Table 1. Details of phenotypic measures.
| ALSPAC | SLI families | Dyslexia families | Dyslexia cases | Raine | |
| VIQ (mean± SD) | WISC (109.1±16.3) | WISC (100.1±15.4) | BAS/WAIS (60.8±8) | BAS/WAIS (56.9±8) | PPVT (104.9±11.5) |
| PIQ (mean ± SD) | WISC (101.3±16.7) | WISC (95.4±16.7) | BAS (55±9) | BAS (55.5±7.4) | RCPM (61.8±25.8) |
| Age at test in years | 8 | 6–16 | 6–25 | 8–18 | 10 |
| Male∶female (ratio) | 2,946∶2,959 (1.00) | 319∶186 (1.70) | 384∶254 (1.51) | 196∶87 (2.25) | 708∶683 (1.03) |
| VIQ∶READ correlation | 0.57 | 0.62 | 0.40 | 0.44 | 0.40 |
| PIQ∶READ correlation | 0.35 | 0.37 | 0.32 | 0.41 | 0.20 |
VIQ (verbal IQ); PIQ (performance (non-verbal) IQ); SD (standard deviation); WISC (Wechsler Intelligence Scale for Children); BAS (British Abilities Scales); WAIS (Wechsler Adult Intelligence Scale); PPVT (Peabody Picture Vocabulary Test); RCPM (Raven's Coloured Progressive Matrices).