Adolescents let sufficient evidence accumulate before making a decision when large incentives are at stake
Adolescents let sufficient evidence accumulate before making a decision when large incentives are at stake
复制标题
DOI：
10.1111/desc.12092
复制
发表时间：
2014-01-01
影响因子：
3.7
通讯作者：
Casey, B. J.
中科院分区：
文献类型：
--
作者：
Teslovich, Theresa;Mulder, Martijn;Casey, B. J.
在存在激励的情况下，青少年的决策被描述为冲动且次优的。在这项研究中，我们使用知觉辨别任务检查了青少年决策的神经基础，其中小的和大的奖励与正确检测移动点云的运动方向相关。在运动方向与大奖励相关的试验中，成年人表现出反应时间更快的奖励偏差。相比之下，青少年在与大奖励相关的试验中做出决定的速度较慢。青少年的这种行为模式与额顶叶区域的更多招募相平行，这对于代表足以选择一种选择而不是另一种选择的证据积累以及该选择的确定性至关重要。研究结果表明，当大量激励取决于表现时，青少年可能需要在做出反应之前积累更多证据，以确保最大化他们的收益。相比之下，成年人在受到奖励的刺激时，似乎会更快地评估决策的证据。总的来说，这些发现表明，当面临巨大奖励时，青少年可以被激励花更多时间做出决定，而不是仓促做出反应。本文的视频摘要可在 http://youtu.be/1g4F5vzFDl0 观看
Adolescent decision-making has been described as impulsive and suboptimal in the presence of incentives. In this study we examined the neural substrates of adolescent decision-making using a perceptual discrimination task for which small and large rewards were associated with correctly detecting the direction of motion of a cloud of moving dots. Adults showed a reward bias of faster reaction times on trials for which the direction of motion was associated with a large reward. Adolescents, in contrast, were slower to make decisions on trials associated with large rewards. This behavioral pattern in adolescents was paralleled by greater recruitment of fronto-parietal regions important in representing the accumulation of evidence sufficient for selecting one choice over its alternative and the certainty of that choice. The findings suggest that when large incentives are dependent on performance, adolescents may require more evidence to accumulate prior to responding, to be certain to maximize their gains. Adults, in contrast, appear to be quicker in evaluating the evidence for a decision when primed by rewards. Overall these findings suggest that rather than reacting hastily, adolescents can be incentivized to take more time to make decisions when large rewards are at stake. A video abstract of this article can be viewed at http://youtu.be/1g4F5vzFDl0