Table 3.

Mean RTs and standard deviations for category and typicality for the four groups

	Typical		Atypical		Nonmembers
	Mean	SD	Mean	SD	Mean	SD
Young normal participants
Birds	809	235	961	502	887	355
Fish	882	427	1090	526	930	384
Vegetables	914	330	1098	624	909	427
Group Mean	869	343	1050	555	910	391
Elderly normal participants
Birds	930	267	1004	455	935	311
Fish	925	257	1149	538	970	274
Vegetables	864	178	1168	652	962	294
Group Mean	897	232	1073	464	954	284
Broca’s aphasic patients
Birds	1705	1095	2209	1263	1939	1245
Fish	1531	744	2459	1627	1922	1160
Vegetables	1311	592	1844	1001	1767	901
Group Mean	1515	847	2101	1210	1847	1040
Wernicke’s aphasic patients
Birds	2521	1058	2688	1058	2581	1103
Fish	2503	1340	2557	1220	2654	1167
Vegetables	2179	1175	2571	1250	2438	1133
Group mean	2338	1109	2597	1114	2485	1064