Chapter 1 psychology and law : a cautious alliance. A full appreciation of the possible applications of psychology to the legal system began to emerge in the early years of the twentieth century. 2 events in 1908 that triggered a broad recognition among psychologists that their ideas might be used to transform the legal system. First: on the witness stand: succeeded in getting the attention of the legal community, although it was not the kind of attention he had hoped for. Second: case of muller v. oregon, where women won not having to work beyond 10 hours. This decision was a major victory for the progressive movement. Most important for psychology, brandeis"s brief opened the door for the use of social scientific evidence by u. s. courts. In late 1920s, the legal realism movement reenergized the dormant field of social science and law.