The purpose of this two-phase, exploratory mixed methods study was to explore the
dimensions of nomophobia with the intent of using these findings to develop and validate a
questionnaire to measure nomophobia among U.S. college students. The first phase of the study
was a qualitative exploration of nomophobia by interviewing undergraduate students at a large
Midwestern university. The qualitative findings from this initial exploration were then developed
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into a questionnaire aimed at measuring nomophobia. In the second phase of the study, the
questionnaire, referred to as Nomophobia Questionnaire (NMP-Q), was validated with a large
sample of undergraduate students