Aim: This paper aims to investigate the extent to which mindfulness-based interventions serve to reduce anxiety in children and adolescents. A heterogeneous sample was used, including clinical and non-clinical population. Methods: A literature search of controlled intervention studies published up to December 31, 2016, was carried out in PubMed, Lilacs, Cochrane, Embase, PsycInfo, Opengrey and Teseo databases. The effect size was calculated by Cohen's d. The Cochran Q statistic and the I 2 index were used for the study of heterogeneity. An analysis was conducted using the random effects model. Results: 829 articles were identified, of which 18 were finally selected. Of these, only three had statistically significant effect sizes. The overall combined result obtained was .013, but it did not result statistically significant (CI95% [−.102, .128].) The Q statistic was statistically significant (Q [18] = 28.497, P = . 39) and the I 2 index was 40.34%, indicating a moderate heterogeneity.Conclusions: This meta-analysis did not obtain statistically significant results that could provide conclusions. In general, the studies analysed are small, of low power and have a marked heterogeneity, which implies that the findings are provisional and need to be supported by more robust studies.Although it cannot be ruled out that mindfulness-based interventions are not effective in the infant-juvenile population, it is also possible that this effect could not be detected due to the limited number of available studies. Larger investigations are needed, with sufficient statistical power and designs that control the variables potentially moderating, to establish clear conclusions. K E Y W O R D S adolescents, anxiety, children, meta-analysis, mindfulness

Interfamily therapy (IFT) is a specific model for multifamily therapy (MFT) of recent expansion in Latin American and European countries. In IFT a multifamily group becomes a community of learning where professionals and family members establish collaborative relationships and participate in dialogues. This study used a qualitative phenomenological approach to explore the participants’ perspective of 14 members and ex‐members of two IFT groups conducted in Infant‐Juvenile Mental Health Centers in Havana (Cuba). In this study IFT was well accepted and effective, and it was perceived as beneficial due to its positive influence for participants, with benefits on a personal, family and social level. In addition, participants articulated a series of therapeutic elements of IFT that were essential to promote these benefits. In conclusion, IFT seems to be a useful therapeutic model in the treatment of children, adolescents and their families in a Cuban psychiatric setting.

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Bipolar disorder is a highly disruptive and debilitating problem. Mindfulness-based and mindfulness-informed interventions have exponentially emerged as thirdgeneration therapies, applied to a wide spectrum of disorders, including bipolar disorder. However, the reviews and meta-analyses published to date are limited in their conclusions, as they are based on single-group pretest-posttest cohort designs and mostly focused on mindfulness-based interventions. The present review and metaanalysis try to address these limitations, including studies on informed mindfulness, controlled and single-group designs. It used a specific meta-analytical procedure that allows an imputation procedure in those designs lacking a comparison group, by means of separate omnibus tests for the experimental and control group. A total of 13 studies (N = 331) were selected. The results showed an absence of effects on depression (g = 0.21) and mania (g = À0.13), but significant moderate effect on anxiety (g = 0.53). In conclusion, both mindfulness interventions showed robust evidence on anxiety symptoms in pretest-posttest periods compared to control groups. Few studies and lack of evidence of follow-up periods were the main limitations found.

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