But these positive affects didn't become widespread by accident.

但是这些积极效应分布面广并非巧合。

This pain tolerance was found to be due to the laughter itself and not simply from a change in positive affect.

这种对疼痛的耐受性被发现是由于笑本身，而不仅仅是由于积极影响的变化。

Because that can have a direct effect that, ultimately, you said, it leads to fluency, this notion of positive affect towards the message and the messenger.

因为这会产生直接的影响，最终，你说，它会导致流畅性，这种对信息和信使产生积极影响的概念。

In a study of healthy individuals, I demonstrated that a single high dose of psilocybin could reduce negative affect in volunteers for at least a week after psilocybin, and increase positive affect for at least a month after a single high dose of psilocybin.

在一项针对健康个体的研究中，我证明单次高剂量裸盖菇素可以在裸盖菇素后至少一周内减少志愿者的负面影响，并在单次高剂量裸盖菇素后至少一个月内增加积极影响。