Research on attitude has a long tradition in marketing. It has commonly been assumed that attitudes are relatively stable over time. Contrary to this hypothesis, this paper shows that merely confronting consumers with some cognitive criteria concerning brand evaluation can in fact change their rating in the short term. A second finding is that evaluations of sportswear brands become consistently more negative when subjected to the cognitive evaluation process. A third result shows that purchasing behaviour can be explained to a greater extent by emotions than by cognitive components of attitude.