Analyses were conducted of dominance and territoriality phenomena displayed by45inmates confined to a prison camp bullpen. Ethological techniques and perspectives were employed in assessing each inmate's relative dominance by recording matrix interactional contact (i.e., frequency of contact; duration of contact; and frequency of initiating contact) and frequency of agonistic episodes (i.e., aggressive acts; stares; avert gazes; vocal alarms; grimaces; etc.). Dominance hierarchies derived from the two methods were significantly correlated. Dominant inmates tended to possess more valued objects and spatial territory within the bullpen than inmates of lesser dominance. The feasibility of applying ethological perspectives to a social setting is tested.