The movement towards 'evidence based' policy and practice has raised, again, important questions about the extent to which policy can be derived from research and about the kind of evidence which should inform policy.

The movement towards 'evidence based' policy and practice has raised, again, important questions about the extent to which policy can be derived from research and about the kind of evidence which should inform policy.

The movement towards 'evidence based' policy and practice has raised, again, important questions about the extent to which policy can be derived from research and about the kind of evidence which should inform policy.