Characteristics of perceived electromagnetic hypersensitivity in the general population

Health problems evoked in the presence of electrical equipment is a concern, calling for better understanding for characteristics of electromagnetic hypersensitivity (EHS ) in the general population. The present study investigated demographics, lifestyle factors, frequency and duration, coping strategies, proportion meeting clinical criteria for intolerance attributed to electromagnetic fields (EMF ) and comorbidity. Using data from a large‐scale population‐based questionnaire study, we investigated persons with self‐reported (n = 91) EHS in comparison to referents (n = 3,250). Middle age, female sex and poor perceived health was found to be associated with EHS . More than 50% in the EHS group reported having EMF ‐related symptoms more often than once a week, and the mean number of years experiencing EHS was 10.5. More than half of the EHS group reported that their symptoms started after a high‐dose or long‐term EMF exposure, that they actively tried to avoid EMF sources and that they mostly could affect the EMF environment. A minority of the EHS group had sought medical attention, been diagnosed by a physician or received treatment. Exhaustion syndrome, anxiety disorder, back/joint/muscle disorder, depression, functional somatic syndrome and migraine were comorbid with EHS . The results provide ground for future study of these characteristic features being risk factors for development of EHS and or consequences of EHS .     

Authoritarianism,Cognitive Rigidity,and the Processing of Ambiguous Visual Information

Intolerance of ambiguity and cognitive rigidity are unifying aspects of authoritarianism as defined by Adorno, Frenkel-Brunswik, Levinson, and Sanford (1982/1950), who hypothesized that authoritarians view the world in absolute terms (e.g., good or evil). Past studies have documented the relationship between authoritarianism and intolerance of ambiguity and rigidity. Frenkel-Brunswik (1949) hypothesized that this desire for absolutism was rooted in perceptual processes. We present a study with three samples that directly tests the relationship between right wing authoritarianism (RWA) and the processing of ideologically neutral but ambiguous visual stimuli. As hypothesized, in all three samples we found that RWA was related to the slower processing of visual information that required participants to recategorize objects. In a fourth sample, RWA was unrelated to speed of processing visual information that did not require recategorization. Overall, results suggest a relationship between RWA and rigidity in categorization.     

Time-Varying and Time-Invariant Dimensions in Intolerance of Uncertainty: Specificity in the Prediction of Obsessive-Compulsive Symptoms

Intolerance of uncertainty (IU) is the tendency to respond negatively toward uncertain situations. IU consists of a Prospective factor (desire for predictability) and an Inhibitory factor (uncertainty paralysis) and is central to theoretical approaches to obsessive-compulsive disorder (OCD). However, time-invariant (TI) and time-varying (TV) components of IU and their association with OCD symptoms are not yet understood. The present study examined the association between TI and TV components of IU and OCD symptoms in community adults (N = 1,280) over a 5-month period. Latent variable models were fit to the data to examine the relative impact of TI and TV components of IU on OCD symptoms. As a test of specificity, models examining the association between TI and TV components of IU and depressive symptoms were also examined. The results showed that IU consists of significant TI and TV components, although the TI component accounted for most of the variance (76–84%) and was more strongly associated with OCD and depressive symptoms than the TV component. Furthermore, the TI component of IU was strongly associated with OCD symptoms when controlling for depressive symptoms, and the TI component of IU was strongly associated with depressive symptoms when controlling for OCD symptoms. A consistent pattern was observed for both Prospective and Inhibitory IU factors, with stable TI components demonstrating stronger relations with OCD and depressive symptoms than TV components. These findings have implications for conceptualizing the TI component of IU as a risk for OCD and other emotional disorders.     

Enhancing Inhibitory Learning: The Utility of Variability in Exposure

Exposure therapy has strong empirical support as a treatment for anxiety and related disorders, yet not all participants see clinically meaningful reduction in symptoms, and some experience return of fear. In this review, we examine the theoretical models of exposure therapy, from early precursors to the contemporary inhibitory learning model. The inhibitory learning model is applied to examine one potential method of improving outcomes in exposure therapy: increasing variability in the progression of the exposure hierarchy. We explore mechanisms that support the use of variability in exposure, including the violation of expectancies to enhance learning. In addition, the role of intolerance of uncertainty in anxiety is examined; variable exposure therapy could target this transdiagnostic mechanism in anxiety and related disorders. Suggestions for future research are then offered.     

Look before you leap: the role of negative urgency in appraisals of ambiguous and unambiguous scenarios in individuals high in generalized anxiety disorder symptoms

Negative interpretation bias, the propensity to make threatening interpretations of ambiguous information, is associated with symptoms of generalized anxiety disorder (GAD). Apart from its relationship with intolerance of uncertainty (IU), little is known about what explains the presence of this cognitive bias in GAD. One factor may be negative urgency (NU), the tendency to take rash action when distressed, which is related to GAD symptoms and to cognitive biases in nonclinical populations. The aim of the present study was to examine the relationship between NU and interpretation bias in individuals high in GAD symptoms (N = 111). IU, trait anxiety, and other forms of impulsivity were examined concurrently as competing correlates of interpretation bias. Greater NU and IU were found to be unique correlates of greater threatening interpretations of ambiguous scenarios. Greater NU was also a unique correlate of greater threatening interpretations of negative and positive scenarios. No other forms of impulsivity were uniquely related to interpretation bias. The findings suggest that greater NU may have a role in the tendency for individuals high in GAD symptoms to make threatening interpretations in response to ambiguous scenarios, overtly threatening situations, and situations without indication of threat or danger. Theoretical implications of these findings are discussed.     

