Table 1.
| Demographics | Non-musicians (n=18) | Vocalists (n=21) | Percussionists (n=21) | Test Statistic | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M(SD) | Min | Max | M(SD) | Min | Max | M(SD) | Min | Max | H(p value) | |
|
|
||||||||||
| Age (yrs) | Mdn=23.5 (3.5) | 18 | 30 | Mdn=23.0 (3.9) | 18 | 31 | Mdn=24.0 (5.4) | 18 | 35 | 0.208 (.901) |
| Non-verbal IQ (percentile) | 74.4 (19.5) | 21 | 99 | 72.7 (23.3) | 26 | 99 | 72.9 (21.4) | 21 | 95 | 0.017 (.991) |
| Pure-tone thresholds (R) | 8.9 (4.2) | 1.67 | 18.33 | 7.3 (3.6) | 3.33 | 13.33 | 7.9 (4.2) | −1.7 | 13.33 | 1.297 (.523) |
| Pure-tone thresholds (L) | 7.8 (4.9) | 0 | 20 | 7.1 (4.8) | −1.67 | 15 | 6.5 (4.9) | −5 | 16.67 | 0.408 (.816) |
| Musical history* | U(p value) | |||||||||
|
| ||||||||||
| Age of onset of musical training (yrs) | Mdn=7.0 (3.5) | 3 | 18 | Mdn=9.0 (2.4) | 3 | 13 | 291.5 (.071) | |||
| Years of musical experience | 16.1 (4.8) | 7 | 25 | 15.9 (6.7) | 8 | 32 | 200.0 (.605) | |||
| Current hours of practice per week | 10.8 (8.4) | 1 | 30 | 12.4 (8.0) | 1 | 30 | 234.0 (.530) | |||
| Self-rated proficiency on primary instrument | 8.2 (1.4) | 5 | 10 | 8.8 (1.2) | 6 | 10 | 281.5 (.115) | |||
| Sight-reading proficiency on primary instrument | 6.9 (2.5) | 2 | 10 | 6.6 (2.4) | 1 | 10 | 197.0 (.548) | |||
| Improvisation proficiency on primary instrument | 6.9 (1.7) | 4 | 10 | 7.5 (2.5) | 2 | 10 | 364.5 (.262) | |||
*
Non-musician participants excluded from group comparisions related to musical history