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Part 1: Studying consumer behaviour understanding consumer and market segments. Part 2: Environmental influences on consumer behavior culture subcultures social class social groups family personal influence and diffusion of innovations. Part 3: Individual determinants of consumer behaviour personality and self-concept motivation and involvement information processing learning and memory attitudes changing attitudes. Part 4: Consumer decision processes problem recognition search and evaluation purchasing processes postpurchase behavior. Part 5: Additional dimensions researching and modelling consumer behaviour consumerism organisational buying behaviour.
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Ness et al. (1980) studied this question.
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