Factorial structure and psychometric properties of the French adaptation of the Dissociative Experiences Scale (DES) in non-clinical participants

IntroductionThe Dissociative Experiences Scale (DES) is a widely used instrument for assessing dissociation. However, there is disagreement regarding the internal structure of the DES and scores tend to be highly skewed.ObjectiveThe present study was designed to test the psychometric properties of a French version of the DES in non-clinical participants, in addition to applying a response scale as recommended by Wright and Loftus (1999) in order to resolve the problem of skewed scores.ResultsExploratory and confirmatory factor analysis (computed in two independent samples) suggested a two-factor solution, which seem to represent two forms of dissociation (“automatic pilot” related dissociation episodes and “defensive” dissociation episodes). Results also revealed high internal consistency, and satisfactory results in terms of skewness and floor effects. Finally, significant associations with other measures (anxiety, depression, traumatic experiences) indicate good concurrent validity.ConclusionsThis study offers evidence that the present version of the French adaptation of the DES reveals good psychometric properties. Analyses of the internal structure of the DES suggest that two types of dissociative experiences are being measured: automatic pilot-related dissociation episodes (e.g., associated with different types of cognitive failures) and defensive dissociation episodes that may act as defensive mechanisms, especially in persons who have been traumatized (e.g., the avoidance of a memory related to a traumatic event).     

Confirmatory factor analysis of single- and multiple-factor competing models of the dissociative experiences scale in a nonclinical sample

Previous research on the Dissociative Experiences Scale (DES) has demonstrated that (a) dissociation is quantifiable in both clinical and nonclinical samples and (b) a three-factor structure (amnesia, depersonalization, and absorption) is tenable for clinical samples. The factor structurefor nonclinical samples is less clear, with one- and multiple-factor solutions proposed. To clarify the DESfactor structure in nonclinical samples, confirmatory factor analyses were conducted on (a) one-, two-, three-, and four-factorfirst-order models and (b) two bifactor (hierarchical) models of DES scoresfor two samples of nonclinical university students. Results of delta(chi2) and goodness-of-fit indices support the three-factor (first-order) model as bestfitting of the datafor these samples. The utility of this DES model for screening both dissociative pathology and elevated normal dissociative behavior in clinical and nonclinical populations is discussed.     

Dissociation, trauma, and the role of lived experience: toward a new conceptualization of voice hearing

Voice hearing (VH) is often regarded as pathognomic for schizophrenia. The purpose of this article is to review and integrate historical, clinical, epidemiological, and phenomenological evidence in order to suggest that VH may be more appropriately understood as a dissociative rather than a psychotic phenomenon. First, we discuss the lifetime prevalence of VH in the general population, which is estimated to range between 1% and 16% for adult nonclinical populations and 2% and 41% in healthy adolescent samples. Second, we demonstrate how the ubiquity of VH phenomenology, including variables like voice location, content, and frequency, limits its diagnostic and prognostic utility for differentiating psychotic from trauma-spectrum and nonclinical populations. Finally, we report on the empirical associations between VH, measures of dissociation, and trauma particularly (though not exclusively) childhood sexual abuse. There are 2 main conclusions from this review. First, we argue that available evidence suggests that VH experiences, including those in the context of psychotic disorders, can be most appropriately understood as dissociated or disowned components of the self (or self-other relationships) that result from trauma, loss, or other interpersonal stressors. Second, we provide a rationale for clinicians to use psychotherapeutic methods for integrating life events as precipitating and/or maintaining factors for distressing voices. Potential mechanisms for the relationship between trauma, dissociation, VH, and clinical diagnosis are described, including the relevance of literature from the field of attachment in providing a diathesis for dissociation. Suggestions for future research are also discussed.     

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.'s ( 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.     

Dissociation in the laboratory: a comparison of strategies

Several methods for inducing dissociation in the laboratory were examined in a sample of 78 undergraduate students. Participants scoring high or low on the Dissociative Experiences Scale participated in three dissociation challenge conditions: (a) dot-staring task, (b) administration of pulsed photic and audio stimulation and (c) stimulus deprivation. Participants recorded their dissociative experiences both before and after each of the three challenge conditions. Across conditions, high DES participants reported significantly more dissociative sensations than low DES participants, even after controlling for pre-challenge dissociation. Moreover, regardless of DES status, pulsed photo and audio stimulation produced the greatest level of dissociative symptoms. The findings suggest that the induction of dissociative symptoms in a nonclinical sample is easily accomplished in the laboratory and that those who report more dissociative symptoms in their day-to-day life exhibit more pronounced dissociative symptoms when undergoing dissociative challenge in the laboratory. Implications for the study and treatment of dissociative symptoms are discussed.     

