In a historical account of the development of cognitive anthropology, Roy D'Andrade examines how cultural knowledge is organized within and between human minds. He begins by examining research carried out in the 1950s and 1960s concerned with how different cultures classify kinship relationships and the natural environment, and then traces the development of more complex cognitive theories of classification in anthropology that took place in the 1970s and 1980s. Finally, current work involving cultural models, emotion, motivation, and action is considered, along with a cognitive perspective on the nature of culture.