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).     

Absorbed in sleep: Dissociative absorption as a predictor of sleepiness following sleep deprivation in two high-functioning samples

In recent years, a labile sleep-wake cycle has been implicated as a cause for dissociative experiences, and studies show that dissociation is elevated following sleep deprivation. Dissociative individuals may find it harder to regulate sleepiness in the face of sleep disruption. Although there is significant variability in reactions to sleep deprivation, research on trait predictors is scarce. The present study examined the ability of trait dissociation to prospectively predict sleepiness following sleep loss and recovery sleep. Two high-functioning samples, namely, Remotely Piloted Aircraft officers (N = 29) and Air Force jet pilots (N = 57) completed state and trait questionnaires assessing sleep and dissociation before and after full or partial sleep loss. Dissociative absorption was a consistent predictor of an increase in sleepiness following sleep loss and following recovery sleep, controlling for baseline sleepiness levels. We discuss the findings in light of a difficulty to regulate and monitor consciousness states.     

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 Scale Taxon and Measurement of Dissociative Pathology: Does the Taxon Add to an Understanding of Dissociation and Its Associated Pathologies?

The Dissociative Experiences Scale Taxon (DES-T) is a modified version of the Dissociative Experiences Scale (DBS) that relies on a subset of eight categorical variables to overcome errors introduced into diagnostic classification by virtue of the use of dimensional measures of dissociation (e.g., DES) that mix normal and abnormal dissociative experiences. The present study examined the diagnostic accuracy of the DES-T and the DES in two non-dissociative psychiatric samples and four dissociative disorders. Classification of the six groups by the two measures yielded more errors with the DES-T and a high degree of correlation between normal and abnormal dissociative experience. The DES-T was sensitive for only the most extreme forms of dissociative pathology. There was no support for the use of the DES-T in lieu of the DES, or for reliance on either as a definitive diagnostic measure.     

Uncertainty about perception and dissociation after compulsive-like staring: Time course of effects

Repeated and compulsive-like checking reduces confidence in memory for the last check. Obsessive-compulsive (OC) patients are not only uncertain about memory, but may also be uncertain about perception, while this perceptual uncertainty may be associated with prolonged visual fixation on the object of uncertainty. It was reported earlier that, among healthy participants, prolonged staring at light bulbs or gas rings induces OC-like uncertainty about perception and feelings of dissociation [van den Hout, M. A., Engelhard, I. M., de Boer, C., du Bois, A., & Dek, E. (2008). Perseverative and compulsive-like staring causes uncertainty about perception. Behaviour Research and Therapy, 46, 1300–1304]. In that study, staring continued for 10 min. For patients, however, staring intervals seem to be considerably shorter. To test the clinical credibility of the paradigm as a model of the maintenance of OC perceptual uncertainty, we investigated whether the effects of staring materialize long before 10 min. Five groups of 16 undergraduates participated: one group did not stare at a gas stove while the others stared for 7.5, 15, 30 or 300 s. In the absence of staring, no pre-to-post increase in dissociation/uncertainty was reported, but after staring it was. The larger part of the observed dissociation/uncertainty after 5 min had occurred within 30 s, and around 50% of this maximal increase was reported between 7.5 and 15 s. Thus, even relatively short intervals of staring induce uncertainty about perception and dissociative experiences. Perseverative looking at objects may be a counter-productive OC strategy, which increases uncertainty about perception and may serve to maintain the disorder.     

Dissociative experiences are related to commissions in emotional memory

Two rival hypotheses of the link between dissociative experiences and emotional memory were tested: 1) the defence mechanism hypothesis that assumes that dissociation promotes fragmentation of emotional memory; and 2) the fantasy proneness hypothesis that claims that because of its overlap with fantasy proneness, dissociation is related to commissions in emotional memory. Undergraduates scoring high (n = 19) or low (n = 19) on the Dissociative Experiences Scale (DES) listened to an aversive story. Next, a free recall task was administered. While high dissociators made more commission errors in their free recall than did low dissociators, fantasy proneness did not account for this difference.     

Relationship of purported measures of pathological and nonpathological dissociation to self-reported psychological distress and fantasy immersion

In order to investigate both the psychometric structure of the Dissociative Experiences Survey (DES) and the discriminant validity of the DES-Taxon (Waller, Putnam, & Carlson, 1996) as a specific marker of pathological dissociation, 376 non-clinical community based respondents completed the DES and a battery of psychopathology and imaginative involvement self-report measures. The DES was scored for both the Taxon and the DES-Absorption subscale. A DES subscale purported to tap normative dissociative processes. The two DES subscales demonstrated substantial overlap, both with each other (r = .80) and with the self-report measures with both DES scales comparably associated with high levels of psychological distress. Both DES subscales were also associated with elevated levels of "normative" imaginative involvement (fantasy proneness, absorption, daydreaming immersion). We conclude that both DES scales are largely indistinguishable from each other in relation to other self-report measures of psychopathology and fantasy access.     

