The effect of practice upon individual differences
By: by Ruth Eastwood Perl ...
Published: 1933
Place of publication: New York
Language: eng
Number of pages: 55
Subjects: Ability; Individuality; Psychophysiology
Notes: Bibliography: p. 49-51.
Thesis (PH. D.)--Columbia university, 1934.
Vita.
Published also as Archives of psychology, no. 159.