The second experiment, with four leaders, makes possible a comparison of the authoritarianism and democracy of four different leaders, and the "laissez-faire" method of two different leaders. In two cases it is also possible to compare the same atmosphere, created by two different leaders with the same club. One other type of control seemed very important, the nature of the club activity, and the physical setting...

p. 272. - Patterns of aggressive behavior in experimentally created social climates, 1939