Table 1.

Developmental fMRI reward studies.

Study	Main findings	Age range of adolescent group	Comparison group	Task design	Analysis focus	Baseline
Bjork et al. (2004)	Adolescents show hypo-responsive striatalactivity relative to adults	12–17	Adults (ages 21–28)	Reward magnitude	Anticipationof reward	Entire trial
May et al. (2004)	No comparison group	9–16	None	Reward probability	Entire trial	First timepoint of each trial
Ernst et al. (2005)	Adolescents show hyper-responsive striatal activity relative to adults	9–17	Adults (ages 20–40)	Reward magnitude and probability	Feedback (outcome)	Subset of fixation trials
Galván et al. (2006)	Adolescents show hyper-responsive striatal activity relative to child and adults	13–17	Children (ages 7–11) and adults (ages 23–29)	Reward magnitude	Anticipation	Intertrial interval
van Leijenhorst et al. (2009)	Adolescents show hyper-responsive striatal activity relative to children and adults	14–15	Children (ages 10–12) and adults (ages 18–23)	Reward probability	Anticipation and feedback	No baseline
Geier et al. (2009)	Adolescents show hypo-responsive striatal activity to reward cues and hyper-responsive activity in anticipation of reward relative to adults	13–17	Adults (ages 18–30)	Reward probability	Cue, anticipati-on and feedback	Implicit baseline(e.g., non-task activation)