A study of trait variability
By: [by] T. G. Foran, Gerald A. Lillis [and] Charles E. O'Leary.
Contributors: Lillis, Gerald Albert.; O'Leary, Charles Edward.
Series: The Catholic University of America.  Educational research bulletins,; vol. III, no. 6
Publisher: The Catholic Education Press
Published: 1928
Place of publication: Washington, D.C
Language: eng
Number of pages: 23
Subjects: Ability; Mental tests; Ability -- Testing
Other titles: Trait variability, A study of.
Notes: "Tests employed in present study": p. 17.
Series title in part at head of t.-p.
The studies reported were conducted by G. A. Lillis and C. E. O'Leary. T. G. Foran, who directed the investigations, has combined them in the present report. cf. p. 3.