Child Evidence

Adolescents weigh risks and rewards differently from adults: a reward- · Child Evidence

adolescent risk/reward processing

Adolescents weigh risks and rewards differently from adults: a reward-sensitive socio-emotional system matures earlier than the cognitive-control system, producing heightened reward-seeking, a weaker orientation to the future, and steeper discounting of delayed consequences during adolescence.

For the Court

Researchers broadly agree adolescents are, on average, more reward-driven and less future-oriented than adults, reflecting earlier maturation of reward systems relative to control systems. Debate continues over the precise neural mechanisms and how strongly the pattern holds in real-world decisions.

What This Claim Does NOT Say

Does not claim adolescents cannot assess risk or are incapable of rational choice in calm, deliberate settings.
Does not claim heightened reward-seeking excuses conduct or removes responsibility.
Does not claim a brain scan can establish an individual adolescent's reward sensitivity or predict their behavior.
Does not claim the imbalance applies uniformly; it is context-dependent and strongest under arousal.
Does not claim adolescents value rewards more in every domain or at every age.

Scope — Where It Holds

A population-level account (the "dual systems" / maturational-imbalance model). The reward and future-orientation gap is most pronounced in mid-adolescence and in emotionally arousing or peer-present contexts; future orientation and planning continue maturing into the early twenties. It describes average tendencies with wide individual variation, not any individual's decision.

Sources & Verification

Seminal

Galvan, A., Hare, T. A., Parra, C. E., Penn, J., Voss, H., Glover, G., & Casey, B. J (2006). Earlier development of the accumbens relative to orbitofrontal cortex might underlie risk-taking behavior in adolescents. Journal of Neuroscience, 26(25), 6885-6892.
Neuroimaging · N = 37 · 7-29 years
Adolescents showed exaggerated nucleus accumbens (reward) activity relative to less-mature orbitofrontal (control) activity, consistent with a maturational imbalance favoring reward sensitivity.
Bearing on this claim: fMRI: exaggerated accumbens (reward) activity relative to less-mature orbitofrontal control in adolescents.
doi.org/10.1523/JNEUROSCI.1062-06.2006

Supporting

Precedent Bridge

Relevant to

Roper's account of adolescent impetuosity is grounded in the same risk/reward differences.543 U.S. 551 (2005)

Relied on by

Graham v. Florida (2010): "parts of the brain involved in behavior control continue to mature through late adolescence" — the developmental basis for juveniles' immature risk processing and greater capacity for change.560 U.S. 48 (2010)

Miller v. Alabama (2012): a sentencer must weigh youth's hallmark features, including "failure to appreciate risks and consequences."567 U.S. 460 (2012)

Limits & Counter-considerations

Cross-sectional age comparisons dominate; neuroimaging supports the model at the group level but cannot characterize an individual; the dual-systems model remains debated and refined; samples skew Western; and laboratory reward and discounting tasks may not capture real-world stakes.

Full Dossier

Last reviewed June 18, 2026