Skip to main content
. 2020 Jan 14;13:291. doi: 10.3389/fnbeh.2019.00291

Figure 1.

Figure 1

Adolescents perform less sign tracking and more goal tracking than adults. (A,B) Average Pavlovian conditioned approach (PCA) index among sign trackers (light gray) and goal trackers (dark gray) over 7 days of training for adolescents (A) and adults (B). Higher PCA index indicates more sign tracking relative to goal tracking. (C,D) Average PCA index for adolescents (C) and adults (D) over the last 3 days of the 7-day training period. Individuals categorized as sign trackers (ST) and goal trackers (GT) are indicated in light gray and dark gray, respectively. (E) Average raw counts of lever deflections and magazine entries during the cue over the last 3 days of training for adolescents (gray) and adults (black). Error bars, SEM. Asterisk, p < 0.05.