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Direct linkSpencer, Mercedes; Wagner, Richard K.; Schatschneider, Christopher; Quinn, Jamie M.; Lopez, Danielle; Petscher, Yaacov – Learning Disability Quarterly, 2014
The present study seeks to evaluate a hybrid model of identification that incorporates response to instruction and intervention (RTI) as one of the key symptoms of reading disability. The 1-year stability of alternative operational definitions of reading disability was examined in a large-scale sample of students who were followed longitudinally…
Descriptors: Reading Difficulties, Response to Intervention, Models, Longitudinal Studies
Download full textMarsh, Herbert W.; Grayson, David – 1991
The multitrait-multimethod (MTMM) design of D. T. Campbell and D. W. Fiske (1959) is the most widely used paradigm for testing construct validity, but it continues to be plagued by problems associated with definition of terms, operationalizations of their guidelines, and analytic procedures used to test them. Using five diverse MTMM data sets,…
Descriptors: Analysis of Variance, Comparative Analysis, Construct Validity, Definitions
