|
1. Caffeine picks me up when I am feeling tired
|
199
|
3.55
|
0.252
|
|
2. I feel less sleepy after having caffeine
|
193
|
3.35
|
0.241
|
|
3. Caffeine improves my attention
|
195
|
3.38
|
0.242
|
|
4. Caffeine makes me feel more energetic
|
198
|
3.54
|
0.252
|
|
5. Caffeine makes me feel more alert
|
197
|
3.53
|
0.252
|
|
6. Caffeine improves my concentration
|
194
|
3.45
|
0.248
|
|
7. I can work longer if I have caffeine
|
194
|
3.25
|
0.233
|
|
8. Caffeine improves my athletic performance
|
194
|
3.23
|
0.232
|
|
9. Workouts are better after having caffeine
|
194
|
3.39
|
0.243
|
|
10. I can exercise longer if I have caffeine
|
197
|
3.10
|
0.221
|
|
11. Caffeine increases my motivation to work
|
194
|
3.36
|
0.239
|
|
12. Caffeine at any time of day throws off my sleep
|
194
|
3.06
|
0.241
|
|
13. I am easily stressed after having caffeine
|
197
|
2.41
|
0.172
|
|
14. Caffeine makes me feel nervous
|
195
|
2.72
|
0.195
|
|
15. I would be unable to function without caffeine
|
194
|
2.53
|
0.182
|
|
16. Caffeine improves my mood
|
194
|
3.47
|
0.249
|
