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Individual optimization of risky decisions in duration and distance estimations
Attention, Perception, & Psychophysics ( IF 1.7 ) Pub Date : 2020-12-29 , DOI: 10.3758/s13414-020-02225-6
Robbert van der Mijn 1, 2 , Atser Damsma 1, 2 , Niels Taatgen 2, 3 , Hedderik van Rijn 1, 2
Affiliation  

Many everyday decisions require an accurate perception of how much time has passed since a previous event. Although humans estimate time intervals with a high degree of mean accuracy, the precision of estimations varies greatly between individuals. In situations in which accurate timing is rewarded but responding too early is punished, the optimal amount of risk is directly dependent on the precision of the timer. Previously, it was found that humans and rodents displayed near-optimal adjustment of their mean response time based on their individual precision and the level of punishment. It is as of yet unknown whether these strategies of optimality in interval timing are specific to the timing domain, or instead reflect an ability that generalizes to other sensorimotor modalities of decision making. Here, we address this by combining a temporal reproduction experiment and a distance estimation experiment with an identical reward scheme. We found that participants approached optimality in both tasks, but generally underadjusted their responses in the face of high risk. As this individual adjustment was consistent over modalities, these results can best be explained by assuming that the adjustment of behavior towards optimal performance is driven by a modality independent mechanism.



中文翻译:

持续时间和距离估计中风险决策的个别优化

许多日常决策都需要准确了解自上一事件以来已经过去了多长时间。尽管人类估计时间间隔的平均准确度很高,但估计的精度因人而异。在准确计时得到奖励但响应过早受到惩罚的情况下,最佳风险量直接取决于计时器的精度。以前,人们发现人类和啮齿动物根据他们的个人精确度和惩罚水平对他们的平均响应时间进行了近乎最佳的调整。目前尚不清楚这些间隔时间优化策​​略是特定于时间域,还是反映了一种推广到其他感觉运动决策方式的能力。这里,我们通过将时间再现实验和距离估计实验与相同的奖励方案相结合来解决这个问题。我们发现参与者在这两项任务中都接近最优,但在面对高风险时,他们的反应普遍不足。由于这种个体调整在模态上是一致的,这些结果可以通过假设行为向最佳性能的调整是由模态独立机制驱动的来最好地解释。

更新日期:2020-12-30
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