Posted: July 27th, 2016

What does the sleeper effect suggest about source credibility?

What does the sleeper effect suggest about source credibility?
a. The effectiveness of a message will increase over time.
b. Many people can learn the important parts of a message even when asleep.
c. The effectiveness of positive sources over negative sources can be erased over time.
d. If a receiver is not paying attention, a message cannot be effective.