Questions	Strongly Agree	Agree	Disagree	Strongly Disagree
1. I spend more and more time using my cell phone. (reverse-coded)	1	2	3	4
2. I have felt anxious over the past year when not taking a cell phone with me. (reverse-coded)	1	2	3	4
3. I’m anxious if no one contacts with my cell phone. (reverse-coded)	1	2	3	4
4. When I use my cell phone time passes quickly. (reverse-coded)	1	2	3	4
5. I have felt isolated when I am without a cell phone. (reverse-coded)	1	2	3	4
6. Without a cell phone, I can’t live because it’s uncomfortable. (reverse-coded)	1	2	3	4