Sentence:  Through comparative study of the behavior of the higher primates and humans, Michael Chance (1988) distinguishes between <WSD>agonic</WSD> and hedonic forms of social organization. The <WSD>agonic</WSD>–hedonic distinction has two limitations which have led to its disuse in contemporary primatology. First, Chance and his collaborators have clung to the untenable generalization that monkey society is <WSD>agonic</WSD> and ape society hedonic. This oversimplifies the complexities of the social and emotional lives of both major kinds of primate species. 
Meaning of the word marked with <WSD> tags:  Of a mode of social interaction based on threats, displays of power, or inducements of anxiety.