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A taxometric analysis of health anxiety

Published online by Cambridge University Press:  19 May 2008

E. Ferguson
E. Ferguson*
Affiliation:
Risk Analysis, Social Processes and Health (RASPH) Group, School of Psychology, University of Nottingham, UK
*
*Address for correspondence: Professor E. Ferguson, Risk Analysis, Social Processes and Health (RASPH) Group, School of Psychology, University of Nottingham, Nottingham NG7 2RD, UK. (Email: [email protected])
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Abstract

Background

A long-standing issue in the health anxiety literature is the extent to which health anxiety is a dimensional or a categorical construct. This study explores this question directly using taxometric procedures.

Method

Seven hundred and eleven working adults completed an index of health anxiety [the Whiteley Index (WI)] and indicated their current health status. Data from those who were currently healthy (n=501) and receiving no medical treatment were examined using three taxometric procedures: mean above minus below a cut (MAMBAC), maximum eigenvalue (MAXEIGEN) and L-mode factor analysis (L-MODE).

Results

Graphical representations (comparing actual to simulated data) and fit indices indicate that health anxiety is more accurately represented as a dimensional rather than a categorical construct.

Conclusions

Health anxiety is better represented as a dimensional construct. Implications for theory development and clinical practice are examined.

Keywords

Assessmentdiagnosishypochondriasismeasurementtaxometric
Type
Original Articles
Information
Psychological Medicine , Volume 39 , Issue 2 , February 2009 , pp. 277 - 285
Copyright
Copyright © 2008 Cambridge University Press

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