That group exhibited more violent behavior in the eighth year of the study than those who did not have head injuries.

在研究的第八年，那一组比没有头部受伤的人表现出了更多的暴力行为。

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The study found that the use of punitive behavior correlates strongly with reduced individual payoff, and bestows no benefit on the group as a whole.

这个研究发现惩罚行为的使用与减少个体盈利有很强的相关性，并且在总体上不会给整个群体带来好处。

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In the study neuroscientists at Pitié-Salpêtrière Hospital in Paris turned to a unique group of subjects: individuals with REM sleep behavior disorder (RBD).

在巴黎Pitié-Salpêtrière 医院神经科学家进行的研究中，他们找来了一组特殊的研究对象：一些有着快速眼动睡眠行为障碍（RBD）的人。

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All this may seem obvious, but it is clearly worth me prattling on about it, because the recently released 14th Annual Mystery Shopping Study by the etailing group found some appallingly bad behavior among merchants on this topic.

FORBES: Abandoned Online Shopping Carts: How to Close Those Deals

In a recent Kelton Group study my firm commissioned, titled Social Commerce: Buying Behavior and Influence Online, consumers were asked who they were likely to trust the most and least for product recommendations.

FORBES: Celebrity Endorsements: 15 Minutes of Fame...Or Shame?

Those who witnessed rudeness also were less willing to invest extra effort to help others in their group, according to the study, published in 2009 in Organizational Behavior and Human Decision Processes.

WSJ: Anger's Effects on Those Who Witness It