In the study, Pew examined American adults' gadgets and services, their activities and their attitudes toward technology. About 60 percent of the overall respondents didn't have significant attachments to mobile devices, either because they didn't have such gadgets or because they were fine with desktop PCs. But nearly 40 percent did say they were glued to their mobile devices. And the Ambivalent Networkers make up a fifth of that group.

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