Category width and quantitative aptitude
By: Samuel Messick and Nathan Kogan
Contributors: Kogan, Nathan; National Institute of Mental Health
Series: Research bulletin / Educational Testing Service -- 64-20; Research bulletin (Educational Testing Service) -- RB-64-20
Publisher: Educational Testing Service
Published: 1964
Place of publication: Princeton, New Jersey
Language: eng
Subjects: Educational tests and measurements
Notes: "April 1964."

"National Institute of Mental Health, United States Public Health Services. Research Grant M-4186 to Educational Testing Service".

Includes bibliographical references (leaf 6).