Eric does not really know how to answer the essay question about cognitive dissonance on his social psychology exam. he decides to write as many facts as he knows about the topic of attitudes in his exam book, hoping that the professor will not read the exams too closely and will be impressed enough by the length of his essay to give him a good score. eric is hoping to take advantage of the central route to persuasion. the peripheral route to persuasion. the sleeper effect. dissonance-related insufficient justification.