Dissociative experiences and anger proneness in late adolescent females with different attachment styles

The study examined the relationships among dissociative experiences, anger proneness, and attachment styles in late adolescent females. One hundred sixty-two college students (mean age = 17.5 years) were assessed using the Dissociative Experience Scale (DES), the State-Trait Anger Expression Inventory (STAXI), and the Adult Attachment Questionnaire (AAQ), a self-report tool for assessing attachment styles (avoidant, secure, and ambivalent-resistant) in close relationships of youths and adults. Significant correlations were obtained between DES scores (total and factorial) and STAXI scores (State Anger, Trait Anger, Anger/In, and Anger/Expression), confirming in a nonclinical sample the connection between anger proneness and dissociation described in patients with dissociative disorders. Insecure females, particularly ambivalent ones, scored higher on the DES, supporting van der Kolk's hypothesis of an inverse relationship between secure attachment and dissociative tendency. Moreover, insecurely attached females showed more anger proneness, with some differences between ambivalent and avoidant types. Further research should be conducted to examine these relationships in males, as well as to clarify the role of insecure attachment in anger management and the recourse to dissociation in late adolescence as a protective response to trauma and emotional distress.     

The floor effect: Impoverished spatial memory for elevator buttons

People typically remember objects to which they have frequently been exposed, suggesting that memory is a by-product of perception. However, prior research has shown that people have exceptionally poor memory for the features of some objects (e.g., coins) to which they have been exposed over the course of many years. Here, we examined how people remember the spatial layout of the buttons on a frequently used elevator panel, to determine whether physical interaction (rather than simple exposure) would ensure the incidental encoding of spatial information. Participants who worked in an eight-story office building displayed very poor recall for the elevator panel but above-chance performance on a recognition test. Performance was related to how often and how recently the person had used the elevator. In contrast to their poor memory for the spatial layout of the elevator buttons, most people readily recalled small distinctive graffiti on the elevator walls. In a more implicit test, the majority were able to locate their office floor and the eighth floor button when asked to point toward these buttons when in the actual elevator, with the button labels covered. However, identification was very poor for other floors (including the first floor), suggesting that even frequent interaction with information does not always lead to accurate spatial memory. These findings have implications for understanding the complex relationships among attention, expertise, and memory.     

Emotions and the habitus: Young people with socio-emotional differences (re)producing social,emotional and cultural capital in family and leisure space-times

In this paper we explore the importance of emotionally inter-dependent relationships to the functioning of embodied social capital and habitus. Drawing upon the experiences of young people with socio-emotional differences, we demonstrate how emotionally inter-dependent and relatively nurturing relationships are integral to the acquisition of social capital and to the co-construction and embodiment of habitus. The young people presented in this paper often had difficulties in forging social relationships and in acquiring symbolic and cultural capital in school spaces. However, we outline how these young people (re)produce and embody alternative kinds of habitus, based on emotionally reciprocal relationships forged through formal and informal leisure activities and familial and fraternal social relationships. These alternative forms of habitus provide sites of subjection, scope for acquiring social and cultural capital and a positive sense of identity in the face of problematic relations and experiences in school spaces.     

Analysis of the multidimensionality of hallucination-like experiences in clinical and nonclinical Spanish samples and their relation to clinical symptoms: implications for the model of continuity

