Table 1.
Characteristics for the sample of 626 participants (Sample A) that underwent three tests, the subset of 200 participants who performed ten tests (Sample B) and up to 253 participants who were tested with five visual illusions (Samples C; n = 173 to 253).
| Samples | Female subjects | Male subjects | p |
|---|---|---|---|
| Sample A (n = 626) | 342 | 284 | |
| Age (mean ± sd) | 32.19 ± 15.16 | 33.09 ± 16.03 | p = 0.48 |
| Age range | 18–75 | 18–82 | |
| Sample B (n = 200) | 113 | 87 | |
| Age (mean ± sd) | 43.67 ± 23.5 | 46 ± 25.98 | p = 0.51 |
| Age range | 18–86 | 18–90 | |
| Samples C | |||
| Ebbinghaus (n = 209) | 93 | 116 | |
| Age (mean ± sd) | 35.37 ± 17.01 | 33.00 ± 15.25 | p = 0.29 |
| Age range | 18–73 | 18–80 | |
| Müller-Lyer (n = 253) | 115 | 138 | |
| Age (mean ± sd) | 36.02 ± 16.01 | 33.47 ± 14.19 | p = 0.19 |
| Age range | 18–73 | 18–80 | |
| Ponzo (n = 173) | 76 | 97 | |
| Age (mean ± sd) | 28.92 ± 10.18 | 28.95 ± 9.49 | p = 0.99 |
| Age range | 18–55 | 18–54 | |
| Ponzo-Hallway (n = 194) | 84 | 110 | |
| Age (mean ± sd) | 36.67 ± 17.44 | 32.72 ± 14.82 | p = 0.10 |
| Age range | 18–73 | 18–80 | |
| Tilt (n = 200) | 93 | 107 | |
| Age (mean ± sd) | 38.64 ± 16.28 | 37.13 ± 14.88 | p = 0.50 |
| Age range | 18–73 | 18–80 | |