Table 2.

Error percentage (e) for the four participant groups reported for category and typicality

	Typical (%)	Atypical (%)	Nonmember (%)	Group mean (%)
Young normal participants
Birds	0.66	5.3	1.3	2.2
Fish	6	13.3	2	5.83
Vegetables	2.67	14.7	.66	4.67
Group Mean	3.15	11.1	1.34
Elderly normal participants
Birds	1.42	2.6	.6	0.44
Fish	1.33	10.7	3.3	1.57
Vegetables	2	4.7	1	.72
Group mean	1.59	6.03	1.67
Broca’s aphasic patients
Birds	10.6	23	5.74	6.46
Fish	2.83	21	11	7
Vegetables	0	7.62	2.39	2
Group mean	4.7	17.2	6.36
Wernicke’s aphasic patients
Birds	21	32.4	18	22.5
Fish	17.1	44.8	24.8	17.7
Vegetables	11.4	30.5	17.6	26.3
Group mean	16.2	34	19.2

Values in each cell represent the proportion of errors compared to the total number of responses in that participant group.