Publications by authors named "Michael R Nash"

This study examined if participants respond to different types of suggestions, including hypnosis, uniquely or similarly. This study used 9 suggestibility measures and hypothesized a 3-factor model. It was hypothesized that hypnosis, Chevreul's pendulum, and body-sway would load on the first factor; the odor test, progressive weights, and placebo on the second factor; and conformity, persuasibility, and interrogative suggestibility would load on the third factor.

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According to mentalization theory, reflective functioning is a core feature of healthy affect regulation which involves interactions among implicit and explicit processes across multiple systems of the individual in relation with others. Mother-infant interactions point to the role of whole body movement as a feature of developing affect regulation, promoting self-organization. Using behavioral imaging technology, we examined the legacy of whole body movement in adults undergoing an interpersonal stress task (Trier Social Stress Test; TSST).

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Article Synopsis
  • The study investigates the effects of combining cognitive restructuring therapy and transcranial direct current stimulation (tDCS) on pain tolerance in healthy adults.
  • 79 volunteers were randomly assigned to six different groups, each receiving various combinations of tDCS and cognitive or educational interventions, and their pain tolerance was tested before and after the intervention.
  • Results showed that combining cathodal tDCS with cognitive intervention resulted in the highest pain relief, suggesting potential for more effective treatments in managing chronic pain in future research.
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The division of cognition into primary and secondary processes is an important part of contemporary psychoanalytic metapsychology. Whereas primary processes are most characteristic of unconscious thought and loose associations, secondary processes generally govern conscious thought and logical reasoning. It has been theorized that an induction into hypnosis is accompanied by a predomination of primary-process cognition over secondary-process cognition.

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According to Khantzian's (2003) self-medication hypothesis (SMH), substance dependence is a compensatory means to modulate affects and self-soothe in response to distressing psychological states. Khantzian asserts: (1) Drugs become addicting because they have the power to alleviate, remove, or change human psychological suffering, and (2) There is a considerable degree of specificity in a person's choice of drugs because of unique psychological and physiological effects. The SMH has received criticism for its variable empirical support, particularly in terms of the drug-specificity aspect of Khantzian's hypothesis.

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Background: Functional neuroimaging studies have observed preserved neural activation to personally relevant stimuli in patients within the disorders of consciousness (DOC) spectrum. As the majority of studies have focused on adult DOC patients, little is known about preserved activation in the developing brain of children with impaired consciousness.

Case Study: The aim of this study is to use fMRI to measure preserved neural activation to personally relevant stimuli (subject's own name and familiar voice) in a paediatric patient who sustained a traumatic brain injury and anoxic-ischaemia following a motor vehicle accident at 18 months of age rendering her probable for minimally conscious state.

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The behavioural data yielded by single subjects in naturalistic and controlled settings likely contain valuable information to scientists and practitioners alike. Although some of the properties unique to this data complicate statistical analysis, progress has been made in developing specialised techniques for rigorous data evaluation. There are no perfect tests currently available to analyse short autocorrelated data streams, but there are some promising approaches that warrant further development.

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The case-based time-series design is a viable methodology for treatment outcome research. However, the literature has not fully addressed the problem of missing observations with such autocorrelated data streams. Mainly, to what extent do missing observations compromise inference when observations are not independent? Do the available missing data replacement procedures preserve inferential integrity? Does the extent of autocorrelation matter? We use Monte Carlo simulation modeling of a single-subject intervention study to address these questions.

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The authors describe 3 studies in which hypnosis itself is not studied but instead used to create anomalous states in the laboratory that can be studied under controlled conditions. The 1st article is a comprehensive review of programmatic research using hypnosis to elicit and study clinically relevant delusions. The 2nd article reviews studies comparing the brain activity of hysterical/dissociative patients with nonpatients hypnotized and given suggestions for sensory-motor and cognitive anomalies typical of the clinical syndromes.

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Most clinicians concede the benefits of conceptualizing children in systemic terms. Yet, many child assessments involve parents only on a limited basis. The Therapeutic Assessment model for children and families (TA-C) emphasizes parental involvement and family-driven collaboration throughout the intervention.

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The Therapeutic Assessment (TA) model is a relatively new treatment approach that fuses assessment and psychotherapy. The study examines the efficacy of this model with preadolescent boys with oppositional defiant disorder and their families. A replicated single-case time-series design with daily measures is used to assess the effects of TA and to track the process of change as it unfolds.

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The authors describe two studies of special interest to clinicians and clinical researchers. Both are randomized controlled studies, exclusively focused on female patients. The first study tests whether a year-long weekly group intervention including hypnosis can reduce cancer pain among women with metastatic breast cancer.

