Psychology and Psychotherapy: Theory, Research and Practice

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Volume 79 Issue 1 (March 2006), Pages 1-149

The 20‐item Toronto Alexithymia Scale: Validation of factor solutions using confirmatory factor analysis on physiotherapy out‐patients (pages 83-88)

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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