Numerous studies have found that hallucinatory experiences occur in the general population. But to date, few studies have been conducted to compare clinical and nonclinical groups across a broad array of clinical symptoms that may co-occur with hallucinations. Likewise, hallucination-like experiences are measured as a multidimensional construct, with clinical and subclinical components related to vivid daydreams, intrusive thoughts, perceptual disturbance, and clinical hallucinatory experiences. Nevertheless, these individual subcomponents have not been examined across a broad spectrum of clinically disordered and nonclinical groups. The goal of the present study was to analyze the differences and similarities in the distribution of responses to hallucination-like experience in clinical and nonclinical populations and to determine the relation of these hallucination-like experiences with various clinical symptoms. These groups included patients with schizophrenia, non-psychotic clinically disordered patients, and a group of individuals with no psychiatric diagnoses. The results revealed that hallucination-like experiences are related to various clinical symptoms across diverse groups of individuals. Regression analysis found that the Psychoticism dimension of the Symptom Check List (SCL-90-R) was the most important predictor of hallucination-like experiences. Additionally, increased auditory and visual hallucination was the only subcomponent that differentiated schizophrenic patients from other groups. This distribution of responses in the dimensions of hallucination-like experiences suggests that not all the dimensions are characteristic of people hearing voices. Vivid daydreams, intrusive thoughts, and auditory distortions and visual perceptual distortions may represent a state of general vulnerability that does not denote a specific risk for clinical hallucinations. Overall, these results support the notion that hallucination-like experiences are closer to a quasi-continuum approach and that total scores on these scales explain a state of vulnerability to general perceptual disturbance.     

The relationship between different types of dissociation and psychosis-like experiences in a non-clinical sample

This study investigated whether detachment-type dissociation, compartmentalisation-type dissociation or absorption was most strongly associated with psychosis-like experiences in the general population. Healthy participants (N = 215) were tested with the Dissociative Experiences Scale (DES, for detachment-related dissociative experiences); the Harvard Group Scale of Hypnotic Susceptibility (HGSHS: A, for dissociative compartmentalisation); the Tellegen Absorption Scale (TAS, for non-clinical ‘functional’ dissociative experience); and two measures of psychotic-like experiences, the 21-item Peters et al. Delusions Inventory (PDI-21) and the Cardiff Anomalous Perceptions Scale (CAPS). In multiple regression analyses, DES and TAS but not HGSHS: A scores were found to be significantly associated with PDI-21 and CAPS overall scores. A post hoc hierarchical cluster analysis checking for cluster overlap between DES and CAPS items, and the TAS and CAPS items showed no overlap between items on the DES and CAPS and minimal overlap between TAS and CAPS items, suggesting the scales measure statistically distinct phenomena. These results show that detachment-type dissociation and absorption, but not compartmentalisation-type dissociation are significantly associated with psychosis-like experiences in a non-clinical population.     

Childhood memories of threatening experiences and submissiveness and its relationship to hallucination proneness and ideas of reference: The mediating role of dissociation

Recent studies have emphasized the importance of childhood memories of threatening experiences and submissiveness in a diversity of psychological disorders. The purpose of this work was to study their specific relationship with hallucination proneness and ideas of reference in healthy subjects. The ELES scale for measuring memory of adverse childhood experiences, the DES ‐II scale for measuring dissociation, the LSHS ‐R scale for measuring hallucination proneness, and the REF for ideas of reference were applied to a sample of 472 subjects. A positive association was found between childhood memories of adverse experiences and hallucination proneness and ideas of reference, on one hand, and dissociation on the other. A mediation analysis showed that dissociation was a mediator between the memory of adverse childhood experiences and hallucination proneness on one hand, and ideas of reference on the other. When the role of mediator of the types of dissociative experiences was studied, it was found that absorption and depersonalization mediated between adverse experiences and hallucination proneness. However, this mediating effect was not found between adverse experiences and ideas of reference. The relationship between these last two variables was direct. The results suggest that childhood memories of adverse experiences are a relevant factor in understanding hallucination proneness and ideas of reference. Similarly, dissociation is a specific mediator between adverse childhood experiences and hallucination proneness.     

