[5] Vocations for Boys. (Issued by the Vocation Bureau of Boston. 1912.) Vocations for Boston Girls. (Issued by the Girls' Trade Education League. 1911.) Bulletins of Vocation Series. (Issued by the Women's Educational and Industrial Union. 1911.) [6] F.W. Taylor: The Principles of Scientific Management. (New York, 1911.) H.L. Gantt: Work, Wages, and Profits. (New York, 1912.) And the books of Emerson, Gilbreth, Goldmark, etc., to be mentioned later. [7] H. Emerson: Efficiency as a Basis for Operation and Wages. (New York, 1912, p. 107.) [8] H. Emerson: The Twelve Principles of Efficiency. (New York, 1912, p. 176.) [9] H Emerson: The Twelve Principles, p. 156. [10] H. Emerson: The Twelve Principles, p. 177. [11] F.W. Taylor: The Principles of Scientific Management, pp. 86-97. [12] The experiments are being conducted and will be published by Mr. J.W. Bridges. [13] Investigation of Telephone Companies: Bureau of Labor. (Washington, Government Printing Office, 1910.) [14] Ries: Beiträge zur Methodik der Intelligenzprüfung. (Zeitschrift für Psychologie, 1910, vol. 56.) [15] For a survey of a large number of such tests and bibliography, compare: G.M. Whipple: Manual of Mental and Physical Tests. (Baltimore, 1911.) [16] F.L. Wells: The Relation of Practice to Individual Differences. (American Journal of Psychology, 1912, vol. 23, pp. 75-88.) [17] M. Bernays: Auslese und Anpassung der Arbeiterschaft der geschlossenen Grossindustrie, dargestellt an den Verhältnissen der Gladbacher Spinnerei und Weberei. (Leipzig, 1910, p. 337.) [18] H.C. McComas: Some Types of Attention. (Psychological Review Monographs, vol. 13, 3, 1911.) [19] Max Weber: Zur Psychophysik der industriellen Arbeit. (Archiv für Sozialwissenschaft und Sozialpolitik, 1908 and 1909, vols. 27 and 28.) [20] Bryan and Harter: Studies in the Telegraphic Language. (Psychological Review, vol. 4.) [21] W.F. Book: The Psychology of Skill. (University of Montana, Publications in Psychology, 1910.) [22] H. Münsterberg: Beiträge zur experimentellen Psychologie. (Book iv, 1892.) [23] A.J. Culler: Interference and Adaptability. (Archives of Psychology, 1912.) [24] The experiments are being conducted and will be published by Mr. L.W. Kline. [25] Adolf Gerson: Die physiologischen Grundlagen der Arbeitsteilung. (Zeitschrift für Sozialwissenschaft, 1907.) [26] Karl Bücher: Arbeit und Rhythmus. (Fourth Edition, Leipzig, 1909, p. 438.) [27] Frank G. Gilbreth: Motion Study. (New York, 1911.) [28] Taylor: The Principles of Scientific Management. (New York, 1911, p. 71.) [29] The experiments are being conducted and will be published by Mr. E.R. Riesen. [30] R. Herbertz: Zur Psychologie des Maschinenschreibens. (Zeitschrift für angewandte Psychologie, 1908, vol. 2, p. 551.) [31] C.L. Vaughan: The Moter Power of Complexity. (Harvard Psychological Studies, vol. 2, 1906, p. 527.)