Perceived use of different types of information sources in the purchase of a major durable good is investigated in two countries (West Germany and the U.S.), two age groups (under 35, 35 and over), and two time periods (1970 and 1976). A logit model is constructed to allow probabilistic conclusions about the relationships among time, country, and age as explanatory variables and information source types as response variables. Product testing is found to increase in importance between time periods in both countries and to have the highest probability of use in combination with peer group as a source. Advertising has twice the probability of perceived use in the U.S. as in West Germany, and probability of use has not changed between years. Age is found not to be significant in perceived importance of sources. © 1981.
Anderson, R. D., & Engledow, J. L. (1981). Perceived importance of selected product information sources in two time periods by United States and West German consumers. Journal of Business Research, 9(4), 339–351. https://doi.org/10.1016/0148-2963(81)90011-4