Better evidence for a better world

Campbell evidence and gap maps

Coming soon – Campbell EGMs are a new evidence synthesis product. Plain language summaries of our EGMs will be published on this website. The interactive EGMs and full EGM reports will be available in our journal on the Wiley Online Library platform: click here.



Learn more about Campbell EGMs

Other EGMs

Campbell has produced maps on other topics, sometimes in partnership with other organisations.



See our other EGMs
Search Result: 38 Records found
Page 1 of 4

K2_THE_LATEST

Small class sizes for improving student achievement in primary and secondary schools
  • Authors Trine Filges, Christoffer Scavenius Sonne-Schmidt, Bjørn Christian Viinholt Nielsen
  • Published date 2018-10-11
  • Coordinating group(s) Education
  • Type of document Title Protocol Review Plain language summary Data
  • PLS Title Small class size has at best a small effect on academic achievement
  • PLS Description Increasing class size is one of the key variables that policy makers can use to control spending on education. But the consensus among many in education research is that smaller classes are effective in improving student achievement which has led to a policy of class size reductions in a number of US states, the UK, and the Netherlands. This policy is disputed by those who argue that the effects of class size reduction are only modest and that there are other more cost-effective strategies for improving educational standards. Despite the important policy and practice implications of the topic, the research literature on the educational effects of class-size differences has not been clear. This review systematically reports findings from relevant studies that measure the effects of class size on academic achievement.
  • Title Small class sizes for improving student achievement in primary and secondary schools
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2018.10
Recovery schools for improving behavioral and academic outcomes among students in recovery from substance use disorders
  • Authors Emily A. Hennessy, Emily E. Tanner-Smith, Andrew J. Finch, Nila Sathe, Shannon Kugley
  • Published date 2018-10-04
  • Coordinating group(s) Education, Social Welfare
  • Type of document Title Protocol Review Plain language summary
  • Category Image Category Image
  • PLS Title There is insufficient evidence to know whether recovery high schools and collegiate recovery communities are effective
  • PLS Description Based on the results of one study, recovery high schools (RHSs) may reduce high school students’ school absenteeism, marijuana use, and other drug use, and increase abstinence from drugs; but RHSs may be no better or worse than other high schools in improving grades, reducing truancy, or reducing alcohol use. It is unclear whether collegiate recovery communities (CRCs) are effective in promoting academic success and reducing substance use among college students.
  • Title Recovery schools for improving behavioral and academic outcomes among students in recovery from substance use disorders
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2018.9
What are the effects of 'Teach For America' on Math, English Language Arts, and Science outcomes of K–12 students in the USA?
  • Authors Herbert Turner, Mackson Ncube, Annette Turner, Robert Boruch, Nneka Ibekwe
  • Published date 2018-06-25
  • Coordinating group(s) Education
  • Type of document Title Protocol Review Plain language summary Other
  • Category Image Category Image
  • PLS Title There are too few well-designed studies to know the effects of Teach for America on Math, English Language Arts, and Science outcomes of K–12 students in the USA
  • PLS Description There are too few well-designed studies to know the effects of Teach for America on Math, English Language Arts, and Science outcomes of K–12 students in the USA Teach for America (TFA) is an alternate route teacher preparation program that aims to address the decades-long shortage of effective teachers in many rural and urban public schools for kindergarten through 12th grade (K–12), that serve the highest proportions of high-poverty students across the USA. This review finds that are very few studies – just four – which reliably measure the effects of TFA on learning outcomes, so that no firm conclusions may be drawn. This systematic review evaluated the impact of TFA prepared teachers (corps members) relative to novice teachers and alumni relative to veteran teachers on K-12 student outcomes in Math, English Language Arts (ELA), and Science.
  • Title What are the effects of 'Teach For America' on Math, English Language Arts, and Science outcomes of K–12 students in the USA?
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2018.7
Deployment of personnel to military operations: impact on mental health and social functioning
  • Authors Martin Bøg, Trine Filges, Anne Marie Klint Jørgensen
  • Published date 2018-06-01
  • Coordinating group(s) Education, Social Welfare
  • Type of document Title Protocol Review Plain language summary Other Data
  • Category Image Category Image
  • PLS Title Deployment to military operations negatively affects the mental health functioning of deployed military personnel
  • PLS Description When military personnel are deployed to military operations abroad they face an increased risk of physical harm, and an increased risk of adverse shocks to their mental health. The primary condition under consideration is deployment to an international military operation. Deployment to a military operation is not a uniform condition; rather, it covers a range of scenarios. Military deployment is defined as performing military service in an operation at a location outside the home country for a limited time period, pursuant to orders. The review included studies that reported outcomes for individuals who had been deployed. This review looked at the effect of deployment on mental health outcomes. The mental health outcomes are: post-traumatic stress disorder (PTSD), major depressive disorder (MDD), common mental disorders (depression, anxiety and somatisation disorders) and substance-related disorders. By identifying the major effects of deployment on mental health and quantifying these effects, the review can inform policy development on deployment and military activity as well as post-deployment support for veterans. In this way the review enables decision-makers to prioritise key areas.
