Table 1.

Mean performance per age group and age group differences on cognitive, linguistic, and auditory measures.

Measure	Younger adults		Older adults		Age group difference
	M	SD	M	SD	t	p
Working memory	67.37	17.18	46.80	18.72	6.57	<0.001
Processing speed	68.10	9.44	48.73	11.01	10.88	<0.001
Vocabulary	0.68	0.08	0.87	0.06	−15.80	<0.001
Attention	1.97	0.44	2.05	0.62	−0.96	0.340
Hearing (PTAH)	0.90	5.56	23.31	10.28	−15.96	<0.001

t-tests tested two-tailed.