کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
316355 537720 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Toronto alexithymia scale for patients with eating disorder: Of performance using the non-parametric item response theory
ترجمه فارسی عنوان
مقیاس آلکنتیمیا تورنتو برای بیماران مبتلا به اختلال خوردن: از عملکرد با استفاده از نظریه پاسخ ناپذیر پارامتری
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی روانپزشکی بیولوژیکی
چکیده انگلیسی

BackgroundThe aim of this study was to investigate the performance of the Toronto Alexithymia Scale (TAS-20) in patients with eating disorders. As a secondary objective, we analyzed a subset of items in order to determine whether the total score is a good tool for classifying these patients and whether the items are ordered according to the difficulty of choosing a particular answer depending on the severity of the patient's condition.Subjects and MethodsWe administered the TAS-20 to 103 consecutive patients who met DSM-IV-R criteria for anorexia nervosa, bulimia nervosa, or eating disorders not otherwise specified. Mokken scale analysis, nonparametric item response theory (NIRT), and confirmatory factor analysis (CFA) were used to test the psychometric properties of the scale. To improve our understanding of the structure underlying the TAS-20, we used an automated item selection procedure based on the Mokken scale.ResultsWe identified a subset of 13 independent and clinically interpretable items that are potentially sufficient to rate patients with alexithymia. This subset was considered a unidimensional reduction of the TAS-20. However, the scale composed of this subset needs to be validated. Thirteen of the 20 items were maximally related to alexithymia because they have a one-dimensional structure. The NIRT and CFA enabled us to identify a maximal subset of items that conform to the requirements for good measurement of alexithymia in patients with eating disorders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comprehensive Psychiatry - Volume 55, Issue 5, July 2014, Pages 1285–1291
نویسندگان
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