<Li> The Managerial school emerged during the late 1950s and became arguably the predominant and most influential school of thought in the field </Li> <Li> The Consumer / buyer behavior school, which dominated the academic field in the second half of the twentieth century (apart from the Managerial school), features theories emerging from behavioral science </Li> <Li> The Social exchange school, which focuses on exchange as the fundamental concept of marketing </Li> <P> Yet other commentators identify a broader range of schools . O'Malley and Lichrou, for example, document the schools as: </P>

Which of the following is not one of the functions of marketing research