Circulating levels of testosterone have been positively associated with impulsivity. The present study investigates the effect of testosterone administration on impulsivity in an intertemporal choice task, where participants are given a choice between smaller-sooner rewards and larger-later rewards. Healthy young male participants (n = 111) received a single-dose of 150 mg testosterone gel in a double-blind, placebo-controlled, between-subjects design. At 180 min post-administration, participants performed the decision-making task. Both model-free (i.e., higher indifference point) and model-based (i.e., steeper discounting rate) parameters revealed that testosterone administration increased impulsive choice. This finding supports the hypothesis that exogenous testosterone increases impulsivity among healthy young males in a laboratory task.

中文翻译：

---

在健康男性中，单剂量睾丸激素的使用会增加他们在跨期选择任务中的冲动性。

睾丸激素的循环水平与冲动呈正相关。本研究调查了在跨期选择任务中给予睾丸激素对冲动的影响，在这种情况下，参与者可以在较小的较早奖赏和较大的较晚奖赏之间进行选择。健康的年轻男性参与者（n = 111）采用双盲，安慰剂对照，受试者间设计接受单剂量150 mg睾丸激素凝胶。给药后180分钟，参与者执行了决策任务。无模型（即较高的无差异点）和基于模型的（即较陡的折现率）参数均表明，睾丸激素给药增加了冲动选择。这一发现支持以下假设：在实验室任务中，外源性睾丸激素会增加健康的年轻男性的冲动性。