Psychometric Comparison of Dissociative Experiences Scales II and C: A Weak Trauma-Dissociation Link

The debate regarding the relationship between dissociation and trauma has raised questions regarding the validity of measures of dissociation. Dalenberg et al.\u27s (2012) meta-analysis included studies using the Dissociative Experiences Scale (DES II), but excluded the DES-Comparison (DES-C) scale, claiming that it lacked validity as a measure of dissociation. Lynn et al. (2014) contended that omitting those studies might have skewed the results. In the current study, we compared the psychometric properties of both measures in two nonclinical US adult (student, general population) samples to evaluate the convergent and discriminant validity of the scales. We found support for the DES-II as a measure of dissociation as well as the validity and reliability of the DES-C, which compares well to the DES II. Compared with studies in Dalenberg et al., we found lower correlations between trauma and dissociation. No empirical basis exists to exclude studies using the DES-C in literature reviews. Copyright © 2017 John Wiley & Sons, Ltd

Psychometric Comparison of Dissociative Experiences Scales II and C: A Weak Trauma-Dissociation Link

The debate regarding the relationship between dissociation and trauma has raised questions regarding the validity of measures of dissociation. Dalenberg et al.\u27s (2012) meta-analysis included studies using the Dissociative Experiences Scale (DES II), but excluded the DES-Comparison (DES-C) scale, claiming that it lacked validity as a measure of dissociation. Lynn et al. (2014) contended that omitting those studies might have skewed the results. In the current study, we compared the psychometric properties of both measures in two nonclinical US adult (student, general population) samples to evaluate the convergent and discriminant validity of the scales. We found support for the DES-II as a measure of dissociation as well as the validity and reliability of the DES-C, which compares well to the DES II. Compared with studies in Dalenberg et al., we found lower correlations between trauma and dissociation. No empirical basis exists to exclude studies using the DES-C in literature reviews. Copyright © 2017 John Wiley & Sons, Ltd

Mirror- and Eye-Gazing: An Integrative Review of Induced Altered and Anomalous Experiences

none3sìopenCaputo, Giovanni B.; Lynn, Steven Jay; Houran, JamesCaputo, Giovanni B.; Lynn, Steven Jay; Houran, Jame

Trance Logic, Age Regression, and Incomplete Responding: A Preliminary Investigation of Contextual Influences

Fifty-four hypnotizable and 49 unhypnotizable simulating subjects were age regressed to age five and asked to write the sentence “I am participating in a psychological experiment” embedded in either “standard” suggestions for regression or in the context of a suggested dream. As predicted, hypnotizable subjects were sensitive to the context manipulation (i.e., dream vs. standard), evidencing more correct or “adult” spelling (“trance logic”) during age regression when the dream context encouraged a melding of fantasy and reality. Simulators’ performance was stable across conditions. Consistent with the hypothesis that incomplete responding is at the heart of incongruous spelling during age regression, the hypnotizable and simulating subjects who evinced the least compelling experiences of age regression were the most likely to spell “adult” words correctly (exhibit “trance logic”). Finally, none of the 31 subjects whose handwriting was rated as “childlike and primitive” spelled the word “psychological” correctly, providing clear evidence that subjects who were the most responsive to the age regression suggestion fail to exhibit trance logic

Fifty Psychological and Psychiatric Terms to Avoid: a List of Inaccurate, Misleading, Misused, Ambiguous, and Logically Confused Words and Phrases

The goal of this article is to promote clear thinking and clear writing among students and teachers of psychological science by curbing terminological misinformation and confusion. To this end, we present a provisional list of 50 commonly used terms in psychology, psychiatry, and allied fields that should be avoided, or at most used sparingly and with explicit caveats. We provide corrective information for students, instructors, and researchers regarding these terms, which we organize for expository purposes into five categories: inaccurate or misleading terms, frequently misused terms, ambiguous terms, oxymorons, and pleonasms. For each term, we (a) explain why it is problematic, (b) delineate one or more examples of its misuse, and (c) when pertinent, offer recommendations for preferable terms. By being more judicious in their use of terminology, psychologists and psychiatrists can foster clearer thinking in their students and the field at large regarding mental phenomena

Cross-validation of the ego dissolution scale: implications for studying psychedelics

IntroductionEgo dissolution, variously called Ego-Loss, self-loss, and ego disintegration, is a hallmark of psychedelic drug use. We cross-validated the 10-item Ego Dissolution Scale, which we developed to assess ego dissolution in everyday life, and we included comparator variables that expanded our original assessment of construct validity.MethodsUndergraduate college student volunteers (N = 527) completed the measures online.ResultsWe replicated the original two factor structure (i.e., subfactors: Ego-Loss and Unity/connectedness with others, the world, universe), and we determined that the total score (Cronbach’s α = 0.79) and subfactors (Ego-Loss = 78; Unity = 0.83) possessed adequate-to-good reliability and strong convergent validity (e.g., mindfulness, hallucination-predisposition, sleep variables, personality variables, positive/negative affect transliminality, dissociation/depersonalization), while neuroticism, social desirability did not correlate highly with ego dissolution. We identified distinct patterns of relations of measures associated with the Ego-Loss vs. Unity subfactors.DiscussionWe discuss the implications of the use of the EDS for studying everyday aspects of ego dissolution, the long-term effects of psychedelic use, and the value of using the scale in conjunction with measures of the acute effects of psychedelics

Scaling considerations for a multi-megawatt class supercritical CO2 brayton cycle and commercialization.

