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Direct linkAlexander, James R.M.; Martin, Frances – Journal of School Psychology, 2004
During the school years, psychological test norms may be indexed by age or by grade. A number of studies have shown that using age-based norms appears to produce biases associated with grade assignment. Cahan and Cohen [Child Dev. 60 (1989) 1239-1249] showed that the effect of one grade was over twice the effect of 1 year of age for most verbal…
Descriptors: Test Norms, Cognitive Ability, Verbal Ability, Reading Tests
