Table 1.

Reliability estimates for exploratory and confirmatory factor analysis

SBQ Subscale	Exploratory FA α	Confirmatory FA α
Personal Deficiency Related to Winter (PD)	.94 (10 items)	.93 (8 items)
Global Summer Positivism (GS)	.81 (6 items)	.71 (3 items)
Global Winter Negativity (GW)	.93 (5 items)	.93 (5 items)
Lack of Perceived Seasonal or Weather Effect (LPSWE)	.66 (4 items)	.66 (4 items)
Effects from Lack of Light (ELL)	.91 (8 items)	.87 (6 items)

Note: Chronbach’s alpha shown EFA subscales, and for CFA subscales which had a total of seven items removed from PD, GS, and ELL subscales after CFA refinement based on modification indices.