The producers of instant (立即的)coffee found their product strongly resisted (抵制) in the market places although their product has many advantages. Furthermore, the cost of the advertising of instant coffee was far higher than that of regular coffee. Efforts were made to find the cause of the consumers' seemingly unreasonable resistance to the product. The reason given by most people was dislike for the taste. The producer thought that there might be deeper reasons. This was proved by one of motivation(动机) research's classic studies, one often used in the trade. Mason Haire, of the University of California, constructed two shopping lists that were the same except for one item. There were six items common to both lists: hamburger, carrots, bread, baking powder, canned peaches(桃子) , and potatoes ,with the brands or amounts specified D. The seventh item, in fifth place on both lists, read 'one pound Maxwell House coffee' on the list and' Nescafe' instant coffee' on the other. One list was given to each other in a group of fifty women, and the other list to those in the other group of the same size: The women were asked to study their list and then to describe, as far as they could, the kind of woman ( 'personality and character' ) who would draw up that shopping list. Nearly half of those who had received the list including instant coffee described a housewife who was lazy and a poor planner. On the other hand, only one woman in the other group described the housewife, who had included regular coffee on her list, as lazy only six of that group suggested that she was probably not a good wife. No one in the other group drew such a conclusion a- bout the housewife who intended to buy regular coffee. In the opinion of instant coffee producers, ______.