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TIME's The Brief TIMEnewsbrief

Struggle to Explain Motivation

There may never be a convincing explanation for such devastating acts of violence, but experts say certain personality disorders such as extreme narcissism can help push people who want to take their own lives to take those of others at the same time. http://goo.gl/6bSgld More From The Brief: time.com/newsletter/the-brief/ #FullNewsAudioAvailable

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