Small-scale supercritical CO2 demonstration loops are successful at identifying the important technical issues that one must face in order to scale up to larger power levels. The Sandia National Laboratories supercritical CO2 Brayton cycle test loops are identifying technical needs to scale the technology to commercial power levels such as 10 MWe. The small size of the Sandia 1 MWth loop has demonstration of the split flow loop efficiency and effectiveness of the Printed Circuit Heat Exchangers (PCHXs) leading to the design of a fully recuperated, split flow, supercritical CO2 Brayton cycle demonstration system. However, there were many problems that were encountered, such as high rotational speeds in the units. Additionally, the turbomachinery in the test loops need to identify issues concerning the bearings, seals, thermal boundaries, and motor controller problems in order to be proved a reliable power source in the 300 kWe range. Although these issues were anticipated in smaller demonstration units, commercially scaled hardware would eliminate these problems caused by high rotational speeds at small scale. The economic viability and development of the future scalable 10 MWe solely depends on the interest of DOE and private industry. The Intellectual Property collected by Sandia proves that the ~10 MWe supercritical CO2 power conversion loop to be very beneficial when coupled to a 20 MWth heat source (either solar, geothermal, fossil, or nuclear). This paper will identify a commercialization plan, as well as, a roadmap from the simple 1 MWth supercritical CO2 development loop to a power producing 10 MWe supercritical CO2 Brayton loop

Myths and misconceptions about hypnosis and suggestion: Separating fact and fiction

We present 21 prominent myths and misconceptions about hypnosis in order to promulgate accurate information and to highlight questions for future research. We argue that these myths and misconceptions have (a) fostered a skewed and stereotyped view of hypnosis among the lay public, (b) discouraged participant involvement in potentially helpful hypnotic interventions, and (c) impeded the exploration and application of hypnosis in scientific and practitioner communities. Myths reviewed span the view that hypnosis produces a trance or special state of consciousness and allied myths on topics related to hypnotic interventions; hypnotic responsiveness and the modification of hypnotic suggestibility; inducing hypnosis; and hypnosis and memory, awareness, and the experience of nonvolition. By demarcating myth from mystery and fact from fiction, and by highlighting what is known as well as what remains to be discovered, the science and practice of hypnosis can be advanced and grounded on a firmer empirical footing

LSST Science Book, Version 2.0

A survey that can cover the sky in optical bands over wide fields to faint magnitudes with a fast cadence will enable many of the exciting science opportunities of the next decade. The Large Synoptic Survey Telescope (LSST) will have an effective aperture of 6.7 meters and an imaging camera with field of view of 9.6 deg^2, and will be devoted to a ten-year imaging survey over 20,000 deg^2 south of +15 deg. Each pointing will be imaged 2000 times with fifteen second exposures in six broad bands from 0.35 to 1.1 microns, to a total point-source depth of r~27.5. The LSST Science Book describes the basic parameters of the LSST hardware, software, and observing plans. The book discusses educational and outreach opportunities, then goes on to describe a broad range of science that LSST will revolutionize: mapping the inner and outer Solar System, stellar populations in the Milky Way and nearby galaxies, the structure of the Milky Way disk and halo and other objects in the Local Volume, transient and variable objects both at low and high redshift, and the properties of normal and active galaxies at low and high redshift. It then turns to far-field cosmological topics, exploring properties of supernovae to z~1, strong and weak lensing, the large-scale distribution of galaxies and baryon oscillations, and how these different probes may be combined to constrain cosmological models and the physics of dark energy.Comment: 596 pages. Also available at full resolution at http://www.lsst.org/lsst/sciboo

The Return of the Repressed: The Persistent and Problematic Claims of Long-Forgotten Trauma

Can purely psychological trauma lead to a complete blockage of autobiographical memories? This longstanding question about the existence of repressed memories has been at the heart of one of the most heated debates in modern psychology. These so-called memory wars originated in the 1990s and many scholars have assumed that they are over. We demonstrate that this assumption is incorrect and that the controversial issue of repressed memories is alive and well and may even be on the rise. We review converging research and data from legal cases indicating that the topic of repressed memories remains active in clinical, legal, and academic settings. We show that the belief in repressed memories occurs on a non-trivial-scale (58%) and appears to have increased among clinical psychologists since the 1990s. We also demonstrate that the scientifically controversial concept of dissociative amnesia, which we argue is a substitute term for memory repression, has gained in popularity. Finally, we review work onthe adverse side effects of certain psychotherapeutic techniques, some of which may be linked to the recovery of repressed memories. The memory wars have not vanished: They have continued to endure and contribute to potentially damaging consequences in clinical, legal, and academic contexts