Table 4. Table of frequencies for the final questionnaire for Experiments 1 and 2.
| F-stop | Fatiguing | Irritated | Headache | Prefer |
|---|---|---|---|---|
| Experiment 1 | ||||
| f4 | 8 | 7 | 2 | 5 |
| f11 | 9 | 7 | 5 | 6 |
| f22 | 2 | 5 | 7 | 8 |
| Experiment 2 | ||||
| f4 | 5 | 6 | 5 | 7 |
| f11 | 11 | 9 | 4 | 4 |
| f22 | 3 | 4 | 3 | 8 |
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