The marketing approach is an attitude of research, analysis, listening to the market and its supposed environmental permit. Understanding consumer behavior involves a double research effort (via qualitative studies or quantitative studies). The intrinsic dimension is what is unique, which is unique to each person as a way to represent and practice the act of consumption.
The extrinsic dimension consists of the external elements that surround and can influence their choices and decisions. For the marketer, the decision making process of the consumer spans stages and involves many parameters.
Market research are used to gather information to better understand the coveted target and environment (legal, political, social, regulatory, economic, cultural ...) of the target. This will adapt methods of operational and strategic marketing accordingly.