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Data about how smartphone owners use their phones over the course of one week (Chapter 3) is taken from the American Trends Panel “experience sampling” survey, conducted November 10-16, 2014 among 1,635 respondents. Respondents were asked to complete two surveys per day for seven days (14 in total), using either an app they had installed on their phone (n=697) or by completing a web survey (n=938). All findings in this report are based on respondents who completed 10 or more surveys over the course of the week-long study period (n=1,035). The margin of sampling error for smartphone owners who completed 10 or more surveys is plus or minus percentage points. For more details about this survey, see Appendix C.