The relation of quickness of learning to retentiveness,

Published also as thesis (PH. D.) Columbia University, 1917.

The psychology of mentally deficient children,

Columbia University contributions to philosophy and psychology, vol. XV, no. 2.

The intellectual status of children who are public charges,

Columbia university contributions to philosophy and psychology, vol. xxiv, no. 2.

The morphologic aspect of intelligence

"Columbia University, Contributions to Philosophy and Psychology, vol. XXVII, no. 2."

Reise in Ostafrika in den Jahren 1903-1905, mit Mitteln der Hermann und Elise geb. Heckmann Wentzel-Stiftung ausgeführt. Wissenschaftliche Ergebnisse.

Contributions in German, English, French or Italian.

The extension service in Vermont,

1. Farmers and the extension service.--2. Farm women and the extension service.

The Psychological review.

Issues for 1894-1903 include the section: Psychological literature.

Ideals of America; analyses of the guiding motives of contemporary American life by leaders in various fields of thought and action.

Can America's ideal be consciously shaped? by G. E. Hooker.--Ideals in politics, by F. D. Bramhall.--Ideals in law, by J. B. Winslow.--Ideals in labor, by J. P. Frey.--Ideals of science, by J. M. Coulter.--Ideals in education, by E. C. Moore.--Ideals in business, by A. E. Swanson.--Ideals in "society," by Elsie C. Parsons.--Ideals in music, by E. Dickinson.--Ideals in religion, by G. A. Coe.--Ideals in philosophy, by H. A. Overstreet.--Ideals in literature, by R. M. Lovett.--Human progress, by A. B. Pond.

Philosophy and psychology pamphlets

A collection of miscellaneous pamphlets.

The relative merit of advertisements, a psychological and statistical study.

Columbia contributions to philosophy and psychology, vol. XIX, no. 3

The Journal of philosophy.

Covers topics in philosophy, psychology, and scientific methods. Vols. 31- include "A Bibliography of philosophy," 1933-

The effects of practice on judgments of absolute pitch,

Published also as thesis (PH. D.) Columbia University, 1922.

Psychological examinations of college students,

Columbia University contributions to philosophy and psychology. vol. XXVII, no. 3.

Adenoids and diseased tonsils; their effect on general intelligence,

Published also as thesis (PH. D.) Columbia University, 1921.

An experimental study of silent thinking,

"Columbia university contributions to philosophy and psychology."