Why we need trials

'Fostering Scepticism: The Importance of Warranting Claims' Stephen Gorard

'The Role of Causal Models in Evidence-informed Policy Making and Practice' Stephen Gorard

'Are Randomised Controlled Trials Really the "Gold Standard" in Restorative Justice Research?' Wilcox A, Hoyle C, Young R (2005) in British Journal of Community Justice 3(2): 39-49

Empirical Estimates of the Marginal Advantage of Conducting Randomised Clinical Trials: Results from Experiments and non Experiments on the same topic in Education and Job Training - Professor Thomas Cook

Criminal Designs - Prof Sheila Bird

Randomised controlled trials in social science: a public policy perspective - Dr Philip Davies