Introductory And Intermediate Growth Models - Mplus

LSAY DataThe data come from the Longitudinal Study of American Youth(LSAY). Two cohorts were measured at four time points beginningin 1987. Cohort 1 was measured in Grades 10, 11, and 12. Cohort 2was measured in Grades 7, 8, 9, and 10. Each cohort containsapproximately 60 schools with approximately 60 students perschool. The variables measured include math and scienceachievement items, math and science attitude measures, andbackground information from parents, teachers, and schoolprincipals. There are approximately 60 items per test with partialitem overlap across grades—adaptive tests.Data for the analysis include the younger females. The variablesinclude math achievement and math attitudes from Grades 7, 8, 9,and 10 and mother’s education.173LSAY Sample Means for MathMath Achievement40 50 60 70 807 8 9 10GradeSample Means for Attitude Towards Math10Math Attitude11 12 13 14 157 8 9 10Grade17487