Answered by Evan DeFilippis

Evan DeFilippis 的回答：

Nodding your head up and down while asking a question substantially increases the likelihood that someone will answer affirmatively.?When other people nod in response to something you say, you are likely to be??perceived as an expert?on the subject.??

询问别人问题时多点点头可以有效提高对方给予肯定回答的可能性。如果他们对你说的某些话点头以示赞同，则说明你已经被当成这个领域的专家了。

If your friend is giving a lecture and you want to produce contagious agreement in the room, vigorously nod your head at a rate of one bob per second, and you can independently alter the opinion of the entire audience.??

如果你的朋友在做演讲，而你想带动全场人一起对其给予肯定时，那就以每秒一次的频率有节奏地用力点头，如此你就就可以轻松掌控现场观众的情绪了。

Answered by Zaira Sheeren Khan

Zaira Sheeren Khan的回答：

If a song stuck in your head...

如果你的脑中无限循环某首歌……

There's something called the Zeigarnik effect which explains that your mind tends to think of things left unfinished.

有一种心理学效应叫做蔡格尼克记忆效应，是指你的脑子会趋向于记住没有结束的事情。

Think of the end of the song, this will allow your mind to close off the loop.

想想这首歌的结尾，你的大脑就会结束这个循环。

Answered by Aseem Agrawal

Aseem Agrawal的回答：

In high school and university. When there was about 10-15 minutes left in class I would zip my bag up, loudly a couple of times, up and down. What resulted was a cascading effect—everybody starting to put their things away. This would oftentimes lead the prof or teacher to let the class out early as everyone is clearly packing up. The sound of the zipper triggered something in everybody—Pavlovian conditioning in action.

高中和大学的时候，每次下课前10-15分钟时，我都会来来回回大声地拨拉我书包上的拉链。这会带来连锁反应——每个人都开始收拾书包了，教授和老师就会提前下课。拉拉链的声音会刺激大家去整理书包——这是巴普洛夫条件反射在起作用。

Edit: To clarify. I would just do the two zips. Then I'd settle back with my pen in my hand and look intently at the professor and take notes while the rest of the class packed up. It was never obvious who started it. In retrospect it was a shithead thing to do but I felt like a wizard every time it worked.

补充：解释一下。我只是拉两下拉链，之后就乖乖拿着笔静静地看着教授做笔记，而这时全班同学都在收拾书包。没人在乎是谁先开始的。现在回想一下觉得真的好傻逼啊，但我当时觉得自己简直是个奇才！因为这招每次都管用！