Swift L, Stephenson R, Royce J. The 20-item Toronto Alexithymia Scale: validation of factor solutions using confirmatory factor analysis on physiotherapy out-patients.
Psychol Psychother 2006;
79:83-8. [PMID:
16611423 DOI:
10.1348/147608305x42875]
[Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE
Whilst the 20-item Toronto Alexithymia Scale (TAS-20) was developed to measure three intercorrelated dimensions, there is some debate as to whether the scale is best served by a two- or three-factor construct. In particular, there is some doubt as to whether clinical data exhibit the third factor. This study uses data from a sample of physiotherapy (physical therapy) out-patients in the UK to validate the factorial structure of a set of models postulated in the literature, including the three-factor model hypothesized by Bagby et al. (1994).
METHOD
Data were collected from a sample of physiotherapy out-patients (N=242). Specialist factor analysis software (LISREL 8.54) was used to perform confirmatory factor analyses on a range of models proposed in the literature.
RESULTS
The analysis supports the three-factor model assumed by Bagby et al. (1994), as well as most of the two-factor models suggested in the literature.
CONCLUSIONS
This new set of clinical data supports most of the two- and three-factor models postulated in the recent literature, including the three-factor model advocated by Bagby et al. (1994).
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