Overall, advertisers use post-testing to plan future advertising campaigns, so the approaches that provide the most detailed information on the accomplishments of the campaign are most valued. The type of post-testing of the campaign that have achieved the greatest use among major advertisers, we will do continuous tracking, in which changes in advertising spending are correlated with changes in brand awareness, and longitudinal studies, we will conduct research with the same group of respondents were tracked over time. With the longitudinal approach, it is possible to go beyond brand awareness, and to isolate the campaign’s impact on specific behavioral and perceptual dimensions, and to isolate campaign impact by media in different ways.