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- Title
Factor structure of the Greek translation of the Scale for the Assessment of Thought, Language and Communication.
- Authors
Andreou, Christina; Bozikas, Vasilis P.; Papouliakos, Ioannis; Kosmidis, Mary H.; Garyfallos, George; Karavatos, Athanasois; Nimatoudis, Ioannis
- Abstract
Objective: The Scale for the Assessment of Thought, Language and Communication (TLC) is a widely used instrument for the assessment of formal thought disorder. TLC disorders were initially conceptualized as having only two underlying dimensions, a negative and a positive one. But studies of the factorial structure of the TLC have not provided confirmation for the positive-versus-negative distinction. The aim of the present study was to assess the factorial structure of the Greek translation of the TLC. Method: Subjects were 103 patients (69 male, 34 female) with psychotic disorders randomly recruited from both inpatient and outpatient facilities. The TLC was assessed by two raters based on a 20 min clinical interview. Results: Principal component analysis with varimax rotation yielded a three-factor structure; the three factors consisted off items reflecting (i) disorganization of speech; (ii) peculiarities of speech; and (iii) verbosity. The disorganization factor could be further divided into two dimensions reflecting disturbances in the flow of ideas and in the structure of speech. Conclusion: The investigation of the factorial structure of the Greek translation of the TLC scale found no support for the positive-versus-negative distinction of TLC disorders. Three factors (disorganization, speech peculiarities, and verbal productivity) were found to underlie the variance of the scale.
- Subjects
PSYCHOLOGICAL research; FACTOR analysis; COMMUNICATIVE disorders research; THOUGHT &; thinking; PSYCHIATRIC treatment; PSYCHOSES; SPEECH disorders; FACTORIAL experiment designs; FACTOR structure; NEUROPSYCHOLOGY; PSYCHOLOGY
- Publication
Australian & New Zealand Journal of Psychiatry, 2008, Vol 42, Issue 7, p636
- ISSN
0004-8674
- Publication type
Article
- DOI
10.1080/00048670802119721