title: The Anxiety Sensitivity Index--Revised: confirmatory factor analyses, structural invariance in Caucasian and African American samples, and score reliability and validity.
abstract: The most commonly used measure of anxiety sensitivity is the 36-item Anxiety Sensitivity Index-Revised (ASI-R). Exploratory factor analyses have produced several different factors structures for the ASI-R, but an acceptable fit using confirmatory factor analytic approaches has only been found for a 21-item version of the instrument. We evaluated the fit of all published factor models for the 36- and 21-item ASI-R, modified the hierarchical model using an approach that does not eliminate items, evaluated the invariance of the modified model across Caucasian and African-American subsamples, and compared the reliability and validity of the 36-item and 21-item versions. The 21-item version of the ASI-R fit a four factor model, as did the 36-item version after several meaningful model modifications. The modified 36-item model was replicable in independent cases and its structural properties were generally invariant across race. Scores from the 36-item version exhibited superior reliability and criterion-related validity.
authors.affiliation: Department of Psychology, University of Southern Mississippi, 118 College Drive #5025, Hattiesburg, MS 39406-5025, USA. Randolph.Arnau@usm.edu
authors.forename: Randolph C
authors.initials: RC
authors.lastname: Arnau
authors.forename: Joshua J
authors.initials: JJ
authors.lastname: Broman-Fulks
authors.forename: Bradley A
authors.initials: BA
authors.lastname: Green
authors.forename: Mitchell E
authors.initials: ME
authors.lastname: Berman
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D001007:Anxiety / Q000175:diagnosis*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011581:Psychological Tests / Q000592:standards; D015203:Reproducibility of Results; D044465:White People