Table 2.

ALSPAC phenotype measures

Measure	Domain
Phoneme deletion (PD) age 7 years	Reading
Single-word reading (SWR7) age 7 years	Reading
Single non-word reading (SNR) age 7 years	Reading
Single-word reading (SWR9) age 9 years	Reading
Wechsler objective language dimensions (WOLD) verbal comprehension age 8 years	Language
Nonword repetition task (NWR) age 8 years	Language
Wechsler Intelligence Scale for Children (WISC) full scale IQ (FSIQ) age 8 Years	IQ
Wechsler Intelligence Scale for Children (WISC) verbal IQ (VIQ) age 8 Years	IQ
Wechsler Intelligence Scale for Children (WISC) performance IQ (PIQ) age 8 Years	IQ