Retailers compete against national manufacturers by launching store brands. National manufactures regularly use brand promotions to fight store brands back. The purpose of this article is to find out whether attitudes toward national brand promotions and store brands have similar or different conceptual antecedents. The study presents and tests a model of the effects of shoppers characteristics (price and non-price-related) on attitudes toward store brand and national brand promotions. The results support that constructs relating to price impact both store brand attitude and national brand promotion attitude, but the strength of some of these relationships differ. Other shopper characteristics like brand loyalty and store loyalty, have similar negative and positive effects, respectively. These slight differences suggest that promotions of national brands might be a good tool for fighting back store brands, but manufacturers need to design and target these promotions carefully in order to avoid head-to-head competition. (C) 2009 Elsevier Inc. All rights reserved.