Pathological Dissociation and Its Relationships with Aggression and Delinquency in a College Student Sample in Hong Kong

Pathological dissociation is widely regarded as a cross-culturally occurring condition related to trauma and adversity and is an important construct in the mental health field. Yet, the frequency of pathological dissociation in both clinical and nonclinical populations in Hong Kong remains unknown. In addition, the relationship of pathological dissociation with aggression and delinquency requires further investigation. To investigate these relationships, we administered the Dissociative Experiences Scale-Taxon (DES-T), the 5-item Somatoform Dissociation Questionnaire (SDQ-5), selected sections from the Self-Report Version of the Dissociative Disorders Interview Schedule (SR-DDIS), the Reactive–Proactive Aggression Questionnaire (RPQ), and a delinquent behaviors checklist to 177 college students in Hong Kong. The findings suggest that pathological dissociation is not as rare as it is traditionally believed to be in Hong Kong. In our sample, 4.52% of the participants may have a DSM-5 dissociative disorder (including other specified dissociative disorder) while 9.60% met the DSM-5 diagnostic criteria for borderline personality disorder (BPD). Our findings indicate that the RPQ total score and delinquency may be more characteristic of BPD than of pathological dissociation. In addition, while reactive aggression was related to pathological dissociation and BPD symptoms in both genders, proactive aggression was related to pathological dissociation and BPD symptoms only in females. Although the findings of this study are preliminary and the results should be interpreted with caution, the study provides the first data regarding pathological dissociation and its relationship with aggression and delinquency in Hong Kong. Some implications for research and practice are highlighted. Further investigation of pathological dissociation in Hong Kong is necessary. In addition, more studies are essential to further examine the relationships between pathological dissociation, aggression, and delinquency in both clinical and nonclinical populations.     

Intimate partner cohesion and military unit cohesion: Different types of interpersonal relationships each uniquely predict soldier well-being

Although research on military populations has found that measures of personal well-being are correlated with both intimate partner cohesion and military unit cohesion, it is not clear how these correlations should be interpreted. Based on Relationship Regulation Theory, it was expected that each type of interpersonal relationship would have independent effects, that each would uniquely predict outcomes, and that effects would remain significant after controlling for person-level traits and experiences, such as trait resilience and exposure to combat. A sample of 273 active-duty military personnel completed self-report measures of cohesion in two types of interpersonal relationships (intimate relationships and military unit relationships), two control variables (trait resilience and combat exposure), and three outcome variables (well-being, negative emotionality, and trauma-related stress). Results indicated that cohesion in the two types of relationships were minimally related to each other, but both correlated with outcome variables. Effects for each type of interpersonal relationship remained significant after controlling for the other type and controlling for trait resilience and combat exposure. The results suggest that the effects of interpersonal cohesion are best understood as reflecting experiences in specific types of relationships rather than general characteristics of people in those relationships.     

The Nonconscious Nature of Power: Cues and Consequences

Power – asymmetric control over valued resources – is a fundamental dimension of social relations. Classical conceptualizations of power emphasize its conscious nature. In this review, we reveal how power often operates nonconsciously and identify the different methods and paradigms used to activate or create a psychological sense of power outside of conscious awareness. First, we establish that cues of power are often attended to nonconsciously, which explains why people can be so accurate at determining their own and others’ level of power yet so inaccurate at identifying the specific cues diagnostic of possessing power. Second, we discuss how people are often unaware of how the possession of power fundamentally alters basic psychological and behavioral tendencies and describe the range of methodologies – roles, cues, episodic recall, conceptual priming – used to identify the nonconscious effects of power. Power produces two broad types of effects: It increases abstraction in thought and approach in behavior, both of which make individuals more focused on their own goals and internal states. Like other psychological constructs and processes, even ones that are inherently social and relational, power’s cues and consequences do not have to be conscious for its profound influence on basic psychological and interpersonal processes to emerge. We discuss the implications of the nonconscious nature of power for limiting the corrupting, dark side often revealed among the powerful.     

The Eating Attitudes Test: validation with DSM-IV eating disorder criteria

The Eating Attitudes Test (EAT; Garner & Garfinkel, 1979) is one of the most widely used self-report eating disorder instruments. Originally developed to diagnose anorexia nervosa, it is often used in nonclinical samples where it has a high false-positive rate, which is likely due to changes in diagnostic criteria. Because the EAT has not been validated with Diagnostic and Statistical Manual of Mental Disorders (4th ed. [DSM-IV]; American Psychiatric Association, 1994) criteria, we examined its criterion validity for discriminating between nonclinical women with and without an undifferentiated DSM-IV eating disorder diagnosis. We also examined differences in mean EAT scores among eating-disordered, symptomatic, and asymptomatic participants. Results show that the EAT has an accuracy rate of at least 90% when used to differentially diagnose those with and without eating disorders and that mean EAT scores differed among eating-disordered, symptomatic, and asymptomatic participants.     

