You and your sister are watching your nephew. initially he seems to be very interested in a recently appeared stimulus, but seems not to be very interested in it after a few seconds. your sister thinks that he might not have a very long attention span. what do you tell her? your nephew is actually displaying

The fact that the nephew initially seems to be very interested in a recently appeared stimulus, but seems not to be very interested in it after a few seconds means that he is is actually displaying habituation. The term habituation describes decrease of responses to a stimulus after repeated or prolonged presentations, as the person becomes accustomed to this stimulus. 

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