Specification - Steps of SEM - Basic Steps

4 important questions on Specification - Steps of SEM - Basic Steps

What are the six basic steps of SEM?

1. Specify the model
2. Evaluate model identification
3. Select the measures and collect, prepare and screen the data
4. Estimate the model
4a. Evaluate model fit
4b. Interpret parameter estimates
4c. Consider equivalent or near-equivalent models (go to step 6)
5. Respecify the model (go back to step 4)
6. Report the results

Why are the basic steps of SEM iterative?

Because when problems occur at later steps, you might have to return to earlier steps in the process.

When is a model identified?

A model is identified when it is theoretically possible for the computer to derive a unique estimate of every model parameter.
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What should be done when the model is not identified?

Than the model need to be respecified (return to step 1)

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