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Direct linkGrimm, Kevin J.; Mazza, Gina L.; Mazzocco, Michèle M. M. – Educational Psychologist, 2016
Educational research aims to understand how and why students change over time. With its emphasis on within-person change, latent change score models provide educational researchers with a more general and flexible framework for testing nuanced hypotheses regarding within-person change and between-person differences in within-person change. Models…
Descriptors: Educational Research, Longitudinal Studies, Statistical Analysis, Mathematics Skills
Download full textDavison, Mark L.; Chang, Yu-Wen – 1992
A two-dimensional, compensatory item response model and a unidimensional model were fitted to the reading and mathematics items in the Woodcock-Johnson Psycho-Educational Battery-Revised for a sample of 1,000 adults aged 20-39 years. Multidimensional information theory predicts that if the unidimensional abilities can be represented as vectors in…
Descriptors: Achievement Tests, Adults, Equations (Mathematics), Error of Measurement
