According to Ronald J. Faber (1997) there is a difference between short-term advertising effects and long-term advertising effectiveness. In contrast to effects, effectiveness accumulates over time and affects feelings, attitudes and behaviors. The short-term effects of an advertising campaign can be assessed in time periods ranging from a few minutes to a year, while measuring long-term effectiveness should cover a period of ten years or longer. Evaluation of effectiveness should involve multiple exposures to adverts and multiple executions within campaigns in a complex environment, which includes other marketing activities and competitive actions.
According to Lewis R. Horner (2002) An important thing to be considered when speaking about advertising effectiveness is the likeability of an advertisement, or the extent to which it is liked by consumers. Advertising likeability is closely related to the kind of media selected for the advertisement. Naturally, not all advertisements are liked by all people. There are various reasons why a consumer may not like an advert some adverts are considered to be noisy and irritating, not informative enough and even deceptive, exaggerated, boring and/or difficult to