Table 2.

Measured variables used in the moderator analysis, including the number of studies that included reports of these measures

	Psychological construct	Measures	n
Standardised measures	Non‐word reading	TOWRE, WRMT‐R, Castles and Coltheart's Non‐word list	8
	Real word reading	TOWRE, WRMT‐R, WRAT‐III, Castles and Coltheart's irregular word list	8
	Non‐verbal IQ	Block design from WAIS‐III, WAIS‐R, WISC‐R95,WISC‐III; matrices reasoning from WAIS; MAT; KBIT matrices	19
	Digit span	CTPP, WAIS‐III, WAIS‐R, WISC‐R95	13
	Verbal abilities	Receptive vocabulary from ROWPVT; PPVT‐III; CELF‐III, BPVS; BPVS‐2; expressive vocabulary from WISC‐R95, WAIS‐III, WAIS‐R, WISC‐III; similarities from WAIS‐III;	16
Non‐standardised measures	Non‐word reading	Not specified by authors or not a published test	13
	Real word reading		10
	Phoneme deletion		8
	Spoonerisms		8

Abbreviations: BPVS, British Picture Vocabulary Scale; BPVS‐2, British Picture Vocabulary Scale – 2nd Edition; CELF‐III, Clinical Evaluation of Language Fundamentals; CTPP, Comprehensive Test of Phonological Processing; KBIT, Kaufman Brief Intelligence Test; MAT, Matrix Analogies Test – Expanded Form; PPVT‐III, Peabody Picture Vocabulary Test‐III; ROWPVT, Receptive subtest of the One Word Picture Vocabulary Test; TOWRE, Test of Word Reading Efficiency; WAIS‐R, Wechsler Adult Intelligence Scale – Revised; WAIS‐III, Wechsler Adult Intelligence Scale; WISC‐R95, Wechsler Intelligence Scale for Children; WISC‐III, Wechsler Intelligence Scale for Children – Revised; WRAT‐III, Wide Range Achievement Test; WRMT‐R, Woodcock Reading Mastery Tests‐Revised.