Nijmegen Institute for Scientist-Practitioners in Addiction

Alexithymia is not a stable personality trait in patients with substance use disorders.

TitelAlexithymia is not a stable personality trait in patients with substance use disorders.
PublicatietypeJournal Article
Jaar van publicatie2012
Auteursde Haan HA, Joosten EAG, Wijdeveld AGM, Boswinkel PB, van der Palen J, DeJong CA
UitgavePsychiatry Res
Publicatiedatum2012 Jun 30

The construct of alexithymia as a vulnerability factor for substance use disorders (SUD) is under debate, because of conflicting research results regarding alexithymia as a state or trait phenomenon. The absolute and relative stability of alexithymia were evaluated in a pre-post design as part of a randomised controlled trial, controlling for several co-variates. Assessments were done with the Toronto Alexithymia Scale (TAS-20) and the Addiction Severity Index (EuropASI) at baseline and follow-up of a 3-month trial of inpatient Cognitive Behavioural Therapy (CBT) with or without a Shared Decision Making intervention for 187 SUD patients. Paired sample t-tests and analyses of variance were performed to assess absolute stability, intraclass correlation coefficients were calculated for relative stability and multivariate linear regression models were used to evaluate the relation between co-variates and change in alexithymia. Mean level reduction of total TAS-20 and two subfactors demonstrated no absolute stability, but change in alexithymia differed for patients with low, moderate and high alexithymia scores. Relative stability of alexithymia was moderate to high for the total population, but differed according to low, moderate and high alexithymia scores. The EuropASI "psychiatry" domain, covering anxiety and depression, was related to alexithymia, but CBT-related variables were not. In conclusion, alexithymia is partly a state-dependent phenomenon, but not a stable personality trait in this SUD population.

Alternatieve uitgavePsychiatry Res
PubMed ID22382053