“…One study demonstrated that negative political advertising caused an increase in cynicism (Tedesco, 2002), whereas another study demonstrated that negative ads did not affect cynicism . Still other studies have shown that the medium in which the ads are presented can differentially affect cynicism (Kaid & Postelnicu, 2005), as can individuals' political involvement and the message source's credibility (Yoon, Pinkleton, & Ko, 2005). However, none of the aforementioned studies incorporated ad type as an independent variable, so it is difficult to distinguish if NEGATIVE POLITICAL ADS, CYNICISM, AND SELF-EFFICACY any effects or noneffects were attributable to this factor.…”