Influence of Previous Star Wars Films on Star Wars Fan Attitudes. The <a href=http://stephendann.net/articles/pdf/Prior%20Product%20Preference%20influence%20of%20star%20wars.pdf>full study</a> examined the attitudes of a group of Star Wars fans queuing for the midnight session of Revenge of the Sith. Influences on attitudes to RotS turned out to be preference for Empire Strikes Back and Attack of the Clones. The study also examined the impact of attitudes to the Star Wars franchise and the use of Star Wars characters for endorsing Pepsi.