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Thank you very much for your help Chris! I think I understand now

Best wishes,

Yuri

Thank you kindly Chris for your response!

What exactly do you mean with sorted? I sometimes have only 3 measurement occasions for a person and sometimes 5, is that problematic?

So if I understand correctly, I have to do the following:

Multilevel Data Manipulations
-> operation: lags
-> on ...

Greetings! I have a brief question on how to enter lagged variables.

I have a small two-level model where participants (=level2) responded on 3 to 5 measurement occasions (=level1). I'm trying to model:

dependent variable = constant + daily "x" + lagged dependent variable (from the day before ...