Published also as thesis (Ph.D.) Columbia university, 1922.
Bibliography: pages 59-60.
With: The mental status of psychoneurotics / Alexander D. Tendler, 1893- New York: 1923. With: Effects of attention on the intensity of cutaneous pressure and on visual brightness / Sidney Merritt Newhall, 1896- New York: 1923. With: The measurement of motor ability / Evelyn Garfiel, 1900- New York: 1923. With: Race differences in inhibition / Albert Loyal Crane, 1893- New York: 1923.