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spec: Also , the speed and the iterative nature of the interaction between these elements is likely to be such that it is difficult to demonstrate empirically the direction of the information flow . You may be taking more of that medication , the first-prescribed medication plus another medication , or a different medication entirely . WCPR allows for within-cluster dependency not solely due to baseline heterogeneity . Psychotropic medication : Medication , the prescribed intent of which is to affect or alter thought processes , mood or behavior , including , but not limited to antipsychotic , antidepressant and anxiolytic medication and behavior medications .