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The authors summarize 4 articles of special interest to the hypnosis community in the general scientific and medical literatures. All are empirical studies testing the clinical utility of hypnosis, and together address the role of hypnosis in prevention, diagnosis, and treatment of medical and psychiatric disorders/conditions. The first is a randomized controlled study of smoking cessation treatments comparing a hypnosis-based protocol to an established behavioral counseling protocol.

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We describe a family Therapeutic Assessment (TA) case study employing 2 assessors, 2 assessment rooms, and a video link. In the study, we employed a daily measures time-series design with a pretreatment baseline and follow-up period to examine the family TA treatment model. In addition to being an illustrative addition to a number of clinical reports suggesting the efficacy of family TA, this study is the first to apply a case-based time-series design to test whether family TA leads to clinical improvement and also illustrates when that improvement occurs.

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Three articles of special interest to the hypnosis community recently appeared in the general scientific and medical literatures. The first paper is a thoughtful review of the clinical applications of hypnosis in pediatric settings. The second article reports the findings of a randomized, controlled trial of hypnosis for burn-wound care, carried out at the University of Washington Medical School.

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Numerous tools are available to health care quality managers geared toward helping them make data-based inferences about quality processes. Recently, in this journal, Tukey's control chart technique was promoted as a good option for handling short streams of time series data when the assumption of data normality cannot be confirmed. Although this technique does not appear to perform well with serially dependent (or autocorrelated) data, an autocorrelation-corrected version of the technique is now available.

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Both researchers and practitioners need to know more about how laboratory treatment protocols translate to real-world practice settings and how clinical innovations can be systematically tested and communicated to a skeptical scientific community. The single-case time-series study is well suited to opening a productive discourse between practice and laboratory. The appeal of case-based time-series studies, with multiple observations both before and after treatment, is that they enrich our design palette by providing the discipline another way to expand its empirical reach to practice settings and its subject matter to the contingencies of individual change.

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The relationship between hypnotizability and somatic illness was measured in 45 college students. Several weeks after completing the Waterloo-Stanford Group C Scale (WSGC), participants filled out a somatic-complaint checklist and measures of psychopathology. Results indicated a positive correlation between hypnotizability and somatic illness, and the relationship was stronger for female participants.

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Statistical process control (SPC) charts have become widely implemented tools for quality monitoring and assurance in healthcare settings across the United States. SPC methods have been successfully used in industrial settings to track the quality of products manufactured by machines and to detect deviations from acceptable Levels of product quality. However, problems may arise when SPC methods are used to evaluate human behavior.

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Participants' expectancies and hypnotic performance throughout the course of a standardized, individually administered hypnotic protocol were analyzed with a structural equation model that integrated underlying ability, expectancy, and hypnotic response. The model examined expectancies and ability as simultaneous predictors of hypnotic responses as well as hypnotic responses as an influence on subsequent expectancies. Results of the proposed model, which fit very well, supported each of the 4 major hypothesized effects: Expectancies showed significant stability across the course of the hypnosis protocol; expectancies influenced subsequent hypnotic responses, controlling for latent ability; hypnotic responses, in turn, affected subsequent expectancies; and a latent trait underlay hypnotic responses, controlling for expectancies.

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Recently, Alemi proposed a nonparametric control chart technique (Tukey's control chart) for quality management applications when few data points are available and when data do not conform to the assumptions of traditional control chart techniques. Borckardt et al then published an empirical evaluation of the technique and concluded that the presence of autocorrelation in control-chart data negatively impacted the technique's ability to help managers make accurate decisions about the presence of special-cause variation in their data. Thus, there is still a need for control chart techniques that appropriately handle short data streams that do not necessarily conform to the assumptions of traditional control chart techniques but are not negatively impacted by autocorrelation in the data.

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Two papers of special interest to the hypnosis community have appeared in the general scientific literatures. One of these papers examines the building blocks of hypnotic response. Using expanded hypnotic protocols and sophisticated multivariate statistical analyses, the authors found evidence for 4 components of hypnotizability: direct motor, motor challenge, perceptual-cognitive, and posthypnotic amnesia.

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The present study closely examines subject response to the arm-rigidity item of the HGSHS:A. Subject behavior, subject self-report, and surface EMG of the biceps and triceps muscles were monitored. Two distinct ways of passing the item were observed and verified by EMG recordings: some subjects (tremblers) exerted muscular effort to bend the arm and kept it rigidly straight.

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Five papers of special interest to medical researchers and clinicians have recently appeared in the general scientific and medical literatures. Three of these papers are original clinical research studies evaluating whether hypnosis can be useful in treating acute stress disorder, allergic rhinitis, and distress associated with an invasive medical procedure for children. The remaining two articles critically review the empirical literature on whether and how hypnosis might be useful in a number of medical specialties.

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