What makes a great speech? Persuasion.

成就一场演讲的是什么？说服力。

This is what the experts at Quantified Impressions, a firm that analyzes communications skills, report is most critical to connect with a crowd--when the crowd is college grads, at least.

分析沟通技能公司Quantified Impressions的专家认为，这是与听众建立联系的关键点——至少当听众是大学毕业生时是这样的。

Examining 31 college commencement speeches cited in the press as compelling and memorable, the firm evaluated these talks against a database of ordinary speeches and everyday conversation. The analysis included 80 different metrics. Persuasion turned out to be the metric, or variable, that the 31 speeches had most in common.

这家公司选出了31场被媒体称为精彩难忘的毕业嘉宾演讲，对照一般演讲和日常对话数据库进行了评估。分析涵盖了80项不同的指标，结果发现，这31场演讲最普遍的共性就是说服力指标或变量。

And based on that, Quantified Impressions came up with a list of 10 best speeches.

根据这项分析评估，Quantified Impressions评选出了十佳毕业典礼演讲。

"These speeches are the best because the speakers persuade the audience to be emotionally moved," says Noah Zandan, Quantified Impressions' president.

“这些演讲非常出色，演讲者从情感上说服了听众，让他们真心被打动，”Quantified Impressions的总裁诺阿·赞登说。

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