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This Campbell systematic review examines the effects of input subsidies on agricultural productivity, beneficiary incomes and welfare, consumer welfare and wider economic growth. The review summarizes evidence from 15 ex...

Improved street lighting serves many functions and is used in both public and private settings. The prevention of personal and property crime is one of its objectives in public space, which is the main focus of this syst...

Abstract Background High‐income countries offer social assistance (welfare) programs to help alleviate poverty for people with little or no income. These programs have become increasingly conditional and stringent in r...

This Campbell systematic review examines the effectiveness of e‐learning in improving evidence‐based health care (EBHC) knowledge and practice. Compared to no learning, pure e‐learning improves EBHC knowledge and s...

This Campbell systematic review assesses the effectiveness of home‐based child development interventions in improving children's developmental outcomes. The review summarises findings from seven studies. Two of the stu...

Poor housing is associated with poor health. This suggests that improving housing conditions might lead to improved health for residents. This review searched widely for studies from anywhere in the world which had inves...

Abstract Background Montessori education is the oldest and most widely implemented alternative education in the world, yet its effectiveness has not been clearly established. Objectives The primary objective of this revi...

More than 76 million people worldwide have alcohol problems, and another 15 million have drug problems. Motivational interviewing (MI) is a psychological treatment that aims to help people cut down or stop using drugs an...

This Campbell systematic review examines the effects of recovery schools on student behavioral and academic outcomes, compared to the effects of non‐recovery schools. The review summarizes evidence from one quasi‐exp...

This Campbell systematic review examines the impact of reducing the maximum duration of unemployment benefits on job‐finding rates. Seven studies were included in the review, all of which are from European countries. I...

This Campbell systematic review examines the effectiveness of school‐based interventions to reduce or prevent violence in intimate relationships. The review focused on programmes to change attitudes and beliefs, reduce...

This updated Campbell systematic review examines the effectiveness incarceration‐based drug treatment interventions in reducing postrelease recidivism and drug use. The review summarises findings from 74 studies, 65 of...

This Campbell systematic review assesses the effectiveness of school‐based decision‐making. The review summarises findings from 17 impact studies and nine studies of barriers and enablers. School‐based decision‐m...

Abstract Background Agroforestry, the intentional integration of trees or other woody perennials with crops or livestock in production systems, is being widely promoted as a conservation and development tool to help meet...