Table 3.

Factor loading for confirmatory factor analysis of the Korean MEQ (N=1,022)

Item	Factor 1	Factor 2	Factor 3	Factor 4
11	0.559 (0.699)	(0.002)	(0.169)	(0.178)
1	0.537(0.414)	(0.007)	(0.253)	(0.339)
18	0.531(0.490)	(0.007)	(0.334)	(0.040)
17	0.521(0.653)	(0.014)	(0.156)	(0.006)
9	0.436(0.418)	(0.237)	(0.239)	(0.274)
15	0.421(0.526)	(0.080)	(0.005)	(0.148)
7	(0.045)	0.653(0.950)	(0.004)	(0.051)
4	(0.195)	0.581(0.644)	(0.008)	(0.077)
5	(0.048)	0.576(0.946)	(0.032)	(0.035)
6	(0.011)	0.486(0.211)	(0.113)	(0.044)
19	(0.346)	(0.179)	0.748(0.460)	(0.144)
8	(0.262)	(0.022)	0.363(0.455)	(0.393)
2	(0.041)	(0.001)	0.324(0.753)	(0.171)
10	(0.183)	(0.031)	0.289(0.579)	(0.077)
14	(0.034)	(0.086)	0.234(0.214)	(0.038)
16	(0.116)	(0.052)	0.090(0.632)	(0.131)
12	(0.044)	(0.059)	0.031(0.587)	(0.117)
3	(0.093)	(0.046)	(0.110)	0.565(0.471)
13	(0.011)	(0.067)	(0.099)	0.372(0.562)

(): reference values from Caci et al. (2009)

Factor 1 (items 1, 9, 11, 15, 17 and 18): Peak Time; Factor 2 (items 4, 5 and 7): Morning Affect; Factor 3 (items 2, 8, 10, 12, 16 and 19): Retiring; Factor 4 (items 3 and 13): Rising

MEQ: Morningness-Eveningness Questionnaire

Loadings greater than |0.400| are in bold.