Programmes to reduce the involvement of children and young people in crime and violence are an important area of social policy in the United Kingdom (UK) and worldwide. This Effect Size Database (ESDB) is a free online repository that reports effect sizes (ES) associated with each study included in the Youth Endowment Fund (YEF) Evidence and Gap map (EGM). It enables users to determine the direction and magnitude of impact reported in a particular study for a specific outcome, intervention, population group and context, reported as the standardised mean difference. The ESDB will be made freely available by the YEF.