Universal and culture-specific effects of display-control compatibility

Research on compatibility of displays and controls has been a staple of basic and applied experimental psychology since the work by Paul Fitts and colleagues in the 1950s. Compatibility is often defined in terms of natural response tendencies, and many behavioral studies have been conducted examining various determinants of compatibility effects. Some compatibility phenomena are universal because of constant properties of the physical environments in which people live. Others, often called population stereotypes (Loveless, 1962), are specific to particular cultural groups due to experience with unique display-control relations. Determining which compatibility phenomena are universal and which are limited to certain populations is necessary for knowing how widely various compatibility principles can be expected to hold for performance. In this article we examine the universal and cultural aspects of display-control compatibility with an emphasis on implications for understanding human performance in general and for applying the knowledge to design of interfaces that will be maximally compatible with the characteristics of the intended users.     

Developing and Adapting a Mindfulness-Based Group Intervention for Racially and Economically Marginalized Patients in the Bronx

Mindfulness-based interventions (MBIs; e.g., MBSR, MBCT, ACT) have been widely used and disseminated for treatment of myriad physical and psychological problems. However, most MBIs have primarily been used with middle-or upper-class White populations, with some instances where they have been adapted for use with diverse populations (e.g., Burnett-Zeigler et al., 2016, Roth and Robbins, 2004). However, even when adapted, most MBIs have not explicitly addressed unique factors faced by the target population, such as racial discrimination, unemployment, lack of financial means, and other stressors. We developed and used an iterative approach to refine a MBI group based on MBSR and MBCT, for a racially and ethnically diverse population in the Bronx, considered by the U.S. census to be the most diverse in the country. Based on a trauma-informed care and centering people of color approach, we developed a longer than usual (16 weeks) mindfulness-based group, where core skills were broken down into smaller chunks to facilitate easier incorporation into daily life. We also used a longer duration and 1-hour weekly meeting time keeping in mind needs of the individuals, who often had limited time to participate due to work limitations and other comorbid physical conditions. While acknowledging that the individuals this group was catering to had experienced multiple traumatic events, we sought to also highlight and further develop the resilience and courage people in the Bronx community bring to the table. We review two clinically rich case vignettes, and also discuss recommendations for working with racially and economically marginalized people, and include a call to action for health care providers and organizations to engage in activism.     

Rapid decisions from experience

In many everyday decisions, people quickly integrate noisy samples of information to form a preference among alternatives that offer uncertain rewards. Here, we investigated this decision process using the Flash Gambling Task (FGT), in which participants made a series of choices between a certain payoff and an uncertain alternative that produced a normal distribution of payoffs. For each choice, participants experienced the distribution of payoffs via rapid samples updated every 50 ms. We show that people can make these rapid decisions from experience and that the decision process is consistent with a sequential sampling process. Results also reveal a dissociation between these preferential decisions and equivalent perceptual decisions where participants had to determine which alternatives contained more dots on average. To account for this dissociation, we developed a sequential sampling rank-dependent utility model, which showed that participants in the FGT attended more to larger potential payoffs than participants in the perceptual task despite being given equivalent information. We discuss the implications of these findings in terms of computational models of preferential choice and a more complete understanding of experience-based decision making.     

Elucidating satisfaction with physical activity: An examination of the day-to-day associations between experiences with physical activity and satisfaction during physical activity initiation

Satisfaction with physical activity is known to be an important factor in physical activity maintenance, but the factors that influence satisfaction are not well understood. The purpose of this study was to elucidate how ongoing experiences with recently initiated physical activity are associated with satisfaction. Participants (n?=?116) included insufficiently active volunteers who initiated a self-directed physical activity regimen and completed daily diaries about their experiences for 28?days. We used multilevel models to examine the associations between experiences with physical activity and satisfaction. Significant between-person effects demonstrated that people reporting higher average levels of positive experiences and lower levels of thinking about the negative aspects of exercise were more likely to report higher levels of satisfaction (ps?<?.05). Positive experiences and perceived progress toward goals had significant within-person effects (ps?<?.01), suggesting that day-to-day fluctuations in these experiences were associated with changes in satisfaction. These findings elucidate a process through which people may determine their satisfaction with physical activity.