Sex Differences in Psychological Factors Associated with Social Discounting

The social discounting paradigm is a powerful means of quantifying altruism in humans, who are typically willing to forgo some amount of personal earnings in exchange for increased earnings for another person. The amount of money that people are willing to forgo decreases with increasing social distance. In this study, we examined variables related to sex, intolerance of uncertainty, and empathy, all of which are theorized to affect the social discounting rate. Participants (27 men and 28 women) completed measures of intolerance of uncertainty, empathy, and social discounting. We found sex differences in psychological predictors of social discounting: in women, empathy (but not intolerance of uncertainty) predicts the social discounting rate, while in men, social discounting is associated with intolerance of uncertainty (but not empathy). Possible neurobiological, social, and cognitive explanations for this sex difference are discussed. Copyright © 2015 John Wiley & Sons, Ltd.     

Perceived willpower self-efficacy fluctuates dynamically with affect and distress intolerance

People may experience subjective shifts in their self-efficacy for exerting willpower over time and based on context, and people who struggle with self-control may be particularly vulnerable to willpower self-efficacy fluctuations. Across four samples (college students without borderline features: n = 49; borderline features group: n = 50; current smokers: n = 61; chronic dieters: n = 92), participants completed one week of ecological momentary assessment (EMA) where momentary self-efficacy for willpower, positive affect, negative affect, tiredness, and distress intolerance were assessed randomly seven times per day. Results revealed that higher willpower self-efficacy was associated with lower negative affect and greater positive affect, and, lower willpower self-efficacy predicted subsequent distress intolerance via time-lagged analyses for the borderline features group.     

A two-week monitoring of self-reported arousal, worry and attribution among persons with annoyance attributed to electrical equipment and smells

Non-patients attributing annoyance to either smells (smell annoyed; SA, n= 29) or electrical equipment (electrically annoyed; EA, n= 17), or both (generally annoyed; GA, n= 38), were monitored for 2 weeks through daily self-ratings of arousal (stress), sleep disturbances, health complaints, worry about hypersensitivity reactions, avoidance behaviors, and attributions of health complaints to electrical equipment and smells. In parallel, a demographically matched reference group was followed (n= 56). GA persons reported higher arousal (stress), more subjective health complaints, and more sleep disturbances than the other groups. About 60% in the GA and EA groups reported intentional avoidance behavior, compared to 31% in the SA group and 2% of the referents. Worry and attribution to environmental factors was also more frequent among GA persons than in the other groups. Thus, even at sub-clinical levels, environmental annoyance generalized to several triggers seems to be associated with behaviors commonly observed among patients with idiopathic environmental intolerance.     

大学生自我概念清晰性与社交焦虑的关系：多重中介效应分析

为了考察大学生自我概念清晰性对社交焦虑的影响,以及拒绝敏感性和无法忍受不确定性的中介作用,采用自我概念清晰性问卷、拒绝敏感性问卷、无法忍受不确定性量表和社交回避及苦恼量表对890名在校大学生进行问卷调查。结果表明：大学生的自我概念清晰性既可以直接负向预测社交焦虑,也可以通过拒绝敏感性、无法忍受不确定性以及二者的链式中介影响社交焦虑,但链式中介作用较弱。因此,大学生的自我概念清晰性是通过降低其拒绝敏感性和无法忍受不确定性,进而缓解大学生的社交焦虑。     

人格特质对考试焦虑的影响:多重中介效应分析

目的:探讨自尊、惧怕负面评价及无法忍受不确定性在人格特质和考试焦虑间的中介作用。方法:采用人格问卷简式量表EPQ-RSC、Rosenberg自尊问卷、惧怕负面评价量表简表、无法忍受不确定性量表和考试焦虑量表测量410名在校高中生和大学生。结果:(1)相关分析表明,神经质、惧怕负面评价、无法忍受不确定性及考试焦虑之间彼此正相关显著;外向性与自尊正相关显著,与惧怕负面评价、无法忍受不确定性及考试焦虑等负相关显著;精神质与自尊、惧怕负面评价及考试焦虑等负相关显著;自尊与神经质、惧怕负面评价、无法忍受不确定性及考试焦虑负相关显著。(2)回归分析表明,人格特质中的神经质和精神质能显著预测考试焦虑,无法忍受不确定性在人格特质和考试焦虑之间起部分中介作用;结构方程模型分析结果显示,人格特质中神经质和精神质对考试焦虑的直接效应显著,经由自尊、惧怕负面评价和无法忍受不确定性对考试焦虑的间接效应也极为显著。结论:自尊、惧怕负面评价和无法忍受不确定性在人格特质与考试焦虑间起着中介作用。