Table 3.

Split half correlations of individual differences tasks

Construct	Task	Split half correlation
Language experience	ART	0.721
	ERVT	0.702
	NAART	0.827
Verbal working memory	Reading	0.623
	Listening	0.574
	Operation	0.807
Inhibitory control	Flanker	0.287
	Anti. Acc.	0.891
	Anti. RT	0.892
	Stroop	0.834
Phonological ability	Pseudo. Rep.	0.791
	BNW	0.531
	PR	0.459
Perceptual speed	Letter	0.893
	Pattern	0.916

Notes: Tasks were split into balanced halves, scores were calculated for each subject in each half in the same manner as in the main analyses, and the two lists of subject scores were correlated. ART = Author Recognition Test (Stanovich & West, 1989; Acheson et al., 2008); ERVT = Extended Range Vocabulary Test (Ekstrom et al., 1976); CRH = Comparative Reading Habits (Acheson et al., 2008); NAART = North American Adult Reading Test (Blair & Spreen, 1989); RTE = Reading Time Estimate (Acheson et al., 2008); “Listening” = Listening Span task (Daneman & Carpenter, 1986; Stine & Hindman, 1994; Unsworth et al., 2005); “Operation” = Operation Span task (Turner & Engle, 1989; Unsworth et al., 2005); “Reading” = Reading Span task (Daneman & Carpenter, 1986; Stine & Hindman, 1994; Unsworth et al., 2005); “Anti.Acc” and “Anti.RT” refer to accuracy and median reaction time on the Antisaccade Task (Kane et al., 2001), respectively; “Flanker” = Flanker task (Eriksen & Eriksen, 1974); ; “Stroop” = Stroop task (Stroop, 1935; Brown-Schmidt, 2009); “Pseudo.Rep” = Pseudoword Repetition (Gupta, 2003); BNW = Blending Nonwords (Wagner et al., 1999); PR = Phoneme Reversal (Wagner et al., 1999); “Letter” = Letter Comparison (Salthouse & Babcock, 1991); “Pattern” = Pattern Comparison (Salthouse & Babcock, 1991).