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Effectiveness of rumination-focused cognitive behavioural therapy on internalized shame and interpretation bias in adolescents with social anxiety disorder

Published online by Cambridge University Press:  18 December 2025

Fardokht Farahnak
Affiliation:
Department of Psychology, Ahv.C., Islamic Azad University, Ahvaz, Iran
Sahar Safarzadeh*
Affiliation:
Department of Psychology, Ahv.C., Islamic Azad University, Ahvaz, Iran
*
Corresponding author: Sahar Safarzadeh; Email: s.safarzadeh1152@iau.ac.ir
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Abstract

This study investigates the potential of rumination-focused cognitive behavioural therapy (RFCBT) to address core issues in adolescents with social anxiety disorder (SAD). Specifically, it examines RFCBT’s effectiveness in reducing internalized shame, negative interpretation biases, and rumination, which contribute significantly to their social anxiety. The present study employed a quasi-experimental design with a pre-test, post-test, and follow-up phase. The population of the study included all adolescents with SAD in Ahvaz, Iran, in 2023. The sample consisted of 48 adolescents with SAD who were selected using convenience sampling and then randomly assigned to either the RFCBT group or the control group (24 participants per group). The research instruments included the Social Anxiety Questionnaire, the Child Internalized Shame Scale, the Interpretation Bias Questionnaire, and the Rumination Response Scale (RRS). Repeated measures analysis of variance (ANOVA) was used to analyse the data. The findings indicate that RFCBT had a significant effect on reducing internalized shame, interpretation bias, and rumination (p<0.01) in adolescents with SAD, with results maintained at follow-up. This study adds to the evidence that RFCBT can be helpful for anxiety disorders in adolescents. RFCBT seems to work by addressing negative self-views, biased interpretations, and repetitive negative thinking patterns. More research is needed to determine if these benefits are sustained long-term and if RFCBT can improve social skills and overall well-being for adolescents with social anxiety.

Key learning aims

  1. (1) Understand the efficacy of RFCBT in reducing internalized shame, negative interpretation bias, and rumination in adolescents with SAD.

  2. (2) Gain insight into the cognitive and behavioural mechanisms through which RFCBT addresses core maintaining factors of SAD, such as negative self-perceptions and avoidance behaviours.

  3. (3) Learn about the application of functional analysis, self-compassion training, and cognitive restructuring within RFCBT to disrupt maladaptive thought patterns in adolescents.

  4. (4) Recognize the potential of group-based RFCBT to foster peer support and enhance treatment engagement among adolescents with SAD.

  5. (5) Explore the study’s findings on the sustainability of RFCBT outcomes at follow-up and their implications for long-term management of social anxiety symptoms.

Information

Type
Original Research
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of British Association for Behavioural and Cognitive Psychotherapies
Figure 0

Table 1. Content of rumination-focused cognitive behavioural therapy (RFCBT)

Figure 1

Table 2. Means, standard deviations (SD), and Shapiro–Wilk statistics for internalized shame and interpretation bias

Figure 2

Table 3. Results of repeated measures ANOVA for the effect of RFCBT on internalized shame and interpretation bias

Figure 3

Table 4. Results of Bonferroni post-hoc tests for internalized shame and interpretation bias scores at the three stages

Figure 4

Figure 1. Changes in internalized shame (a), interpretation bias (b), and rumination (c) scores in RFCBT and control groups.

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