Question: a. Develop an unconditional LGM to explain the developmental trajectory among these youth in drinking behavior. Start with a model in which the error variances

a. Develop an unconditional LGM to explain the developmental trajectory among these youth in drinking behavior. Start with a model in which the error variances for Adol1 through Adol3 are constrained to be equal. Does the fit improve when you free this constraint in a second model?

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