Learning how different cultures signal respect can help you avoid misunderstandings.

学习不同的文化如何表达尊重，这可以帮助你避免引起误解。

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"As the rats were learning, that reinforcement signal goes away, because you really don't need it," Graybiel says.

“当老鼠学会了，加强信号也不见了，因为真的不需要了，”布耶尔说。

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The learning moment arrives when they learn just how powerful a signal these "body language" cues send.

当他们了解他们的身体语言所不自觉地发出的信号有多强烈时，他们已经有所收获了。

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The answer is actually quite simple: consumers of higher education use prestige as the signal of higher quality because commonly accepted measures of actual student learning do not exist.

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