Table 2.

Frontal Alpha Asymmetry Reliability for Lights-On EEG Segments.

	8-Months		12-Months		18-Months
	Split- Half r	Cronbach’s alpha	Split- Half r	Cronbach’s alpha	Split- Half r	Cronbach’s alpha
N	132	132	86	86	81	81
Mean	0.69	0.81	0.73	0.80	0.71	0.82
SD	0.22	0.19	0.27	0.59	0.11	0.08
Median	0.73	0.84	0.75	0.86	0.71	0.83
Min	0.11	0.07	−1.00	−4.53	0.32	0.48
Max	−1.00	−0.96	0.99	0.99	0.97	0.98

Notes: Split-half average correlations are based on 100 random splits within each subject’s segment-by-segment data and then averaged across the sample (N).