Linking cognitive avoidance and GAD symptoms: The mediating role of fear of emotion

Although cognitive avoidance has been linked to generalized anxiety disorder (GAD), the mechanism that may account for this association has not been fully elucidated. The current study uses structural equation models to evaluate the relationship between cognitive avoidance and symptoms of GAD in a large unselected sample (n = 1220), and to examine whether subjective fear of emotion partially mediate this relationship. Results support partial mediation, and follow-up analyses suggest that the pattern of relations among fear of emotion, cognitive avoidance, and GAD symptoms is invariant for men and women. However, subsequent analysis revealed equivalence of meditational models where cognitive avoidance leads to GAD symptoms and vice versa. The implications of these findings for better understanding the etiology, maintenance, and treatment of GAD are discussed.     

Fear Learning in Veterans With Combat-Related PTSD Is Linked to Anxiety Sensitivity: Evidence From Self-Report and Pupillometry

Several studies have observed heightened Pavlovian fear conditioning in PTSD. However, it is unclear how fear conditioning in PTSD is related to risk factors for the disorder, such as anxiety sensitivity. Fifty-one combat-exposed veterans (20 with PTSD, 31 without PTSD) completed a differential fear conditioning task in which one colored rectangle (CS +) predicted a loud scream (US), whereas a different colored rectangle (CS-) predicted no US. Veterans with PTSD were characterized by greater anxiety to the CS + but not the CS- during acquisition and extinction, and greater US expectancy during the CS + but not the CS- at extinction. Also, veterans with PTSD had greater pupil dilation to both CSs at extinction, but not at acquisition. Anxiety sensitivity was correlated with anxiety and US expectancy in response to the CS +, but not the CS-, at both acquisition and extinction, and also with pupil diameter to both the CS + and CS- at extinction. Nearly all of these relations held when covarying for PTSD symptoms and trait anxiety. These findings suggest that increased fear conditioning in PTSD may be related to elevated anxiety sensitivity.     

Influence of liquid state diffusion on joint microstructure developed during transient liquid phase bonding of dissimilar superalloys

Theoretical prediction of the influence of liquid-state diffusion on the joint microstructure developed during transient liquid phase (TLP) bonding of dissimilar superalloys, based on asymmetric numerical simulation model, is experimentally verified. A new understanding of the diffusional solidification mechanism during TLP bonding has enabled the formation of a single-crystal (SX) joint microstructure between dissimilar polycrystalline and SX substrates, which is considered unachievable by conventional TLP bonding theoretical models.     

Disgust,scrupulosity and conservative attitudes about sex: Evidence for a mediational model of homophobia

In the present study, core disgust predicted negative attitudes toward homosexuals even after controlling for contamination fear. The effect of core disgust on negative attitudes toward homosexuals was indirect, partially mediated by conservative sexual attitudes and religiosity. The effects of religious principles on negative attitudes toward homosexuals were indirect, via conservative sexual beliefs. These results establish a link between disgust and negative attitudes towards homosexuals that is not fully accounted for by contamination concerns, but rather is partially accounted for by conservative sexual ideology and religiosity.     

The moderating effects of contamination sensitivity on state affect and information processing: examination of disgust specificity

Although contamination sensitivity has been implicated in several disorders, there is a paucity of research examining the influence of this trait on various outcomes. Accordingly, the present study examined the extent to which individual differences in contamination sensitivity moderated state affect in response to a mood induction and subsequent information processing biases, as assessed by a lexical decision task (LDT). It was hypothesised that the moderating effects of contamination sensitivity would be specific to disgust responding to a negative but not positive mood induction, and to reaction times to disgust and fear compared to happy words on the LDT. The findings were largely consistent with this hypothesis, as contamination sensitivity predicted increased disgust and arousal to the negative mood induction. Contamination sensitivity was also a better predictor of reaction times to disgust and fear words than happy words. However, the moderating effect of contamination sensitivity on reaction times on the LDT was not mediated by its effects on response to the negative mood induction. Implications of these findings for conceptualising the role of contamination sensitivity and its association with disgust in specific disorders are discussed.     

Measurement of anxious traits: a contemporary review and synthesis

Trait anxiety is a characteristic predisposition to appraise stimuli as threatening and respond with anxiety. Trait anxiety is proposed to serve as a vulnerability factor for greater frequency and intensity of anxiety experiences as well as the development of anxious pathology. Cognitive, behavioral, and physiological components of trait anxiety have been described. Common self-report measures of trait anxiety are reviewed with an emphasis on: components assessed, factor structure, internal consistency, reliability, and construct validity. Measures were selected if instructions ask individuals to endorse items based on their characteristic, rather than a time sensitive, response. Selection criteria resulted in a focus on the following measures: the State-Trait Anxiety Inventory (STAI), Beck Anxiety Inventory-Trait (BAIT), Cognitive Somatic Anxiety Questionnaire (CSAQ), Endler Multidimensional Anxiety Scales-Trait (EMAS-T), Four Systems Anxiety Questionnaire (FSAQ), State-Trait Inventory for Cognitive and Somatic Anxiety (STICSA), and the Three Systems Anxiety Questionnaire (TSAQ). While the STAI has the advantage of normative data and frequent use in prior research, newer measures, such as the BAIT and the STICSA, demonstrate greater discriminant validity. The strengths and weaknesses of each of the reviewed measures are highlighted. Recommendations for measure selection and future research are provided.     

Development and initial validation of the medical fear survey-short version

The present investigation employs item response theory (IRT) to develop an abbreviated medical fear survey (MFS). Application of IRT analyses in study 1 (n = 931) to the original 50-item MFS resulted in a 25-item shortened version. Examination of the location parameters also resulted in a reduction of the Likert-type scaling of the MFS by removing the last response category ("terror"). The five subscales of the original MFS were highly correlated with those of the MFS-short version. The short version also displayed comparable convergent and discriminant validity with the original MFS in relation to measures of fear, disgust, and anxiety. Confirmatory factor analysis in Study 2 revealed that the five-factor structure of the MFS-short form fit the data well in U.S. (n = 283) and Dutch (n = 258) samples. The short form also had comparable convergent and discriminant validity with the original MFS in relation to domains of disgust in both samples. Receiver operating characteristic (ROC) analysis in Study 3 demonstrated that the subscales of the short version were comparable with the original MFS in classifying participants high (n = 40) and low (n = 40) in blood/injection phobia. Last, structural equation modeling in Study 4 (n = 113) revealed that the MFS-short form demonstrated excellent convergent/discriminant validity with strong associations with injection fear and no association with spider fear. These findings suggest that the MFS-short form has considerable strengths, including decreased assessment time, while retaining sound psychometric properties.