Table 3.

Descriptive subgroup summaries for each of the three components denoting face-categorization (face – house amplitude), split by age. Note: All values are in μV and are based on the difference in mean amplitude of the ERP component for face minus houses; n = subgroup size, Min. = minimum, Max. = maximum, SD = standard deviation.

	Visit1					Visit2
P1	n	Mean	Min.	Max.	SD	n	Mean	Min.	Max.	SD
Negative difference	44	−6.83	−16.7	−1.63	3.92	53	−7.82	−18.13	−1.64	4.86
No difference	14	−0.34	−1.48	1.26	0.98	13	−0.34	−1.26	0.77	0.70
Positive difference	22	6.95	1.76	19.57	4.99	14	8.05	2.27	22.6	6.59
N290
Negative difference	66	−10.94	−27.06	−1.73	6.22	71	−12.00	−35.08	−2.15	7.53
No difference	5	0.19	−0.45	1.01	0.63	4	−0.07	−0.57	1.24	0.87
Positive difference	9	5.80	2.46	10.54	2.53	5	7.97	2.20	17.88	5.89
P400
Negative difference	68	−11.87	−26.85	−1.60	6.59	66	−12.97	−31.12	−2.73	6.46
No difference	5	−0.40	−1.39	1.13	1.05	7	0.22	−1.41	1.39	1.12
Positive difference	7	7.10	3.66	10.90	3.08	7	5.83	1.58	12.34	4.13
Nc
Negative difference	14	−4.16	−14.27	−1.51	3.32	14	−6.93	−25.91	−2.03	6.12
No difference	18	0.16	−1.40	1.36	0.93	17	0.09	−1.36	1.38	0.91
Positive difference	48	6.17	1.51	19.63	4.42	49	6.19	1.55	13.62	2.92