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Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat

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Factor mixture modeling of anxiety sensitivity: a three-class structure.

Nicholas P Allan¹, Kristina J Korte¹, Daniel W Capron¹

¹Department of Psychology, Florida State University.

Psychological Assessment

|July 29, 2014

Summary

Anxiety sensitivity (AS) is a dimensional-categorical construct. This study identified three distinct classes of AS, impacting anxiety and depression symptoms, with implications for clinical assessment.

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Area of Science:

Psychology
Clinical Psychology
Psychometrics

Background:

Anxiety sensitivity (AS) is a multidimensional construct linked to anxiety and depression.
Recent research suggests AS may be a dimensional-categorical construct, not purely dimensional.
Understanding AS's latent structure is crucial for its role in psychopathology.

Purpose of the Study:

To examine the latent structure of anxiety sensitivity (AS) using factor mixture modeling.
To identify distinct classes of individuals based on AS factor levels and relations.
To investigate the relationship between identified AS classes and anxiety/depression symptoms.

Main Methods:

Factor mixture modeling was applied to a sample of 1,151 college students.
Latent classes of anxiety sensitivity were identified based on factor analysis.
Mean levels of anxiety and depression symptoms were compared across identified AS classes.

Main Results:

The best-fitting model identified three distinct classes of anxiety sensitivity: normative, moderate, and high.
Relations between AS factors differed across classes, being strongest in the normative class.
Significant differences in anxiety and depression symptoms were observed across classes, excluding social anxiety disorder.

Conclusions:

This study provides empirical support for anxiety sensitivity as a dimensional-categorical construct with three distinct classes.
Findings suggest tailored clinical approaches may be beneficial for individuals in different AS classes.
The identification of a third AS class has implications for developing specific assessment cut-scores and targeted interventions.