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Direct linkHarring, Jeffrey R. – Journal of Educational and Behavioral Statistics, 2009
The nonlinear mixed effects model for continuous repeated measures data has become an increasingly popular and versatile tool for investigating nonlinear longitudinal change in observed variables. In practice, for each individual subject, multiple measurements are obtained on a single response variable over time or condition. This structure can be…
Descriptors: Regression (Statistics), Computation, Measurement, Models
Peer reviewedHumphreys, Lloyd G.: And Others – Applied Psychological Measurement, 1979
A simplex process model of the cross-lagged correlation paradigm was applied to 16 tests administered to samples of Black and White males and females in grades 5, 7, 9, and 11. Relationships among the measures as well as the use of the model are discussed. (Author/JKS)
Descriptors: Academic Achievement, Achievement Tests, Data Analysis, Elementary Secondary Education
