When a cue is paired with reward in a different location, some animals will approach the site
of reward during the cue, a behavior called goal tracking, while other animals will approach
and interact with the cue itself: a behavior called sign tracking. Sign tracking is thought to
reflect a tendency to transfer incentive salience from the reward to the cue. Adolescence is a
time of heightened sensitivity to rewards, including environmental cues that have been
associated with rewards, which may account for increased impulsivity and vulnerability to …