Difficulty prediction of test items.
Series: Columbia University. Teachers College. Contributions to education,; no. 941; Contributions to education ;; no. 941.
Publisher: Bureau of Publications, Teachers College. Columbia Univ.
Published: 1948
Place of publication: New York
Language: eng
Number of pages: 55
Subjects: Mental tests
Notes: Bibliography: p. 54-55.
Issued also as thesis, Columbia Univ.