  • Title Deployment of personnel to military operations: impact on mental health and social functioning
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2018.6
School-based interventions for reducing disciplinary school exclusion
  • Authors Sara Valdebenito, Manuel Eisner, David P. Farrington, Maria M. Ttofi, Alex Sutherland
  • Published date 2018-01-09
  • Coordinating group(s) Crime and Justice, Education
  • Type of document Title Protocol Review Plain language summary
  • PLS Title Interventions can reduce school exclusion but the effect is temporary
  • PLS Description School exclusion is associated with undesirable effects on developmental outcomes. It increases the likelihood of poor academic performance, antisocial behavior, and poor employment prospects. This school sanction disproportionally affects males, ethnic minorities, those who come from disadvantaged economic backgrounds, and those with special educational needs. This review assesses the effectiveness of programmes to reduce the prevalence of exclusion
  • Title School-based interventions for reducing disciplinary school exclusion
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2018.1
Later school start times for supporting the education, health and well-being of high school students
  • Authors Robert Marx, Emily E Tanner-Smith, Colleen M Davison, Lee-Anne Ufholz, John Freeman, Ravi Shankar, Lisa Newton, Robert S Brown, Alyssa S Parpia, Ioana Cozma, Shawn Hendrikx
  • Published date 2017-12-19
  • Coordinating group(s) Education
  • Type of document Protocol Review Plain language summary
  • PLS Title Later school start times may produce benefits for students but more evidence is needed
  • PLS Description Later school start times have been implemented around the world as a means of avoiding the potentially negative impacts that early morning schedules can have on adolescent students. Even mild sleep deprivation has been associated with significant health and educational concerns: increased risk for accidents and injuries, impaired learning, aggression, memory loss, poor self-esteem, and changes in metabolism. This review examines the effects of later start times on these outcomes.
  • Title Later school start times for supporting the education, health and well-being of high school students
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2017.15
Preschool predictors of later reading comprehension ability
  • Authors Hanne Næss Hjetland, Ellen Irén Brinchmann, Ronny Scherer, Monica Melby-Lervåg
  • Published date 2017-12-15
  • Coordinating group(s) Education
  • Type of document Title Protocol Review Plain language summary
  • PLS Title Preschool language skills are associated with better reading comprehension at school
  • PLS Description Determining how to provide the best instruction to support children’s reading comprehension requires an understanding of how reading comprehension actually develops. To promote our understanding of this process, this review summarizes evidence from observations of the development of language and reading comprehension from the preschool years into school. The main outcome in this review is reading comprehension skills. Understanding the development of reading comprehension and its precursors can help us develop hypotheses about what effective instruction must comprise to facilitate well-functioning reading comprehension skills. These hypotheses can be tested in randomized controlled trials.
  • Title Preschool predictors of later reading comprehension ability
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2017.14
Interventions to improve the labour market outcomes of youth: a systematic review of training, entrepreneurship promotion, employment services and subsidized employment interventions
  • Authors Jochen Kluve, Susana Puerto, David Robalino, Jose Manuel Romero, Friederike Rother, Jonathan Stöterau, Felix Weidenkaff, Marc Witte
  • Published date 2017-12-04
  • Coordinating group(s) Education, International Development, Social Welfare
  • Type of document Title Protocol Review Plain language summary
  • PLS Title Active labour market programmes for youth increase employment and earnings. Effects vary between programmes and context.
  • PLS Description This systematic review assesses the impact of youth employment interventions on the labour market outcomes of young people. The included interventions are training and skills development, entrepreneurship promotion, employment services and subsidized employment. Outcomes of interest include employment, earnings and business performance outcomes.
  • Title Interventions to improve the labour market outcomes of youth: a systematic review of training, entrepreneurship promotion, employment services and subsidized employment interventions
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2017.12
The 'Tools of the Mind' curriculum for improving self-regulation in early childhood
  • Authors Alex Baron, Maria Evangelou, Lars-Erik Malmberg, G.J. Melendez-Torres
  • Published date 2017-10-16
  • Coordinating group(s) Education
  • Type of document Title Protocol Review Plain language summary
  • PLS Title The Tools of the Mind curriculum improves self-regulation and academic skills in early childhood
  • PLS Description Tools of the Mind (Tools) is an early childhood education curriculum, which involves structured make-believe play scenarios and a series of other curricular activities. Tools aims to promote and improve children’s self-regulation and academic skills by having a dual focus on self-regulation and other social-emotional skills in educational contexts. This review examines the evidence on the effectiveness of tools in promoting children’s self-regulation and academic skills, in order to inform its implementation in schools.
  • Title The 'Tools of the Mind' curriculum for improving self-regulation in early childhood
  • See the full review https://onlinelibrary.wiley.com/doi/10.4073/csr.2017.10
Effects of trauma-informed approaches in schools
  • Authors Brandy R. Maynard, Anne Farina, Nathaniel A. Dell, Michael S. Kelly
  • Published date 2019-07-17
  • Coordinating group(s) Education
  • Type of document Review
  • Title Effects of trauma-informed approaches in schools
  • English