Sleep experiences,dissociation, imaginal experiences,and schizotypy: The role of context

Watson (2001) reported moderate correlations between the Iowa Sleep Experience Survey (ISES) and self-report measures of dissociation and schizotypy. Subsequent investigations (Fassler, Knox, & Lynn, 2003; Watson, 2003) reported similar, although somewhat more modest, correlations between the ISES and measures of dissociation and schizotypy, as well as with measures of absorption and negative affect. The present study tested subjects in conditions in which the measures of sleep experiences were administered with other measures in either the same (N = 86) or a different (N = 87) test context. We determined that sleep experiences were associated with measures of dissociation, absorption, and schizotypy. We closely replicated Watson (2001) and found that the ISES correlations with other measures were not affected by the test context. We suggest that Watson’s (2001) hypothesized common domain of unusual cognitive and perceptual experiences (e.g., sleep experiences) may be underpinned by common ties to imaginative experiences.     

Dispositional mindfulness and perceived stress: The role of emotional intelligence

The present study examined the relationships between dispositional mindfulness, emotional intelligence and perceived stress using self-report measures. We administered the Mindful Attention Awareness Scale (MAAS), the Wong Law Emotional Intelligence Scale (WLEIS), and the Perceive Stress Scale (PPS) to a non-clinical sample of Chinese adults (n = 380). The results showed that mindfulness was positively associated with four components of WLEIS, and negatively associated with perceived stress. Mediation analysis indicated that only the regulation and use of emotion components of WLEIS acted as mediators of the association between mindfulness and perceived stress. Effect contrasts showed no significant difference between the specific indirect effects through these two mediators. Implications and suggestions for future research are discussed.     

Dissociative Experiences and Vividness of Auditory Imagery

The relationship between dissociation and auditory imagery were assessed, 2 variables that sometime influence on artistic creativity. A total of 170 fine arts undergraduates (94 women and 76 men) received 2 dissociation questionnaires—the Dissociative Ability Scale (DAS), and the Dissociative Experiences Scale (DES)—and 2 auditory imagery questionnaires—the Auditory Imagery Questionnaire (AIQ) and the Clarity of Auditory Imagery Scale (CAIS). Significant differences on the auditory imagery (CAIS) have been found between individuals scoring high or low on the DES and DAS. In this study, however, significant differences were only observed on the Auditory Imagery Questionnaire (AIQ) between individuals scoring high or low on the DAS. Moreover, conflicting results have been obtained on the influence of dissociative experiences on dissociative skills in 2 auditory imagery tests. The discrepancies in the results only lead to more questions being asked than answered. Several lines of research are proposed.     

Is intensive measurement of body image reactive? A two-study evaluation using Ecological Momentary Assessment suggests not

Intensive assessment methods (e.g., Ecological Momentary Assessment [EMA]) are increasingly used to capture body image experiences in daily life. One concern with EMA is multiple assessments may increase reactivity to internal or external cues, potentially biasing measurement. Reactivity to EMA was evaluated in two studies (Study 1: N = 63 female undergraduates, Study 2: N = 131 women with high body dissatisfaction/disordered eating). Participants completed five daily surveys on handheld computers for 1–2 weeks and body image-related questionnaires at the start and end of each study. Results showed no systematic changes in pre- and post-EMA measures or momentary EMA reports, suggesting women were not reactive to the EMA protocols. Completing 1–2 weeks of EMA does not appear to affect body dissatisfaction, mood, or attitudes in non-clinical or at-risk samples of women. These studies provide evidence that EMA methods can be used to assess real-world body image experiences without undue concern about measurement reactivity.     

The evolutionary role of self-deceptive enhancement as a protective factor against antisocial cognitions

This study investigates the relationship between self-deception and variables associated with antisociality in the general population (i.e., mating effort, antisocial thinking, psychopathy, and personality), seeking to provide an evolutionary explanation for how self-deception might influence antisocial thinking. The Mating Effort Scale (MES); an adjusted version of the Psychological Inventory of Criminal Thinking Styles (PICTS); the Levenson Self-Report Psychopathy Scale (LSRP); the NEO-Five Factor Inventory-Revised (NEO-FFI-R), and the Paulhus Deception Scales (PDS) were administered to 95 participants (33 males, 62 females, mean age = 36.4 years). Self-deceptive enhancement correlated significantly and negatively with Neuroticism (r = −.30, p < 0.01), and positively with Openness (r = .27, p < 0.05) and Conscientiousness (r = .43, p < 0.01). Mating effort related primarily to the PICTS and self-reported psychopathy. Factor analysis of the scales produced two underlying components; ‘careless non-cooperation’ (defined by impulsive antisociality) and ‘careful cooperation’ (reflecting dutifulness, emotional stability, and social desirability). Our results suggest self-deceptive enhancement may be a protective factor against antisocial thinking and behaviour, and that this is impeded by high neuroticism and impulsive thinking.     

