which of the following statements about the sleeper effect and its impact on persuasion are accurate and which are not?
a. It is the idea that a weak message from a highly credible source will fail to initially cause a shift in attitudes, but there will eventually be a delayed shift in attitudes.
b. It relates to the attractiveness of the source of a persuasive message.
c. It is the idea that a persuasive message from an unreliable source will initially cause attitudes to shift, but that attitudes tend to shift back over time.
d. It occurs in part because people tend to dissociate the source of the message from the message itself over time.