Carson, John Department Ideals and Practices of Rationality, Max Planck Institute for the History of Science, Max Planck Society;
http://psycnet.apa.org/journals/hop/17/3/249.html (Any fulltext)
Carson, J. (2014). Mental testing in the early twentieth century: internationalizing the mental testing story. History of Psychology, 17(3), 249-255.