The ethnographic description of story-telling and narrative transmission of cultural facts is an aspect of Locke & Bogin's (L&B's) article that should be amplified. Innate shared gene patrimony is biased by the kinship structure of particular societies and interacts with the transmission of narratives. Trance experiences are another interesting aspect of verbal and agonistic “performances.”.

The target article presents arguments for a motivational system dedicated exclusively to the detection of, and reaction to, particular threats to fitness, the so-called “Hazard-Precaution System,” which, according to the authors, drives ritualized behavior. We approach the issue of a motivational system from three perspectives – developmental, psychopathological, and ethnological. (Published Online February 8 2007).