Manual of Emotional Regulation and Interpersonal Abilities in Children and Adolescents Group Therapy

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Purpose: Domestic violence (DV) is a mental health problem that affects children and adolescents. Widespread evidence suggests that witnessing DV has physical and mental health consequences. 19% of children and adolescents cared for in Children, and Youth Mental Health Centers in Catalonia declare having witnessed DV between their parents. However, there are low specialized therapeutic tools to intervene effectively. In this line, the research team of the current project adapted and manualized a group treatment designed to treat children and adolescents between 8 and 16 years old witnesses of DV on an outpatient basis called: 'Manual of Emotional Regulation and Interpersonal Abilities group Therapy - MERITA'. The treatment main aim is to improve the emotional regulation and interpersonal skills of children and adolescents who have witnessed DV. We carried out a pilot study of MERITA (Lacasa et al., 2016) where we obtained promising results. Now, we want to carry out this study to improve methodological limitations by increasing the sample size. We have added a waiting list for assigning patients in different arms (MERITA intervention vs. treatment as usual as control group), as well as we improved the assessment (pre, post, and follow-ups) using several scales with good psychometric properties. Aims: The aim of this trial is twofold: firstly, to assess the effectiveness of Emotional Regulation and Interpersonal Abilities group Therapy (MERITA) in children and adolescents who are witnesses of DV and treated at the Infant and dolescent mental health center (TAU); and secondly, to analyze the differences (MERITA vs only TAU) on traumatic, depressive and anxious symptomatology, emotional dysregulation, interpersonal difficulties, externalizing and internalizing symptoms, somatic complaints, prosocial behavior, attachment, and family functioning. Specifically, MERITA will be compared to TAU alone (post and 3-month follow-up). Methods Design: Trail with two arms: 1. MERITA + TAU (intervention group) 2. TAU (control group) Sample: The necessary sample size to detect statistically significant differences between the groups has been calculated using the G\*Power: with a minimum effect size (0.50), a significance level of 5% and a power of 80%. A minimum of 36 participants would be required.

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