“…Pride has a full-body display featuring an erect and expanded posture, with gaze directed at the audience, and bodily relaxation (5,34,45). This display conveys achievement and dominance (5,7,46) and reflects both short-term and long-term successes (37,47); thus, the pride display is attractive to potential mates (48), a cue to choose partners, and intimidating to rivals (5,49), which may have the effect of reducing aggression (20) and stabilizing a dominance hierarchy. The behavioral display of pride, which derives from dominance and deference systems, is zoologically widespread, not only among nonhuman primates (50) but in a wide range of taxa, including invertebrates (51); thus, it is phylogenetically ancient (for similarities and differences between human and nonhuman status, see refs.…”