Operating rooms (ORs) are inhabited by hierarchical, mixed-gender clinical teams that are often prone to conflict. In evolutionary terms, one expects more within- than between-gender rivalries, especially since the OR is a place where all sorts of social interactions occur, not merely technical communications. To document the full range of behavior, the present study used ethological observation techniques, recording live all social behavior by the team. Using an ethogram, 6,348 spontaneous social interactions and nontechnical communications were timestamped during 200 surgical procedures. Cooperation sequences (59.0%) were more frequent than conflict sequences (2.8%), which ranged from constructive differences of opinion to discord and distraction that could jeopardize patient safety. Behavior varied by clinical role and with the gender composition in the OR. Conflict was initiated mostly down the hierarchy between individuals several ranks apart. Cooperation tended to increase with a rising proportion of females in the OR, but the most pronounced effect concerned the interaction between both genders. If the attending surgeon's gender differed from that of the majority of other personnel in the OR, cooperation was significantly more common.
Keywords: conflict; gender; human behavior; medical; operating room.