Developing evidenced-based policy and practice in social interventions with children and families

This review article focuses on a series of reports commissioned by Barnardo's, the largest children's charity in the UK.¹ The series examines ‘what works?’ in different forms of social intervention with children and families. The publication of these reports is very timely. There is growing interest, indeed a demand, from many quarters for a strengthening of the evidence base that informs social policy. This, in turn, has opened a debate among researchers and users of research about what constitutes evidence. What sort of information enables us to make claims that a particular initiative works? This series considers the question of appropriate research methodologies and in so doing raises many further questions, which are the theme of this review.