What do meta-analysts need in primary studies? Guidelines and the SEMI checklist for facilitating cumulative knowledge.

Meta-analysis is often recognized as the highest level of evidence due to its notable advantages. Therefore, ensuring the precision of its findings is of utmost importance. Insufficient reporting in primary studies poses challenges for meta-analysts, hindering study identification, effect size estimation, and meta-regression analyses. This manuscript provides concise guidelines for the comprehensive reporting of qualitative and quantitative aspects in primary studies. Adhering to these guidelines may help researchers enhance the quality of their studies and increase their eligibility for inclusion in future research syntheses, thereby enhancing research synthesis quality. Recommendations include incorporating relevant terms in titles and abstracts to facilitate study retrieval and reporting sufficient data for effect size calculation. Additionally, a new checklist is introduced to help applied researchers thoroughly report various aspects of their studies.

Gender differences and variability in creative ability: A systematic review and meta-analysis of the greater male variability hypothesis in creativity.

Society is largely shaped by creativity, making it critical to understand why, despite minimal mean gender differences in creative ability, substantial differences exist in the creative achievement of men and women. Although the greater male variability hypothesis (GMVH) in creativity has been proposed to explain women's underrepresentation as eminent creators, studies examining the GMVH are sparse and limited. This systematic review and meta-analysis were conducted to examine whether the GMVH in creativity can adequately explain the gender gap in creative achievement. We examined the GMVH in creativity, along with mean gender differences, in a range of indicators of creativity and across different sample characteristics and measurement approaches. Effect sizes (k = 1,003) were calculated using information retrieved from 194 studies (N = 68,525). Data were analyzed using three-level meta-analysis and metaregression and publication bias was evaluated using Egger's regression test and contour-enhanced funnel plots. Results revealed minimal gender differences overall, with a slight mean advantage for females (g = -0.10, 95% CI [-0.13, -0.06]) and a trivial variability advantage for males (lnVR = 0.02, 95% CI [0.004, 0.04]) in creative ability scores. However, the magnitude of the effect sizes was moderated by creative domain, task type, scoring type, and study region for mean differences and by country-level gender egalitarianism values for variability. Taken together, gender differences in the mean and variability of creative ability scores are minimal and inconsistent across different contexts, suggesting that the GMVH may not provide much explanatory power for the gender gap in creative achievement. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

School-based Psychosocial Interventions' Effectiveness in Strengthening Refugee and Migrant Adolescents' Mental Health, Resilience, and Social Relations: A Four-country Cluster Randomized Study.

School-based psychosocial interventions are increasingly put forward as a way to support young refugees' and migrants' well-being and mental health in resettlement. However, the evidence on these interventions' effectiveness remains scarce and scholars denounce particular gaps in the evidence to date, pointing to a lack of large-scale, controlled studies and studies including social outcome measures. This cluster randomized study aims to strengthen the evidence base on school-based psychosocial interventions for refugee and migrant youth by assessing the effect of two interventions, Classroom Drama and Welcome to School, on youth's mental health, resilience, and social relations in Belgium, Denmark, Norway, and the United Kingdom. Multilevel analyses were conducted separately for the two interventions (Classroom Drama, n = 307, ages 11-19; Welcome to School, n = 251, ages 11-23), using separate no-treatment control groups. Our analyses indicated a significant main, positive effect of Classroom Drama on perceived family support, and an effect on perceived support from friends that was moderated by country: in the United Kingdom, the intervention group reported an increase in perceived friend support, whereas the control group reported a decrease. Furthermore, baseline resilience moderated the effect of the Classroom Drama intervention on behavioral difficulties and well-being. No effects of Welcome to School on any of the outcome variables were found. Overall, this study provides novel, nuanced evidence on school-based psychosocial interventions for refugee and migrant adolescents.

