Table 5.

Components of variance in explaining VIQ, PIQ, and RCPM.

	Components	Derived from R2 by	VIQ	PIQ	RCPM
④	Unique contribution of age	①–③	0.185 (=0.333–0.148)	0.225 (=0.310–0.085)	0.116 (=0.157–0.041)
⑤	Unique contribution of SSRT	①–②	0.023 (=0.333–0.310)	0.002 (=0.310–0.308)	0.000 (=0.157–0.157)
⑥	Age-related contribution of SSRT	①–④–⑤	0.125 (=0.333–0.185–0.023)	0.083 (=0.310–0.225–0.002)	0.041 (=0.157–0.116–0.000)