Assessment of Alexithymia: Psychometric Properties of the Psychological Treatment Inventory-Alexithymia Scale PTI-ASReportar como inadecuado




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Background: The aim of this study is to investigate the psychometric properties of a new measure of alexithymia, the Psychological Treatment Inventory-Alexithymia Scale PTI-AS. Method: A group of 778 participants completed the PTI-AS. In order to evaluate aspects of concurrent validity, a part of the sample n = 116 completed the PTI-AS, the Twenty-Items Toronto Alexithymia Scale TAS-20 and the Bermond-Vorst Alexithymia Questionnaire BVAQ. In order to evaluate aspects of discriminant validity a group of patients with a diagnosis of Eating Disorders completed the PTI-AS, the TAS-20 and the Eating Disorders Inventory EDI-3. Results: Exploratory Factor Analysis EFA showed a solid structure with one factor. Results were confirmed by Confirmatory Factor Analysis CFA, which yielded good fit indices CFI = .98; TLI = .95; RMSEA = .08; SRMR = .04. The PTI Alexithymia Scale showed a good degree of internal consistency α = .88. Correlations between the PTI Alexithymia Scale, the TAS-20 r = .74, p < .001 and the BVAQ r = .40, p < .001 were statistically significant, supporting the scale’s concurrent validity. Conclusion: Thanks to its good psychometric properties the PTI-AS can be considered as a brief and useful measure for assessing alexithymia.

KEYWORDS

Alexithymia; Personality Tests; Psychological Assessment; Psychometrics; AffectiveSymptoms

Cite this paper

Gori, A. , Giannini, M. , Palmieri, G. , Salvini, R. & Schuldberg, D. 2012. Assessment of Alexithymia: Psychometric Properties of the Psychological Treatment Inventory-Alexithymia Scale PTI-AS. Psychology, 3, 231-236. doi: 10.4236-psych.2012.33032.





Autor: Alessio Gori, Marco Giannini, Giulia Palmieri, Roberta Salvini, David Schuldberg

Fuente: http://www.scirp.org/



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