Table 2.

Correlations between IQ scores

	FIQ	VIQ	PIQ	VCI	WMI	POI
VIQ	0.91
PIQ	0.91	0.66
VCI	0.75	0.88	0.52
WMI	0.72	0.67	0.61	0.36
POI	0.78	0.57	0.84	0.53	0.51
PSI	0.63	0.53	0.65	0.41	0.39	0.40

VCI, Verbal comprehension index; WMI, working memory index; PSI, processing speed index.