Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trial

Assertiveness training has been an essential component in cognitive-behavioral therapy (CBT), for example, in the treatment of social anxiety and in dialectical behavioral therapy. However, the assertiveness construct has garnered little attention in recent clinical research. The objective of this s...

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Main Authors: Tobias Hagberg, Patrik Manhem, Martin Oscarsson, Fiona Michel, Gerhard Andersson, Per Carlbring
Format: Article
Language:English
Published: Elsevier 2023-04-01
Series:Internet Interventions
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214782923000295
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author Tobias Hagberg
Patrik Manhem
Martin Oscarsson
Fiona Michel
Gerhard Andersson
Per Carlbring
author_facet Tobias Hagberg
Patrik Manhem
Martin Oscarsson
Fiona Michel
Gerhard Andersson
Per Carlbring
author_sort Tobias Hagberg
collection DOAJ
description Assertiveness training has been an essential component in cognitive-behavioral therapy (CBT), for example, in the treatment of social anxiety and in dialectical behavioral therapy. However, the assertiveness construct has garnered little attention in recent clinical research. The objective of this study was to investigate the efficacy of an eight-week transdiagnostic stand-alone internet-based CBT intervention specifically aimed at increasing levels of assertive behavior. Following inclusion, we randomized N = 210 participants into three groups: therapist-guided self-help, unguided self-help, and a wait-list control condition. After a one-year follow-up, we employed a linear mixed model to estimate the effects at both post-test and follow-up for the primary outcome measures of assertiveness, Adaptive and Aggressive Assertiveness Scales, the Rathus Assertiveness Schedule, and secondary outcome measures of anxiety, depression, and general well-being. We also assessed reliable clinical change. Compared to the wait list at the post-treatment, estimated between-group effect sizes on self-rated adaptive assertiveness were statistically equivalent for the two treatment groups both at the post and at the one-year follow-up time points, ranging from ES = 0.95 to 1.73, with reliable clinical recovery proportions from 19 % to 36 %. The increase in aggressive assertiveness ranged from ES = 0.62 to 0.90 compared to the wait-list condition at post. For social anxiety symptoms, the effects compared to the wait list at post-treatment ranged from ES = 0.67 to 0.93, with a reliable clinical recovery rate from 16 % to 26 %. For self-assessed well-being, the effects compared to the wait list at post ranged from ES = 0.70 to 1.05. No effects were observed for generalized anxiety, although within-group evidence was found for a medium effect on depression one year after treatment. Overall, the two treatment conditions produced similar effects. In general, participation increased healthy assertive expressions regardless of treatment condition, all the while reducing self-assessed social anxiety and, over time, possibly also depression. Participation also improved general well-being. The findings demonstrate that the assertiveness construct can be a suitable target for intervention, with reductions of both psychiatric symptoms and non-syndromal problems in daily life. The study was preregistered at ClinicalTrials.gov (NCT04240249).
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spelling doaj.art-0ba1d9be6e524416a894d1b8bbdabba12023-05-25T04:24:28ZengElsevierInternet Interventions2214-78292023-04-0132100629Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trialTobias Hagberg0Patrik Manhem1Martin Oscarsson2Fiona Michel3Gerhard Andersson4Per Carlbring5Department of Psychology, Stockholm University, SwedenDepartment of Psychology, Stockholm University, SwedenDepartment of Psychology, Stockholm University, SwedenCentre for Clinical Interventions, AustraliaDepartment of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden; Department of Behavioral Sciences and Learning, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, SwedenDepartment of Psychology, Stockholm University, Sweden; Corresponding author at: Department of Psychology, Stockholm University, SE-106 91 Stockholm, Sweden.Assertiveness training has been an essential component in cognitive-behavioral therapy (CBT), for example, in the treatment of social anxiety and in dialectical behavioral therapy. However, the assertiveness construct has garnered little attention in recent clinical research. The objective of this study was to investigate the efficacy of an eight-week transdiagnostic stand-alone internet-based CBT intervention specifically aimed at increasing levels of assertive behavior. Following inclusion, we randomized N = 210 participants into three groups: therapist-guided self-help, unguided self-help, and a wait-list control condition. After a one-year follow-up, we employed a linear mixed model to estimate the effects at both post-test and follow-up for the primary outcome measures of assertiveness, Adaptive and Aggressive Assertiveness Scales, the Rathus Assertiveness Schedule, and secondary outcome measures of anxiety, depression, and general well-being. We also assessed reliable clinical change. Compared to the wait list at the post-treatment, estimated between-group effect sizes on self-rated adaptive assertiveness were statistically equivalent for the two treatment groups both at the post and at the one-year follow-up time points, ranging from ES = 0.95 to 1.73, with reliable clinical recovery proportions from 19 % to 36 %. The increase in aggressive assertiveness ranged from ES = 0.62 to 0.90 compared to the wait-list condition at post. For social anxiety symptoms, the effects compared to the wait list at post-treatment ranged from ES = 0.67 to 0.93, with a reliable clinical recovery rate from 16 % to 26 %. For self-assessed well-being, the effects compared to the wait list at post ranged from ES = 0.70 to 1.05. No effects were observed for generalized anxiety, although within-group evidence was found for a medium effect on depression one year after treatment. Overall, the two treatment conditions produced similar effects. In general, participation increased healthy assertive expressions regardless of treatment condition, all the while reducing self-assessed social anxiety and, over time, possibly also depression. Participation also improved general well-being. The findings demonstrate that the assertiveness construct can be a suitable target for intervention, with reductions of both psychiatric symptoms and non-syndromal problems in daily life. The study was preregistered at ClinicalTrials.gov (NCT04240249).http://www.sciencedirect.com/science/article/pii/S2214782923000295AssertivenessAssertive behaviorAnxietyDepressionStressAvoidance
spellingShingle Tobias Hagberg
Patrik Manhem
Martin Oscarsson
Fiona Michel
Gerhard Andersson
Per Carlbring
Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trial
Internet Interventions
Assertiveness
Assertive behavior
Anxiety
Depression
Stress
Avoidance
title Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trial
title_full Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trial
title_fullStr Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trial
title_full_unstemmed Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trial
title_short Efficacy of transdiagnostic cognitive-behavioral therapy for assertiveness: A randomized controlled trial
title_sort efficacy of transdiagnostic cognitive behavioral therapy for assertiveness a randomized controlled trial
topic Assertiveness
Assertive behavior
Anxiety
Depression
Stress
Avoidance
url http://www.sciencedirect.com/science/article/pii/S2214782923000295
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