An important set of factors that should not be overlooked in attempting to understand and respond to consumers is demographics. Such variables as age, sex, income, education, marital status, and mobility can all have significant influence on consumer behavior. One study showed that age and education have strong relationships to store selection by female shoppers. This was particularly true for women's suits or dresses, linens and bedding, cosmetics, and women's sportswear.
DeBeers Limited, which has an 80 per cent share of the market for diamonds used in engagement rings, employed a consumer demographic profile in developing their promotional program. Their target market consists of single women and men between the ages of 18 and 24. They combined this profile with some lifestyle aspects to develop their promotional program.
People in different income brackets also tend to buy different types of products and different qualities. Thus various income groups often shop in very different ways. This means that income can be an important variable in defining the target group. Many designer clothing shops, for example, aim at higher-income shoppers, while a store like Kmart appeals to middle- and lower-income groups.