Table 4.

Correlations Between Raw IQ Matrix Reasoning and Vocabulary Scores and Drift Rates for Item and Associative Recognition and Cued and Free Recall

Participants	Measure	IQ vocab	Item drift	Assoc. drift	Cued recall	Free recall
College age	IQ matrix	0.602	0.362	0.524	0.420	0.459
	IQ vocab		0.604	0.675	0.683	0.648
	Item drift			0.628	0.595	0.405
	Assoc. drift				0.724	0.574
	Cued recall					0.614
60-74 year olds	IQ matrix	0.690	0.666	0.497	0.572	0.613
	IQ vocab		0.581	0.473	0.678	0.488
	Item drift			0.718	0.745	0.719
	Assoc. drift				0.729	0.519
	Cued recall					0.652
75-90 year olds	IQ matrix	0.200	0.267	0.176	0.225	0.247
	IQ vocab		0.343	0.282	0.390	0.308
	Item drift			0.483	0.208	0.580
	Assoc. drift				0.279	0.376
	Cued recall					0.450