Developing an instrument to measure physical activity related self-worth in women: Rasch analysis of the Women's Physical Activity Self-Worth Inventory (WPASWI)

ObjectivesThe objective of this study is to report on the development of an instrument to assess non-physical aspects of physical activity (PA)-related self-worth (SW).MethodsThree hundred thirty five women (mean age = 36.69 ± 15.94 yrs, BMI = 24.87 ± 4.56) completed the Women's Physical Activity Self-Worth Inventory (WPASWI), General SW Scale, and a PA Questionnaire. Rasch analysis was used to evaluate the WPASWI.ResultsThree PA-related SW subscales were identified: PA Knowledge (16 items), PA Emotional (13 items), and PA Social (8 items). Rasch analysis supported construct validity, and items demonstrated acceptable internal consistency (Cronbach's alpha = 0.90, 0.87 and 0.72) and test-re-test reliability (r = 0.79, 0.70, 0.81). Women who reported regular PA participation had higher PA Knowledge, PA Emotional, PA Social, and General SW than those who reported some or no PA (p < 0.01) and correlations between Knowledge, Emotional, and Social SW subscales and General SW were 0.207, 0.130, and 0.220, respectively. PA Knowledge and PA Emotional SW had stronger correlations with PA (r = 0.344, 0.273, respectively) than did General SW (r = 0.133).ConclusionsThe WPASWI demonstrated good internal consistency, reliability, construct validity and a stronger relationship with PA than a General SW instrument.     

Brazelton Neonatal Behavioral Assessment Scale: A psychometric study in a Portuguese sample

BackgroundThe Neonatal Behavioral Assessment Scale (NBAS, Brazelton &; Nugent, 1995) is an instrument conceived to observe the neonatal neurobehavior. Data analysis is usually performed by organizing items into groups. The most widely used data reduction for the NBAS was developed by Lester, Als, and Brazelton (1982).ObjectiveExamine the psychometric properties of the NBAS items in a sample of 213 Portuguese infants.MethodThe NBAS was performed in the first week of infant life (3 days ± 2) and in the seventh week of life (52 days ± 5).ResultsPrincipal component analyses yielded a solution of four components explaining 55.13% of total variance. Construct validity was supported by better neurobehavioral performance of 7-week-old infants compared with 1-week-old infants.ConclusionChanges in the NBAS structure for the Portuguese sample are suggested compared to Lester factors in order to reach better internal consistency of the scale.     

Échelle de temporalité : validation française d’une version courte de la Zimbardo Time Perspective Inventory (ZTPI)

Lewin (1951, p. 75) defined time perspective as the “totality of the individual's view of his psychological future and psychological past existing at a given time”. Indeed, time perspective is considered to guide behaviors and participate in the construction of personal identity. The Zimbardo Time Perspective Inventory (ZTPI) was constructed by Zimbardo and Boyd (1999) to measure the five dimensions of time perspective (Past-Negative, Past-Positive, Present-Hedonistic, Present-Fatalistic and Future scales) and contained fifty-six items. The ZTPI was validated in more than twenty countries, as well in France (Apostolidis and Fieulaine, 2004) and a short version (15-25 items) was also studied in numerous cultural settings like in USA, Australia and various European countries. Nevertheless, the short version of the ZTPI has never been validated in French. The aim of this study is to validate a brief French measure of the ZTPI (Zimbardo and Boyd, 1999) in order to apply it to adults of all ages. Based on the long ZTPI (fifty-four items) validated by Apostolidis and Fieulaine (2004), we tested a version containing fifteen items, the ZTPI-15, among 466 adults (18-98 years). The exploratory analysis revealed a factorial structure representing five factors comprising three items for each scale. The model was tested through a confirmatory factorial analysis, showing that the ZTPI-15 fit indices were satisfactory (χ²/dl = 2.58, RMSEA =.066, CFI = .90, AGFI =.90, RMSR = .067). Internal consistency and test-retest reliability was verified. Correlations between mean scores of the five factors showed relationships. Present-Fatalistic was related to Past-Negative (r =.23) and to Future (r = −.20), whereas a correlation between Past-Negative and Future (r = −.22) was demonstrated. Moreover, Future related to Past-Positive (r =.12). Age was associated to all scales of the ZTPI-15 and the strongest correlation was to Present-Hedonistic (r = −.31). The comparison between 253 young adults (M = 22.5 years) and 160 older adults (M = 73.3 years) showed that the older were less oriented to Past-Negative and Present-Hedonistic but more to Past-Positive, Present-Fatalistic and Future. Furthermore, educational level was correlated to Fatalistic-Present (r = −.28). The validity of the ZTPI-15 was also confirmed with the scores of anxiety and depression and with the Self-Esteem Scale: individuals with high score of anxiety were oriented to Past-Negative (r = .34) and those with high score of depression were oriented to past-Negative (r = .27) and Fatalistic-Present (r = .27). Finally, individuals with low self-esteem were strongly oriented to Past-Negative (r = −.45) and Present-Fatalistic (r = −.27), and individuals with high self-esteem to Future (r = .28).     

