Table 6.

Correlations between the Gibson Test and the Woodcock Johnson tests

Gibson Test	Woodcock Johnson III	ruc	rc
Short-term memory	Numbers reversed	0.71	0.84
Logic and reasoning	Concept formation	0.71	0.77
Processing speed	Visual matching	0.50	0.60
Visual processing	Spatial relations	0.70	0.82
Long-term memory	Visual auditory learning	0.43	0.53
Word attack	Word attack	0.82	0.93
Auditory processing	Spelling of sounds	0.75	0.90
	Sound awareness	0.70	0.82

Notes: r_uc, uncorrected correlation calculated with Pearson’s product momentum of z scores; r_c, corrected correlation using r_xy/√ (r_xx × r_yy).