Identifying therapies to effectively reduce alexithymia: A systematic review and meta-analysis

Area of Science:

• Psychology
• Clinical Psychology
• Psychotherapy Research

Background:

• Alexithymia is characterized by difficulties in identifying and describing emotions, externally oriented thinking, and limited imagination.
• Understanding effective interventions for alexithymia is crucial for clinical practice and theoretical advancement.

Purpose of the Study:

• To systematically review and meta-analyze the efficacy of psychological interventions in reducing alexithymia.
• To identify which types of psychological interventions are most effective for alexithymia.
• To compare interventions directly targeting alexithymia with those where it is a secondary outcome.

Main Methods:

• A systematic review and meta-analysis following PRISMA guidelines.
• Inclusion of 59 studies with 53 effect sizes (N=3368) analyzed using meta-analytic techniques.
• Moderation analyses to explore the impact of intervention types.

Main Results:

• Psychological interventions significantly reduced alexithymia levels compared to control conditions (g=-0.52).
• A medium-sized average effect was observed, indicating moderate efficacy.
• Integrative interventions demonstrated the largest effects with minimal heterogeneity.
• No significant differences were found between interventions directly targeting alexithymia versus those measuring it as a secondary outcome.

Conclusions:

• Psychological interventions, particularly integrative ones, are effective in reducing alexithymia.
• The findings contribute to the theoretical and clinical understanding of alexithymia interventions.
• Future research should focus on higher-powered studies, diverse populations, and elucidating intervention mechanisms.