[39]. M.S. Read, An Introductory Psychology, pp. 212-213. William James, Psychology, Briefer Course, p. 302.

[40]. M.W. Calkins, A First Book in Psychology, p. 25.

[41]. James Sully, The Teacher's Handbook of Psychology, p. 290.

[42]. William James, Psychology, Briefer Course, p. 150.

[43]. W.D. Scott, Influencing Men in Business, chap. II.

[44]. Ibid., chap. III.

[45]. W.D. Scott, The Theory of Advertising, p. 71.

[46]. W.D. Scott, Increasing Human Efficiency in Business, p. 41.

[47]. G.M. Stratton, Experimental Psychology and Culture, p. 200.

[48]. F.W. Taylor, The Principles of Scientific Management, p. 36.