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Wilkins, Greg; Epting, Franz – Psychological Reports, 1971
Descriptors: Cognitive Ability, Cognitive Processes, Difficulty Level, Discrimination Learning
Blasi, E. R.; And Others – Percept Mot Skills, 1970
Descriptors: Design, Difficulty Level, Discrimination Learning, Measurement Instruments
Whitehurst, Grover J. – J Exp Child Psychol, 1969
Based on the author's M.A. dissertation submitted to the University of Illinois, Urbana.
Descriptors: Age, Difficulty Level, Discipline, Discrimination Learning