Reward sensitivity and executive functioning "imbalances" across adolescence

What is it about?

This study looked at how two key systems—our sensitivity for rewards and the mental skills necessary for managing our thoughts, emotions, and actions—develop from childhood through young adulthood. The research helps explain why teenagers may take more risks compared to kids or adults. Using data collected from the same people over many years, the researchers found that both reward sensitivity and executive functions grow during adolescence. However, they don’t grow at the same speed. In early adolescence, sensitivity for rewards increases faster than the ability to control behavior, which creates a kind of “imbalance.” This imbalance could explain why early teens are especially prone to risky behavior, like trying alcohol or engaging in unsafe activities. By the time people reach their late teens or early twenties, the self-control system catches up, and the imbalance fades. Most teens, by that time, are likely better able to manage their desires and make more thoughtful decisions. And by the time people are in early adulthood, this imbalance tends to favor the self-control system, which continues to improve while sensitivity to reward remains stable. However, not everyone follows the same pattern—some people stay more reward-focused or have delayed development in self-control, which might put them at greater risk for poor decision-making.

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Photo by Amir Hosseini on Unsplash

Photo by Amir Hosseini on Unsplash

Why is it important?

This research supports the idea that adolescence is a unique window of vulnerability, and it highlights how understanding these developmental changes over time could help tailor prevention efforts for risky behaviors during this critical life stage.