The book does much more than amass evidence. It revisits conventional wisdom; setting an agenda to help interested parties perform better by applying lessons learned, remedying weaknesses and renewing efforts to address unanswered questions. The first three chapters set the scene for the systematic review and its findings. The middle section of the book articulates the findings of the review. Finally, the closing chapters consider values and attitudes, theoretical perspectives and offer conclusions.

Arguments, assumptions and evidence in this publication are presented to inform policy making, programme planning, teaching and research.