Group differences in perceptual efficiency
By: by Richard Ernest Pettifor
Contributors: University of Alberta. Dept. of Educational Psychology
Published: 1964
Language: eng
Number of pages: 116
Subjects: Psychotherapy; Perception; Testing
Notes: In partial fulfillment of the requirements for the degree of Doctor of Philosophy, Department of Educational Psychology.

Also available on microfilm.

Thesis (Ph.D.)--University of Alberta, 1964.