of trauma victims or patients with PTSD: critical incident stress debriefing, psychoeducation, exposure therapy, eye movement desensitization reprocessing, stress inoculation therapy, trauma management therapy, cognitive therapy, psychodynamic psychotherapy, and hypnotherapy. They also discuss a number of treatment strategies that have recently been studied in PTSD, including imagery rehearsal, memory structure intervention, interpersonal psychotherapy, and dialectical behavior therapy. PTSD is associated with significant symptomatic morbidity, although desired outcomes in clinical practice are typically related more to reduction in social, interpersonal, and occupational impairment. The most methodologically robust studies, which have typically examined cognitive or behavioral treatments, indicate that psychotherapy helps to relieve symptom severity; however, there is no consistent information about whether these interventions are helpful in improving other domains of impairment and associated disability, even though these problems are often the greatest concern to patients. Nor does the available evidence indicate when, and for whom, various psychotherapeutic interventions should be provided, or whether different modalities of treatment can and should be combined, or sequentially offered, as is often done in specialized treatment programs. Clinicians should keep these issues in mind in reviewing the literature on current (and future) clinical research. Unfortunately, the current evidence base on psychotherapy for PTSD gives only limited guidance concerning clinical choices in managing PTSD. The authors therefore provide some clinical guidelines based on the literature for clinicians treating patients with PTSD.

Specific and nonspecific treatment factors in the experimental analysis of behavioral treatment efficacy

Interest in the empirical demonstration of the clinical efficacy of psychosocial treatments has been rekindled by societal concerns over accountability and cost-effectiveness in the delivery of mental health services. Behavior therapy has had a long history of experimental research on treatment efficacy and enjoys a visible presence in contemporary mental health practice. The demonstration of behavioral treatment efficacy, however, requires experimental evidence that shows the efficacy of prescriptive structured procedures beyond nonspecific factors in delivery of such procedures. The authors provide an analysis of the nature of nonspecific treatment factors and nonspecific effects and suggest experimental procedures testing the incremental validity of specific treatments. They examine two widely promoted, prescriptive structured treatments to analyze the specificity of their clinical efficacy: eye movement desensitization and reprocessing for anxiety disorders and cognitive-behavioral treatment of generalized anxiety disorder. They conclude that the treatments show different levels of efficacy and different degrees of specificity.

Distribution of targets in 400 eye-movement desensitization cases

In a series of 400 patients undergoing Eye-movement Desensitization (EMD), patients rarely reported more than nine flashbacks or other focal targets, which may indicate the working memory limit. Eye-movement desensitization may operate by freeing working memory capacity, enabling cognitive change and memory recovery to occur. Complete EMD treatment may require sufficient eye movements to free up working memory capacity. Patients given less than this requirement may not be adequately treated. This may account for variable results in evaluations of eye-movement desensitization. Such possible dose effects may be important in this therapy.

Bilateral eye movements enhance the retrieval of episodic memories

Two experiments examining effects of eye movements on episodic memory retrieval are reported. Thirty seconds of horizontal saccadic eye movements (but not smooth pursuit or vertical eye movements) preceding testing resulted in selective enhancement of episodic memory retrieval for laboratory (Experiment 1) and everyday (Experiment 2) events. Eye movements had no effects on implicit memory. Eye movements were also associated with more conservative response biases relative to a no eye movement condition. Episodic memory improvement induced by bilateral eye movements is hypothesized to reflect enhanced interhemispheric interaction, which is associated with superior episodic memory (S. D. Christman & R. E. Propper, 2001). Implications for neuropsychological mechanisms underlying eye movement desensitization and reprocessing (F. Shapiro, 1989, 2001), a therapeutic technique for posttraumatic stress disorder, are discussed.

Eye movement desensitization and reprocessing (EMDR): a meta-analysis

Eye movement desensitization and reprocessing (EMDR), a controversial treatment suggested for posttraumatic stress disorder (PTSD) and other conditions, was evaluated in a meta-analysis of 34 studies that examined EMDR with a variety of populations and measures. Process and outcome measures were examined separately. and EMDR showed an effect on both when compared with no treatment and with therapies not using exposure to anxiety-provoking stimuli and in pre post EMDR comparisons. However, no significant effect was found when EMDR was compared with other exposure techniques. No incremental effect of eye movements was noted when EMDR was compared with the same procedure without them. R. J. DeRubeis and P. Crits-Christoph (1998) noted that EMDR is a potentially effective treatment for noncombat PTSD. but studies that examined such patient groups did not give clear support to this. In sum, EMDR appears to be no more effective than other exposure techniques, and evidence suggests that the eye movements integral to the treatment, and to its name, are unnecessary.

Does EMDR work? And if so, why?: a critical review of controlled outcome and dismantling research

Research on Eye Movement Desensitization and Reprocessing therapy (EMDR) was reviewed to answer the questions "Does EMDR work?" and "If so, Why?" This first question was further subdivided on the basis of the control group: (a) no-treatment (or wait list control), (b) nonvalidated treatments, and (c) other validated treatments. The evidence supports the following general conclusions: First, EMDR appears to be effective in reducing at least some indices of distress relative to no-treatment in a number of anxiety conditions, including posttraumatic stress disorder, panic disorder, and public-speaking anxiety. Second, EMDR appears at least as effective or more effective than several nonvalidated treatments (e.g., relaxation, active listening) for posttraumatic stress reactions. Third, despite statements implying the contrary, no previously published study has directly compared EMDR with an independently validated treatment for posttraumatic stress disorder (e.g., therapist-directed flooding). In the treatment of simple phobia, participant modeling has been found to be more effective than EMDR. Fourth, our review of dismantling studies reveals there is no convincing evidence that eye movements significantly contribute to treatment outcome. Recommendations regarding further research directions are provided.