Cada vez se proponen más las intervenciones psicosociales centradas en la escuela como ayuda al bienestar de jóvenes refugiados y migrantes en su realojamiento. No obstante hay pocas pruebas sobre la eficacia de tales intervenciones y los expertos denuncian fallas en dichas pruebas hasta el momento debido a la falta de estudios controlados a gran escala que incluyan medidas de los resultados sociales. El presente estudio de grupos aleatorizados pretende potenciar la base de pruebas sobre intervenciones psicosociales centradas en la escuela con jóvenes refugiados y migrantes analizando el efecto de dos intervenciones, "El drama en el aula" y "Bienvenido al colegio", en la salud mental, la resiliencia y las relaciones sociales de los jóvenes en Bélgica, Dinamarca, Noruega y el Reino Unido. Se efectuaron análisis multinivel por separado para las dos intervenciones ("El drama en el aula", n = 307, edad entre 11 y 19 años; "Bienvenido al colegio", n = 251, edad entre 11 y 23 años) con grupos de control sin tratamiento separados. Los análisis mostraron un efecto positivo principal significativo de "El drama en el aula" en el apoyo familiar percibido y un efecto en el apoyo percibido de los amigos moderado por el país: en el Reino Unido el grupo de intervención presentó un aumento del apoyo percibido de los amigos, mientras que en el grupo control disminuyó. Además la resiliencia básica moderaba el efecto de la intervención de "El drama en el aula" en las dificultades conductuales y en el bienestar. No se apreció efecto de "Bienvenido al colegio" en ninguna de las variables resultado. En términos generales el estudio supone un inédito y detallado aval de las intervenciones psicosociales centradas en la escuela en el caso de adolescentes refugiados y migrantes.

School-based Psychosocial Interventions’ Effectiveness in Strengthening Refugee and Migrant Adolescents’ Mental Health, Resilience, and Social Relations: A Four-country Cluster Randomized Study / [La eficacia de las intervenciones psicosociales centradas en la escuela para potenciar la salud mental, la resiliencia y las relaciones sociales de adolescentes refugiados y migrantes: un estudio de grupos aleatorizados en cuatro países]

School-based psychosocial interventions are increasingly put forward as a way to support young refugees’ and migrants’ well-being and mental health in resettlement. However, the evidence on these interventions’ effectiveness remains scarce and scholars denounce particular gaps in the evidence to date, pointing to a lack of large-scale, controlled studies and studies including social outcome measures. This cluster randomized study aims to strengthen the evidence base on school-based psychosocial interventions for refugee and migrant youth by assessing the effect of two interventions, Classroom Drama and Welcome to School, on youth’s mental health, resilience, and social relations in Belgium, Denmark, Norway, and the United Kingdom. Multilevel analyses were conducted separately for the two interventions (Classroom Drama, n = 307, ages 11-19; Welcome to School, n = 251, ages 11-23), using separate no-treatment control groups. Our analyses indicated a significant main, positive effect of Classroom Drama on perceived family support, and an effect on perceived support from friends that was moderated by country: in the United Kingdom, the intervention group reported an increase in perceived friend support, whereas the control group reported a decrease. Furthermore, baseline resilience moderated the effect of the Classroom Drama intervention on behavioral difficulties and well-being. No effects of Welcome to School on any of the outcome variables were found. Overall, this study provides novel, nuanced evidence on school-based psychosocial interventions for refugee and migrant adolescents.(AU)

Cada vez se proponen más las intervenciones psicosociales centradas en la escuela como ayuda al bienestar de jóvenes refugiados y migrantes en su realojamiento. No obstante hay pocas pruebas sobre la eficacia de tales intervenciones y los expertos denuncian fallas en dichas pruebas hasta el momento debido a la falta de estudios controlados a gran escala que incluyan medidas de los resultados sociales. El presente estudio de grupos aleatorizados pretende potenciar la base de pruebas sobre intervenciones psicosociales centradas en la escuela con jóvenes refugiados y migrantes analizando el efecto de dos intervenciones, “El drama en el aula” y “Bienvenido al colegio”, en la salud mental, la resiliencia y las relaciones sociales de los jóvenes en Bélgica, Dinamarca, Noruega y el Reino Unido. Se efectuaron análisis multinivel por separado para las dos intervenciones (“El drama en el aula”, n = 307, edad entre 11 y 19 años; “Bienvenido al colegio”, n = 251, edad entre 11 y 23 años) con grupos de control sin tratamiento separados. Los análisis mostraron un efecto positivo principal significativo de “El drama en el aula” en el apoyo familiar percibido y un efecto en el apoyo percibido de los amigos moderado por el país: en el Reino Unido el grupo de intervención presentó un aumento del apoyo percibido de los amigos, mientras que en el grupo control disminuyó. Además la resiliencia básica moderaba el efecto de la intervención de “El drama en el aula” en las dificultades conductuales y en el bienestar. No se apreció efecto de “Bienvenido al colegio” en ninguna de las variables resultado. En términos generales el estudio supone un inédito y detallado aval de las intervenciones psicosociales centradas en la escuela en el caso de adolescentes refugiados y migrantes.(AU)