habituationHabituation is a mental learning process in infants wherein repeated exposure to a stimulus results in a decreased response to it. In this example, after Melanie presented the infants with the same red light repeatedly, they became "habituated" or familiar with it, after which they lost interest in observing it. Melanie then proceeds to investigate if the infants instead turn their attention to a different colored light (a new stimulus).
The peripheral route to persuasion occurs when the listener decides whether to agree with the message based on other cues besides the strength of the arguments or ideas in the message. For example, a listener may decide to agree with a message because the source appears to be an expert, or is attractive.
