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Item | M (SD) | Range | Corrected item total correlation | Alpha if item deleted |
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When I decrease the amount of time spent using my cell phone I feel less satisfied. (Tolerance) | 1.61 (.96) | 1–5 | .68 | .933 |
Tolerance—I need more time using my cell phone to feel satisfied than I used to need. (Tolerance) | 1.53 (.84) | 1–5 | .65 | .933 |
When I stop using my cell phone, I get moody and irritable. (Withdrawal) | 1.43 (.83) | 1–5 | .72 | .933 |
It would be very difficult, emotionally, to give up my cell phone. (Withdrawal) | 2.36 (1.36) | 1–5 | .62 | .934 |
The amount of time I spend using my cell phone keeps me from doing other important work. (Longer time than intended) | 1.70 (.99) | 1–5 | .74 | .932 |
I have thought in the past that it is not normal to spend as much time using a cell phone as I do. (Longer time than intended) | 1.73 (1.06) | 1–5 | .57 | .934 |
I think I might be spending too much time using my cell phone. (Great deal of timespent) | 1.67 (1.09) | 1–5 | .72 | .932 |
People tell me I spend too much time using my cell phone. (Great deal of time spent) | 1.60 (1.08) | 1–5 | .74 | .931 |
When I am not using my cell phone, I am thinking about using it or planning the next time I can use it. (Craving) | 1.86 (1.07) | 1–5 | .75 | .931 |
I feel anxious if I have not received a call or message in some time. (Craving) | 2.23 (1.23) | 1–5 | .67 | .932 |
I have ignored the people I’m with in order to use my cell phone. (Activities given up or reduced) | 2.09 (1.28) | 1–5 | .72 | .931 |
I have used my cell phone when I knew I should be doing work/schoolwork. (Activities given up or reduced) | 2.73 (1.56) | 1–5 | .68 | .933 |
I have used my cell phone when I knew I should be sleeping. (Use despite physical or psychological problems) | 2.66 (1.64) | 1–5 | .64 | .934 |
When I stop using my cell phone because it is interfering with my life, I usually return to it. (Use despite physical or psychological problems) | 1.85 (1.10) | 1–5 | .67 | .933 |
I have gotten into trouble at work or school because of my cell phone use. (Failure to fulfill role obligations) | 2.00 (1.38) | 1–5 | .56 | .935 |
At times, I find myself using my cell phone instead of spending time with people who are important to me and want to spend time with me. (Failure to fulfill role obligations) | 1.65 (.96) | 1–5 | .74 | .932 |
I have used my cell phone when I knew it was dangerous to do so. (Use in physically hazardous situations) | 2.45 (1.41) | 1–5 | .55 | .935 |
I have almost caused an accident because of my cell phone use. (Use in physically hazardous situations) | 2.13 (1.32) | 1–5 | .51 | .936 |
My cell phone use has caused me problems in a relationship. (Use despite social or interpersonal problems) | 1.53 (1.02) | 1–5 | .43 | .936 |
I have continued to use my cell phone even when someone asked me to stop. (Use despite social or interpersonal problems) | 1.69 (1.15) | 1–5 | .56 | .934 |
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