Table 3 The eigenvectors of the first three factors ordered
Factor 1 | Factor 2 | Factor 3 | |
|---|---|---|---|
Item6: Workouts are better after having caffeine | 0.710 | − 0.258 | 0.311 |
Item3: Caffeine improves my athletic performance | 0.650 | − 0.226 | 0.403 |
Item13: I would be unable to function without caffeine | 0.456 | − 0.225 | 0.263 |
Item7: Caffeine increases my motivation to work | 0.778 | − 0.217 | 0.172 |
Item15: I can exercise longer if I have caffeine | 0.732 | − 0.161 | 0.260 |
Item5: Caffeine improves my mood | 0.693 | − 0.146 | − 0.075 |
Item1: Caffeine picks me up when I’m feeling tired | 0.654 | − 0.122 | − 0.342 |
Item16: Caffeine makes me feel more energetic | 0.766 | − 0.050 | − 0.021 |
Item14: Caffeine improves my attention | 0.790 | − 0.023 | − 0.146 |
Item11: Caffeine improves my concentration | 0.786 | − 0.012 | − 0.257 |
Item4: I feel less sleepy after having caffeine | 0.641 | 0.249 | − 0.336 |
Item10: Caffeine makes me feel more alert | 0.702 | 0.266 | − 0.277 |
Item8: Caffeine at any time throws off my sleep | 0.474 | 0.489 | − 0.356 |
Item12: Caffeine helps me work over long period of time | 0.752 | 0.049 | 0.038 |
Item2: I am easily stressed after having caffeine | 0.265 | 0.582 | 0.592 |
Item9: Caffeine makes me feel nervous | 0.251 | 0.787 | 0.299 |