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  • Using global evidence for local policy: the third wave of the evidence revolution

    A new blog article by Howard White, CEO, asks why policy makers don't base more decisions on evidence. "Suppose you, or you child, were recommended to undergo an operation. Would your response be to say, “sure, go head and stick the knife in and see what happens.” Unlikely. More likely you would seek reassurance that the operation has been done before, what the success rate is, and if there have been adverse side effects. If the operation were for your child, you would ask specifically if there was any data showing the operation to be safe for children."
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  • Mapping the evidence for child welfare in low- and middle-income countries

    Consultation with preliminary findings: In Bloomsbury, London, the Campbell Collaboration and UNICEF are hosting a free event about evidence mapping on Friday 10 November. Speakers from the International Rescue Committee (IRC) and UNICEF will tell about how their organizations use evidence and evidence maps for work and to develop strategy. Howard White will present a new child welfare megamap.
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  • Three-part webcast series 

    Equity and methods in Campbell systematic reviews
    The Center on KTDRR at American Institutes for Research (AIR) has produced a series where participants will learn how to incorporate people with disabilities into systematic review planning as well as Campbell’s standards, methods, and guidelines for conducting systematic reviews.These webcasts are intended to provide a brief (7-10 minute) introduction into the topics of the presentation.
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  • Introduction to evidence synthesis, systematic reviews and meta-analysis

    Free workshop 12-13 October 2017, Newcastle University
    This workshop presents the principles, methods, analysis, and reporting standards that guide the process of conducting systematic reviews, evidence and gap maps and meta-analysis in social sciences. Participants will also work in groups to produce titles for registration with the Campbell Collaboration.
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Home Page Latest Campbell Evidence

Latest Campbell Evidence

  • Face-to-face Restorative Justice Conferences (RJCs) are cost-effective in reducing reoffending and increasing victim satisfaction. Compared with standard criminal justice,usually through the courts, face-to-face RJCs reduce the frequency of subsequent crimes among offenders.

  • Effective multi-component classroom management programmes seem to improve student behaviour in the classroom but further research is needed. Effective classroom management is a preventive approach which establishes a positive classroom environment in which the teacher focuses on appropriate student behaviour.

  • Drug Courts monitor drug-involved offenders’ abstinence from drug use through frequent drug testing and compliance with drug treatment programs. These courts are effective in reducing future offending and drug use (recidivism) for adults, but not for juveniles.

  • Teen pregnancy prevention programs are mostly ineffective. Multi-component programs may work. Teen pregnancy prevention programs aim to reduce teenage pregnancy by promoting abstinence and using contraception.

Home Page Featured Review

 

Featured Review

‘Effects of Payment for Environmental Services (PES) on Deforestation and Poverty in Low and Middle Income Countries: A Systematic Review' by Cyrus Samii, Matthew Lisiecki, Parashar Kulkarni, Laura Paler, and Larry Chavis.

In honor of World Environment Day on June 5th we are featuring our review studying the effects of programmes for reducing deforestation. Forests store carbon, which helps mitigate the effect of carbon emissions. However, the amount of forest cover is declining at a rate of over seven million hectares a year. Payment for environmental services (PES) are voluntary contracts to supply an environmental service in exchange for payment. In this review, the service is the maintenance or rehabilitation of natural forests.

The review examines how these programmes affect deforestation, factors affecting programme effectiveness, and whether PES should also aim to reduce poverty. The authors conclude that payment for environmental services programmes have only modest effects on deforestation and are not cost-effective. PES programmes are more likely to attract wealthier farmers, and are less effective in poor areas. 

 

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