1. A method comprising: identifying a member of a population cohort; and indicating, using a suitable microprocessor, at least one behavior in the member of the population cohort based on an association between the population cohort and at least one cohort-linked avatar, where the at least one cohort-linked avatar is at least partly based on a mental state associated with at least one physiologic activity measurement, and where at least one of a weight or a priority is assigned to at least one of a reference mental state or at least one reference physiologic activity measurement.