I am conducting longitudinal multilevel models (Level-1 = Daily observations; Level-2 = PARTICIPANT). Predictors and outcome variables are measured every day.

Do I need to pre-whiten my data (and why)?

  • $\begingroup$ What is the research question you are trying to answer with your model? Also, can you provide more details about the initial specification of your model? $\endgroup$ – Isabella Ghement Apr 2 '19 at 15:00
  • $\begingroup$ Research questions: Do daily changes in motivation for physical activity lead to changes in daily steps? $\endgroup$ – George Apr 2 '19 at 15:44
  • $\begingroup$ i.e. Do individuals take more steps on the days they report high motivation to be active $\endgroup$ – George Apr 2 '19 at 15:47

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