Barnow, Burt S. - In: Zeitschrift für ArbeitsmarktForschung - Journal for … 43 (2010) 2, pp. 91-105
"It is widely agreed that randomized controlled trials - social experiments - are the gold standard for evaluating social programs. There are, however, many important issues that cannot be tested using social experiments, and often things go wrong when conducting social experiments. This paper...