Development and validation of the Body and Appearance Self-Conscious Emotions Scale (BASES)

The purpose of these studies was to develop a psychometrically sound measure of shame, guilt, authentic pride, and hubristic pride for use in body and appearance contexts. In Study 1, 41 potential items were developed and assessed for item quality and comprehension. In Study 2, a panel of experts (N = 8; M = 11, SD = 6.5 years of experience) reviewed the scale and items for evidence of content validity. Participants in Study 3 (n = 135 males, n = 300 females) completed the BASES and various body image, personality, and emotion scales. A separate sample (n = 155; 35.5% male) in Study 3 completed the BASES twice using a two-week time interval. The BASES subscale scores demonstrated evidence for internal consistency, item-total correlations, concurrent, convergent, incremental, and discriminant validity, and 2-week test–retest reliability. The 4-factor solution was a good fit in confirmatory factor analysis, reflecting body-related shame, guilt, authentic and hubristic pride subscales of the BASES. The development and validation of the BASES may help advance body image and self-conscious emotion research by providing a foundation to examine the unique antecedents and outcomes of these specific emotional experiences.     

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 psychometric qualities of a short version of the Experiences in Close Relationships Scale – Revised Child version

The Experiences in Close Relationships Scale – Revised Child version (ECR-RC; Brenning, Soenens, Braet, & Bosmans, 2011a) is a valuable tool for measuring anxious and avoidant attachment to parents in middle childhood and adolescence. However, given its substantial length, the present study aimed to develop an abridged ECR-RC. Four separate samples were used to attain this goal. First (Sample 1, N = 1880; M = 12 years), item selection resulted in a 12-item version, comprising six items for attachment anxiety and six items for attachment avoidance. Next, psychometric properties of this brief ECR-RC were investigated in Sample 1 and cross-validated in an older sample (Sample 2, N = 310; M = 16 years) and in a clinical sample (Sample 3, N = 99; M = 14 years). In all three samples, comparison of the full and reduced ECR-RC revealed similar psychometric properties. In a final sample (Sample 4, N = 110; M = 18 years), we assessed reliability, factor structure and validity when administering the 12-item ECR-RC as a stand-alone instrument. In conclusion, the brief ECR-RC showed excellent reliability and validity.     

Understanding cognitive failures: what's dissociation got to do with it?

Intuitively, cognitive failures and dissociation seem to encompass overlapping mental phenomena. This study used a large sample to examine the nature of the relationship between these constructs. Exploratory factor analysis (EFA) and confirmatory factor analyses were performed on the Cognitive Failures Questionnaire (CFQ). The single factor resulting from the EFA of the CFQ correlated significantly with all factors from the Dissociative Experiences Scale (DES). A conjoint item-level factor analysis using all items from both measures was performed, and two factors resulted. The first included all items from the CFQ and appeared to describe an absorption-like phenomenon. The second factor's highest positively loading items assessed more pathological forms of dissociation. Based on our results, we conclude that the CFQ and DES are assessing similar cognitive processes and that cognitive failures, as measured by the CFQ, overlap with nonpathological dissociation.     

Belief in a just world mediates the relationship between institutional trust and life satisfaction among the elderly in China

This study investigated the relationship between institutional trust and life satisfaction, and the mediating role of belief in a just world (BJW) among the elderly. The General Belief in a Just World Scale (GBJW) and Satisfaction with Life Scale (SWLS) were employed. A self-developed Institutional Trust questionnaire was used to measure participant’ levels of trust in eight institutions. The aggregate score for all eight items represented the level of institutional trust. The questionnaires were completed by 19,352 retirees ranging in age from 50 to 99 (M = 69.7, SD = 8.0). The results showed the following: (1) overall, the retirees tended to report high institutional trust and high life satisfaction; (2) institutional trust was positively associated with life satisfaction; and (3) more importantly, the relationships between institutional trust and life satisfaction were partially mediated by GBJW. This finding provides a new insight into the psychological mechanisms by which institutional trust relates to individual happiness. The theoretical and practical implications of these findings, as well as the study’s limitations, are discussed.