    PLAIN LANGUAGE SUMMARY

    The review in brief

    Despite growing support and increased rate of which trauma‐informed approaches are being promoted and implemented in schools, evidence to support this approach is lacking.

    What is this review about?

    Exposure to different types of trauma have been associated with varying types and complexity of adverse outcomes, including adverse effects on cognitive functioning, attention, memory, academic performance, and school‐related behaviors. Given the growing research on trauma and increased knowledge about the prevalence, consequences and costs associated with trauma, there have been increased efforts at the local, state and federal levels to make systems “trauma‐informed” (Lang, Campbell, & Vanerploeg, 2015). While the intent of creating trauma‐informed approaches in schools is a noble one, relatively little is known about the benefits, costs, and how trauma‐informed approaches are being defined and evaluated (Berliner & Kolko, 2016). Adopting a trauma‐informed approach in a complex system such as a school building or district is a time consuming and potentially costly endeavor and thus it is important to assess the effects of this approach to inform policy and practice.

    This aim of this review was to assess trauma‐informed approaches in schools on trauma symptoms/mental health, academic performance, behavior, and socioemotional functioning. Trauma‐informed approaches include programs, organizations, or systems that realize the impact of trauma, recognize the symptoms of trauma, respond by integrating knowledge about trauma policies and practices, and seeks to reduce retraumatization. At least two of the three key elements of a trauma‐informed approach must have been present: Workforce development, trauma‐focused services, and organizational environment and practices, which differ from trauma‐specific interventions designed to treat or otherwise address the impact/symptoms of trauma and facilitate healing.

    What is the aim of this review?

    This Campbell systematic review sought to examine the effects trauma‐informed schools on trauma symptoms/mental health, academic performance, behavior, and socioemotional functioning. Although we conducted a comprehensive search to find studies testing trauma‐informed approaches in schools, no studies met the inclusion criteria.

    What are the main findings of this review?

    No studies met criteria for this review, indicating that there is a lack of evidence of trauma‐informed approaches in schools.

    What do the findings of this review mean?

    Despite widespread support and growing adoption of trauma‐informed approaches in schools across the globe, we found no studies to provide good evidence to suggest that this approach is effective in achieving the stated goals. Given the degree to which trauma‐informed approaches are being adopted in schools across the US and other countries, it is important that the effects of these programs be assessed.

    How up‐to‐date is this review?

    The review authors searched for studies June through September, 2017.

  • See the full review https://onlinelibrary.wiley.com/doi/10.1002/cl2.1018
Page 1 of 4

Contact us