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The Tri-Mediation Model of persuasion

In this paper, the effects of positive versus negative (political) advertising are modelled. The findings show that positive as well as two different types of negative advertising will lead viewers to formulate specific attitudes towards the brand (sponsor). However, the manner in which these attitudes are formed will be affected by ad type and argument strength. It was found that under strong message argument conditions, negative attack ads may lead to more positive evaluations of the sponsoring candidate, whereas under weak message argument conditions, direct comparison ads may be superior. In developing this model to include the effects of negative appeals, the traditional Dual Mediation Model of persuasion is redefined. The author demonstrates that a peripheral cue (attitude towards the ad) can have an impact on the central route to persuasion by fostering message acceptance not only in regard to the sponsor of the advertisement but also in regard to a competitor. The resultant Tri-Mediation Model of persuasion provides significant insights into the nature of cognitive processing resulting from exposure to negative advertising.