. Author manuscript; available in PMC: 2020 Feb 1.

Published in final edited form as: J Abnorm Child Psychol. 2019 Feb;47(2):209–219. doi: 10.1007/s10802-018-0433-7

Table 2.

Average alpha power at each electrode site and Intraclass correlations for frontal asymmetry

Medial	M	(SD)	Lateral	M	(SD)
F4 age 3	1.87	(0.38)	F8 age 3	1.60	(0.33)
F3 age 3	1.86	(0.36)	F7 age 3	1.63	(0.33)
F4 age 6	1.66	(0.37)	F8 age 6	1.37	(0.35)
F3 age 6	1.67	(0.41)	F7 age 6	1.37	(0.36)
F3-4 (open)	.08		F7-8 (open)	.20^***
F3-4 (closed)	.07		F7-8 (closed)	.26^***

Frontal alpha for each electrode site at each age (averaged across eye recording condition). F corresponds to frontal electrodes; odd numbers correspond to the left hemisphere and even numbers correspond to the right hemisphere. The intraclass correlation are given for both eyes open and closed conditions.

^**

p< .01

^***

p<.001