Table 2.

Slopes for RT and Accuracy by Set Size, Separately for Low (2–4) and High (4–6) Set Sizes and Younger and Older Adults

	Slopes 2–4			Slopes 4–6			Slopes Difference
	Young	Old	t Test	Young	Old	t Test	Young	Old	t Test
RT	43.79	62.69	1.38	64.10	48.92	0.87	20.31	−13.77	1.42
ACC	−0.17	−0.21	0.41	−0.16	−0.27	1.04	0.01	−0.05	0.36
Throughput	0.98	0.72	2.16**	0.75	0.02	3.95***	−0.23	−0.7	1.93*

t tests between groups (two tailed): df = 40.

^*p < .1.

^**p < .05.

^***p < .01.