So, imagine the pig has a heavy collar and to reward the pig for walking forward you might remove the heavy collar.

所以，想象这头猪带着很重的项圈,作为对这头猪向前走的奖励,你可以把项圈拿掉。

耶鲁公开课 - 心理学导论课程节选

Would you go to the ticket window and use your credit card to pick up the tickets or would you just walk away in anger and annoyance?

你会去购票窗口,用你的信用卡再买票吗,还是带着烦闹愤怒而走掉呢？

耶鲁公开课 - 金融市场课程节选