[29]. Stratton, Experimental Psychology and Culture p. 240.

[30]. Attracting the attention is largely a matter of appealing to what is known to interest, for example, to a known ambition.

[31]. M.S. Read, An Introductory Psychology, p. 183.

[32]. F.B. Gilbreth, Motion Study, p. 89.

[33]. Ibid., </>Bricklaying System, para. 555-557.

[34]. F.B. Gilbreth, Bricklaying System, p. 150.

[35]. M.S. Read, An Introductory Psychology, pp. 179-194.

[36]. G.M. Stratton, Experimental Psychology and Culture, p. 42.

[37]. M.S. Read, An Introductory Psychology, p. 208.

[38]. William James, Psychology, Advanced Course, Vol. I, p. 667.