Table 2.

Target reaction time, time, hit rates, false alarms

		Young		Middle-age		Old		Age Effects within each Cognitive Group	Overall Age Effect	Overall Cognitive Status Effect	Age by Cognitive Status Interaction
		Mean	SEM	Mean	SEM	Mean	SEM	p-value	p-value	p-value	p-value
Reaction Time to Targets (ms)	Average	965.3	66	989.3	60	989.0	56	ns	ns	<0.05	ns
	High	826.3	42	938.4	50	888.1	55	ns
% Correct Hits	Average	92.9	1.4	92.4	0.9	87.9	2.4	ns	ns	<0.01	ns
	High	96.3	1.2	94.1	2.6	97.0	1.2	ns
% False Alarm to Novels	Average	1.2	0.4	0.7	0.4	0.5	0.3	ns	ns	ns	ns
	High	0.7	0.5	0.3	0.3	0.3	0.2	ns