Table II.
Demographic and Psychometric Data of Dyslexia and Control Groups
| Group | ||||||
|---|---|---|---|---|---|---|
| Measure | Dyslexia Mean (SD) | Range | Control Mean (SD) | Range | P | Cohen's d |
| Age (in years) | 21.26 (3.64) | 18-30 | 21.6 (2.94) | 18-30 | n.s. | .1 |
| Raven's SPM | 79.4 (17.51) | 45-95 | 85.06 (13.08) | 50-95 | n.s. | .5 |
| Digit spana (combined) | 10.73 (2.54) | 1-12 | 14 (2.56) | 4-12 | < .01 | .9 |
| RAN objectsa | 104.4 (19.22) | 74-129 | 117.53 (10.73) | 93-133 | < .05 | .8 |
| RAN colorsa | 99.53 (13.3) | 80-124 | 112.4 (6.36) | 101-124 | < .01 | 1.2 |
| RAN numbersa | 103.6 (5.5) | 95-113 | 114.13 (4.24) | 107-120 | < .01 | 1.6 |
| RAN lettersa | 102.92 (6.21) | 85-111 | 112.53 (4.37) | 105-117 | < .01 | 1.9 |
| WRMT-R WIa | 96.26 (3.53) | 91-103 | 101.85 (2.58) | 95-105 | < .01 | 1.6 |
| WRMT-R WAa | 99.4 (5.36) | 92-113 | 112 (7.79) | 100-126 | < .01 | 1.9 |
| TOWRE SA (A+B)a | 97.66 (8.28) | 87-115 | 117 (12.68) | 100-137 | < .01 | 1.88 |
| TOWRE PD (A+B)a | 90.933 (9.19) | 72-112 | 113.2 (8.86) | 100-127 | < .01 | 2.7 |
| Spoonerism time | 136.44 (41.84) | 82-224 | 90.46 (26.06) | 63-150 | < .01 | .6 |
| Spoonerism accuracy | 8.466 (3.37) | 1-12 | 11.06 (2.21) | 4-12 | < .05 | .9 |
a
Standard scores (whereby smaller numbers are expected for dyslexic group), other scores are raw scores. Raven scores are presented in percentiles.