Melanie W. Moretz

Confirming the Three-Factor Structure of the Disgust Scale—Revised in Eight Countries

The current study evaluates the factor structure of the Disgust Scale—Revised (DS-R) in eight countries: Australia, Brazil, Germany, Italy, Japan, the Netherlands, Sweden, and the United States (N = 2,606). Confirmatory factor analysis is used to compare two different models of the DS-R and to investigate the invariance of the factor structure of the DS-R across countries and gender. A three-factor solution consisting of three different but interrelated disgust factors (a 12-item core disgust factor, an 8-item animal-reminder disgust factor, and a 5-item contamination disgust factor) best accounted for the data in all countries except the Netherlands. Relative to the United States, the three-factor solution is invariant in Australia, Brazil, and Japan but not in Germany, Italy, the Netherlands, and Sweden. The three-factor solution is also invariant across gender in most countries. The implications of these cross-cultural findings for promoting a more valid and reliable assessment of disgust dimensions, as assessed by the DS-R, are discussed.

Disgust vulnerability and symptoms of contamination-based OCD: descriptive tests of incremental specificity.

The present investigation examines the incremental association between disgust propensity and sensitivity and contamination-based obsessive-compulsive disorder (OCD) symptoms. Structural equation modeling in Study 1 indicated that general disgust was related to contamination fear even when controlling for negative affect in a nonclinical sample. Evidence was also found for a model in which the effect of negative affect on contamination fear is mediated by general disgust. Study 1 also showed that both disgust sensitivity and disgust propensity uniquely predicted contamination fear when controlling for negative affect. Growth curve analyses in Study 2 indicated that higher baseline contamination fear is associated with less reduction in contamination fear over a 6-week period as disgust sensitivity increases even when controlling for negative affect. Lastly, disgust propensity was associated with concurrent levels of excessive washing symptoms among patients with OCD in Study 3 when controlling for depression. Implications of these findings from nonclinical, analogue, and clinical samples for future research on the specificity of disgust-related vulnerabilities in the etiology of contamination concerns in OCD are discussed.

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.

Factor Structure and Psychometric Properties of the Injection Phobia Scale-Anxiety

The present investigation examined the factor structure and psychometric properties of the Injection Phobia Scale-Anxiety (IPS-Anx). Principal components analysis of IPS-Anx items in Study 1 (n = 498) revealed a 2-factor structure consisting of Distal Fear and Contact Fear. However, CFA results in Study 2 (n = 567) suggest that a 1-factor structure may be more parsimonious. IPS-Anx scores demonstrated excellent reliability including test-retest over a 12-week period in Study 3 (n = 195). Supportive evidence for convergent and divergent validity of IPS-Anx scores was also found in Study 4 (n = 319), with strong associations with disgust propensity and sensitivity and weak associations with positive affect. Further evidence of validity was found in Study 5 (n = 1,674) because IPS-Anx scores discriminated those who have experienced fainting symptoms or avoided medical procedures from those without a history of such symptoms. In Study 6, data from Studies 2 through 5 were pooled, and the findings of Study 2 were replicated. The 1-factor model also fit the data well for men and women in Study 6. Lastly, IPS-Anx scores differentiated those with blood-injection-injury phobia (n = 39) from those without this phobia (n = 43) in Study 7. These findings suggest that the IPS-Anx has excellent psychometric properties, making it suitable for use in programmatic research on injection phobia. However, future research examining the validity of a short form of the scale with only the Contact Fear items may further improve the efficiency and utility of the IPS-Anx.

Dimensional Diagnosis of Anxiety in Youth

The diagnosis of anxiety disorders in children and adolescents is associated with several problems including high comorbidity and low clinical utility of diagnostic categories. This chapter will begin by outlining the weaknesses of the current categorical diagnostic system and reviewing the history and evidence for taking a dimensional approach to the diagnosis of anxiety disorders in children and adolescents. The problem of the high comorbidity of anxiety and depression in youth will be discussed, followed by a review of several quantitative structural models which have been proposed to differentiate between the shared and specific components of anxiety and depression. Based on the research indicating that anxiety disorders are best classified as highly correlated symptom clusters comprising internalizing syndromes, approaches to assessment and diagnosis will be covered in the last section of this chapter. Tools that have been validated to measure anxiety and depression dimensionally in youth will be presented, as well as measurement of narrow traits that have been found to put children and adolescents at risk for the development of pathological anxiety. Finally, we will discuss the need to move toward a system of classification that corresponds more directly to effective interventions for anxiety disorders in youth.

The Role of Disgust in Childhood Anxiety Disorders

During the past several years, there has been extensive research into the role of disgust in a wide range of psychopathology (Olatunji & McKay, 2007). Most of this research has focused on anxiety disorders where disgust may figure prominently in avoidance. The early work in this area focused on specific phobias and avoidance of contact with disease and contagion (Matchett & Davey, 1991). Since that time, the range and nature of disgust’s involvement in psychopathology has become refined and includes a multifaceted conceptualization, drawing on the postulates of the emotion as described by Rozin and Fallon (1987). This chapter focuses on the conjoint roles of disgust and development in childhood anxiety.