Structural Equation Models with Directly Observed Variables II James G. Anderson, Ph.D. Purdue University.

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Presentation transcript:

Structural Equation Models with Directly Observed Variables II James G. Anderson, Ph.D. Purdue University

Identification Over Identified Just Identified Under Identified

Covariances Among observed variables Among exogenous variables Among measurement errors Among errors in the equations

Covariances among Observed Variables rowtypevarnameperformknowlvaluesattrain n98 covperform0.022 covknowl covvalue covsat train covtrain mean

Covariances among Exogenous Variables

Covariances among Measurement Errors

Covariances among the Errors in the Equations

Class Exercise Create a new model: – From the menu choose File/New Specify the Data file: – Choose File/Data Files –Browse to the tutorial folder. The path is: C:\Program Files\Amos 6\Examples In the Files of type list select SPSS Select Fels_mal.sav Estimate the Parameters of the different models and compare their fit statistics