. Author manuscript; available in PMC: 2010 Jul 19.

Published in final edited form as: J Psychophysiol. 2009;23(2):52–62. doi: 10.1027/0269-8803.23.2.52

Table 2.

Relationships between gender, age, highest level of completed education (all n = 60), Shipley vocabulary, abstraction, and total scores (n = 48) with P50, N100, and P200 ratio, difference score, and S1 and S2 amplitudes

	P50				N100				P200
	Ratio	Δ_S1S2	S1	S2	Ratio	Δ_S1S2	S1	S2	Ratio	Δ_S1S2	S1	S2
	T-tests (df = 58)
Gender	0.97	−1.50	−1.58	−0.36	1.06	0.88	0.73	0.10	1.63	−1.13	−0.88	−0.04

	Correlations (Pearson’s r, df = 58)
Age	.11	−.12	−.06	.05	−.01	.07	.13	.15	.44	−.38	−.28	.05
Education	−.08	.21	.10	−.10	−.37	−.35	−.31	−.08	.01	.30	.37	.32
T-score (df = 46)
Vocabulary	−.23	.10	−.08	−.21	−.07	−.17	−.23	−.20	−.29	.35	.29	.06
Abstraction	−.15	.20	.11	−.07	−.23	−.32	−.33	−.16	−.26	.47	.47	.26
Total	−.22	.20	.04	−.17	−.18	−.30	−.33	−.19	−.32	.48	.44	.19

Note. Δ_S1S2: Difference score. p < .05, p < .005.