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Anxiety sensitivity: confirmatory evidence for a multidimensional construct

B J Cox1, J D Parker, R P Swinson

  • 1Department of Psychology, University of Manitoba, Winnipeg, Canada.

Behaviour Research and Therapy
|July 1, 1996
PubMed
Summary
This summary is machine-generated.

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Anxiety sensitivity is key to understanding panic disorder. Research confirms the 16-item Anxiety Sensitivity Index (ASI) is best viewed as a multidimensional measure, not unidimensional.

Area of Science:

  • Psychology
  • Clinical Psychology
  • Psychometrics

Background:

  • Anxiety sensitivity is a significant psychological construct for understanding clinical anxiety, especially panic disorder.
  • The 16-item Anxiety Sensitivity Index (ASI) has been a focus of debate regarding its dimensionality (unidimensional vs. multidimensional).

Purpose of the Study:

  • To investigate the factor structure of the Anxiety Sensitivity Index (ASI).
  • To determine whether the ASI should be conceptualized as a unidimensional or multidimensional measure in panic disorder patients and student samples.

Main Methods:

  • Confirmatory factor analysis (CFA) was employed to test various ASI models.
  • Data were collected from 216 panic disorder patients and 365 undergraduate students.
  • Multiple goodness-of-fit indicators were used to evaluate model fit.

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Main Results:

  • Confirmatory factor analysis results consistently supported a multidimensional conceptualization of the ASI across both patient and student data.
  • The four-factor model, originally proposed by Peterson and Heilbronner (1987), demonstrated the best fit to the data.
  • Findings indicate the ASI effectively captures multiple dimensions of anxiety sensitivity.

Conclusions:

  • The Anxiety Sensitivity Index (ASI) functions as a multidimensional measure.
  • It is recommended to expand the ASI to enhance its assessment of the multiple dimensions of anxiety sensitivity.
  • This multidimensional approach offers a more nuanced understanding of anxiety sensitivity in relation to panic disorder.