 Zabin and Brebach portray the development of market segmentation.They describe the inception of the term in the 1950s and show that with time, increasingly more information was considered relevant for marketing purposes.Market segmentation evolved from simple demographics in the 1950s to geodemographics and behavioral segmentation in the 1960s (the propensity to purchase) to psychographics data in the 1970s (personality and lifestyle), to customer loyalty and profitability in the 1990s and to economic data in current times.