PT - JOURNAL ARTICLE AU - Marcel Corstjens AU - Andris Umblijs AU - Chao Wang TI - The Power of Inertia AID - 10.2501/JAR-51-2-356-372 DP - 2011 Jun 01 TA - Journal of Advertising Research PG - 356--372 VI - 51 IP - 2 4099 - http://www.journalofadvertisingresearch.com/content/51/2/356.short 4100 - http://www.journalofadvertisingresearch.com/content/51/2/356.full SO - J Advert Res2011 Jun 01; 51 AB - The authors propose a pragmatic methodology to provide management with directional guidance in their marketing-resource allocation decisions. The authors report on the estimated market-response functions for products from seven different industries. In each industry, the most popular marketing vehicle receives the largest share of the marketing budget. A number of rationales may explain these allocation decisions, to which the authors add the hypothesis of conservative decision making in marketing. According to this hypothesis, the observed allocation pattern signals a significant overspending on some marketing drivers and underinvestment in alternative marketing vehicles. Marketing managers, thereby, forego the profitable growth opportunities potentially available from the reallocation of their marketing budgets.