Grade Equivalent and IRT Representations of Growth. ACT Research Report Series 97-2 [electronic resource] / E. Matthew Schulz and W. Alan Nicewander.

It has long been a part of psychometric lore that the variance of children's scores on cognitive tests increases with age. This "increasing-variance" phenomenon was first observed on A. Binet's intelligence measures in the early 1900s. An important detail in this matter is the fa...

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Bibliographic Details

Online Access:	Full Text (via ERIC)
Main Author:	Schulz, E. Matthew, 1954-
Corporate Author:	American College Testing Program
Other Authors:	Nicewander, W. Alan
Format:	Electronic eBook
Language:	English
Published:	[S.l.] : Distributed by ERIC Clearinghouse, 1997.
Subjects:	Achievement Gains. Age Differences. Child Development. Children. Cognitive Tests. Grade Equivalent Scores. Item Response Theory. Psychometrics.