title: Anxiety sensitivity: multiple dimensions and hierarchic structure.
abstract: Anxiety sensitivity (AS) is the fear of anxiety-related sensations, based on beliefs that these sensations have harmful consequences. AS is thought to play an important role as a diathesis for anxiety disorders, particularly panic disorder. Recent evidence suggests that AS has a hierarchical structure, consisting of multiple lower-order factors, which load on a single higher-order factor. If each factor corresponds to a discrete mechanism, then the results suggest that AS arises from a hierarchic arrangement of mechanisms. A problem with previous studies is that they were based on the 16-item Anxiety Sensitivity Index (ASI), which may not contain enough items to reveal the type and number of lower-order factors. Accordingly, we developed the 60-item Anxiety Sensitivity Profile, which was administered to 349 university students. Factor analyses revealed four lower-order factors: (1) Fear of respiratory symptoms, (2) fear of cognitive dyscontrol, (3) fear of gastrointestinal symptoms, and (4) fear of cardiac symptoms. These loaded on a single higher-order factor. The lower-order factors shared variance with the higher-order factor, but also contained unique variance. Thus, the results suggest that AS is the product of a general factor, with independent contributions from four specific factors.
authors.affiliation: Department of Psychiatry, University of British Columbia, Vancouver, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Taylor
authors.forename: B J
authors.initials: BJ
authors.lastname: Cox
mesh_terms: D000293:Adolescent; D000328:Adult; D001007:Anxiety / Q000523:psychology*; D001008:Anxiety Disorders / Q000175:diagnosis / Q000523:psychology; D001143:Arousal; D005239:Fear; D005260:Female; D006801:Humans; D008297:Male; D016584:Panic Disorder / Q000175:diagnosis / Q000523:psychology; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011594:Psychometrics; D012016:Reference Values; D012680:Sensitivity and Specificity; D013001:Somatoform Disorders / Q000175:diagnosis / Q000523:psychology; D013334:Students / Q000523:psychology