More American adults have taken to texting in the past year, but teens still take the crown when it comes to using their phones for text-messaging, with 87 percent of them doing so, according to a new study.

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"We’ve reached a point where enough other people are texting that (adults) are drawn into using it because they can finally use it to communicate with a substantial number of their friends and family," said Amanda Lenhart, Pew senior research specialist.

"It may be that folks have been pushed by pricing into unlimited texting plans, which has the effect of encouraging people with those plans to text more, because they no longer think of the cost, and then text more people more often."

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