Data di Pubblicazione:
2023
Abstract:
Alexithymia is a multidimensional construct characterized by difficulty in identifying and
describing feelings. Considering that the assessment of alexithymia in adolescents is very
difficult, the aim of the present study was to examine the TAS-20 psychometric properties and its
efficiency among a sample of Italian adolescents. In order to achieve this goal, the Rasch model,
partial credit (PCM) specification with joint maximum likelihood estimation, was used. The Rasch
results were used to select a set of items with high validity and discriminating power for
adolescents, without any loss in measurement invariance. The final brief 10-item version of the
scale, TAS-10, resulted to be valid and reliable: its correlation with the original 20-item score
was remarkably high and the network with convergent and divergent measures gave the expected
relationships. Furthermore, the concordance of the classification obtained from the 20 and 10-item
versions was adequate, but the latter had the noticeable quality of reducing the quota of possible
alexithymic adolescents, distinguishing non-alexithymic or alexithymic persons from those who are
not clearly classified. Finally, the TAS-10 is definitively more suitable for adolescents in
clinical and research practice.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Giorgia Molinengo, Annunziata Romeo, Tommaso Trombetta, Luca Rolle, Lorys Castelli, Barbara Loera
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