Background The investigation of mindfulness-based interventions (MBIs) in cognitive-behavioral therapy has greatly increased over the past years. However, most MBI research with youth focuses on structured, manualized group programs, conducted in school settings. Knowledge about the implementation and effects of MBIs in individual psychotherapy with children and adolescents is scarce. To fill this research gap, the “Mindfulness and Relaxation Study – Children and Adolescents” (MARS-CA) is designed. It aims to assess the effects of short session-introducing interventions with mindfulness elements on juvenile patients’ symptomatic outcome and therapeutic alliance in individual child and adolescent psychotherapy. Methods MARS-CA is conducted at a university outpatient training center for cognitive-behavior therapy. Short session-introducing interventions with mindfulness elements will be compared to short session-introducing relaxation interventions and no session-introducing intervention to explore their effects on symptomatic outcome and therapeutic alliance. The session-introducing interventions will take place at the beginning of 24 subsequent therapy sessions. We hypothesize that patients’ symptomatic outcome and therapeutic alliance improve more strongly in the mindfulness condition than in the other two conditions and that the mindfulness condition moderates the relationship between therapeutic alliance and symptomatic outcome. Patients and their trainee therapists will be randomized to one of the three treatment arms. Participants aged between 11 and 19 years and having a primary diagnosis of either a depressive disorder, an anxiety disorder, or a hyperkinetic disorder will be included. Therapeutic alliance will be assessed after every therapy session (therapy session 1 to therapy session 24), symptomatic outcome will be assessed before the start of treatment (pre), after the 3rd, the 10th, and the 17th therapy sessions, at the end of treatment (24th therapy session, post), and at a 6-month follow-up. Additionally, mindfulness and mindfulness-related measures as well as demographic data, adherence, allegiance, and therapeutic techniques will be assessed. It is our aim to assess a sample of 135 patients. We will conduct multilevel modeling to address the nested data structure. Discussion The study can provide information about how add-on MBIs, conducted by trainee therapists, influence therapeutic alliance and symptomatic outcome in individual psychotherapy in children and adolescents. Trial registration ClinicalTrials.gov NCT04034576. Registered on July 17, 2019

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ObjectivesMindfulness may be a helpful tool to enhance psychotherapists' self‐care and intrapersonal skills. To gain deeper knowledge about how to improve mindfulness skills in child and adolescent psychotherapists, we investigated the impact of two mindfulness‐based workshops and a self‐experience interval (individual homework practice of mindfulness exercises) on quantitative and qualitative measures in a nonrandomised study.MethodsThirty‐six trainee psychotherapists took part in the 6‐week workshop‐based mindfulness intervention (experimental group, EG). Twenty‐one trainee psychotherapists served as a comparison group (CG). All participants completed the Kentucky Inventory of Mindfulness Skills (KIMS‐D), the Self‐Compassion Scale (SCS‐D) and the Empathy Scale for Social Workers (ESSW) at pre, post and 6‐month follow‐up. Benefits of the regular use of mindfulness practice of 10 trainee psychotherapists in the EG were analysed using qualitative content analysis at the 6‐month follow‐up.ResultsThe quantitative analyses revealed a significant increase over time on the KIMS‐D subscale “acting with awareness” in both groups and a significant increase over time on the KIMS‐D subscale “accepting without judgment” in the EG in contrast to the CG. The qualitative analyses indicated good acceptance of the mindfulness‐based workshop intervention. Qualitative changes referred to the achievement of knowledge in theory and practice concerning mindfulness and the integration of mindfulness‐based interventions in everyday life.ConclusionThe mindfulness intervention appeared to produce quantitative long‐term changes concerning mindfulness aspects and qualitative changes. Future research should elaborate conditions (i.e., intervention length, intensity and setting) that may influence the manifestation of quantitative and/or qualitative changes in mindfulness‐based workshop interventions in professionals.

Self-compassion, which refers to being kind and understanding toward oneself when suffering or experiencing personal inadequacies, is widely seen as a protective factor against mental health problems in adolescents and adults. To date, most research is conducted on adults using the Self-Compassion Scale (SCS), although adolescence is seen as a challenging period in life. Self-compassion research has only recently started to focus on childhood and adolescence. We aimed to translate the English version of the SCS for adolescents into German, test its psychometric properties, and examine potential gender differences more closely. We used confirmatory factor analysis (CFA) to find the best-fitting model out of a two, three, and six-factorial solution. The sample consisted of 255 adolescents, 10 to 19 years old, from a community sample. The study was designed as an online survey. We found the six-factorial solution to best fit our data. Males were significantly more self-compassionate than females. The Self-Compassion Scale – Children and Adolescents (SCS-CA) and its subscales showed good internal consistency as well as good content, criterion, and construct validity with measures of mindfulness, quality of life, and psychopathology. We discuss implications of these findings for a better understanding of adolescent well-being and mental health, as well as potential benefits of a future application of this measure. Overall, our findings suggest that the developed questionnaire is an economical, valid, and reliable measure to assess self-compassion in German adolescents. Trial registration: From ClinicalTrials.gov, Identifier: NCT04034576 (registered 07/17/19).