books.google.nl - Despite the time and money spent on market research through focus groups and questionnaires, 60 to 80 percent of all new products and services fail. Why do consumers often say one thing to marketers, yet do something entirely different in the market?Industry innovator Gerald Zaltman argues that the answer...http://books.google.nl/books/about/How_Customers_Think.html?hl=nl&id=FQk3olZrOdUC&q=influence&utm_source=gb-gplus-shareHow Customers Think
