Table 1.
Mean age and years of education of the groups of synaesthetes and the respective control groups.
| Synaesthetes | Controls | ||
|---|---|---|---|
| M (SD) | M (SD) | ||
| GC | Age | 46.79 (18.19) | 48.21 (18.03) |
| Education | 11.53 (1.76) | 12.29 (1.81) | |
| SC | Age | 35.29 (20.06) | 35.53 (21.50) |
| Education | 12.59 (1.33) | 12.94 (1.89) | |
| GCSC | Age | 31.33 (11.77) | 31.81 (13.40) |
| Education | 11.74 (1.58) | 12.57 (1.33) | |
| SS | Age | 32.74 (13.58) | 32.16 (14.23) |
| Education | 12.97 (1.14) | 12.61 (1.21) | |
Note. GC = grapheme-colour synaesthetes; SC = sound-colour synaesthetes; GCSC = grapheme-and-sound-colour synaesthetes; SS = sequence-space synaesthetes.