Visual Assertions: Effects of Photo Manipulation and Dual Processing for Food Advertisements

In our media landscape, consumers view a plethora of messages with visual assertions, created through postproduction photo manipulation, which communicate meaning at-a-glance. These visual assertions are processed initially and directly and greatly influence how consumers think, feel, and behave. Yet the impact of visuals, which likely color all processing, is not incorporated in persuasive message processing models. Using dual processing models from multiple disciplines as a theoretical foundation, this study demonstrates through two experiments that the effects of photo manipulation, as visual assertions, in food advertising increased consumers' perceptions of healthfulness, positive attitudes, and purchase intentions. Dual processing models for persuasive messages should be extended to account for the initial, influential visual processing of implied assertions, often manipulated during postproduction.