Hello, Mr. Koen, Thank you very much for pointing that out to me. The screenshot of the above code is extracted from the specific paper that you have mentioned here. I tried to reach one of the authors via LinkedIn too, however, I haven't heard back. Apparently, there are not many resources on path analysis + longitudinal data that I know of. I am basically stuck in two concepts: 1) How do I define paths if I include all the individual variable at one specific time point in the lineqs statement? OR, 2) How do I define "time" if I transform wide data into long format into the path statement.
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