Table 8. Sleep quality as a mediator between chronotype and daydreaming, and chronotype and mind wandering.

Study 1; Dependent variable = Daydream Frequency
	IV	mediator	DV	IV β	Mediator β	Age β	Gender β
Path c	rMEQ	−	DF	β = −.190**	−	−.184*	.185*
Path a	rMEQ	C7	−	−.261***	−	−.147*	.002
Paths b and c’	rMEQ	C7	DF	−.106 (p = .103)	.323***	−.137*	.185**
Final model: R = .478; adjusted R2 = .214; F(4, 208) = 15.423; Indirect effect (a * b): bias corrected† 95% C.I. = −.4877 to −.1190
Study 3; Dependent variable = Daydream Frequency
	IV	mediator	DV	IV β	Mediator β	Age β	Gender β
Path c	rMEQ	−	DF	−.110 (p = .075)	−	.034	−.064
Path a	rMEQ	C7	−	−.212**	−	.041	.021
Paths b and c’	rMEQ	C7	DF	−.044 (p = .463)	.311***	.021	−.071
Final model: R = .336; adjusted R2 = .100; F(4, 265) = 8.445; Indirect effect (a * b): bias corrected 95% C.I. = −.3612 to −.0858
Study 2; Dependent variable = Mind Wandering
	IV	mediator	DV	IV β	Mediator β	Age β	Gender β
Path c	rMEQ	−	MW	−.201**	−	−.100	.111
Path a	rMEQ	C7	−	−.202**	−	−.049	.135
Paths b and c’	rMEQ	C7	MW	−.132 (p = .059)	.341***	−.083	.065
Final model: R = .426; adjusted R2 = .164; F(4, 185) = 10.250; Indirect effect (a * b): bias corrected 95% C.I. = −.2595 to −.0455
Study 3; Dependent variable = Mind Wandering
	IV	mediator	DV	IV β	Mediator β	Age β	Gender β
Path c	rMEQ	−	MW	−.208**	−	.052	.009
Path a	rMEQ	C7	−	−.212**	−	.041	.021
Paths b and c’	rMEQ	C7	MW	−.138*	.335***	.039	.002
Final model: R = .392; adjusted R2 = .141; F(4, 265) = 12.053; Indirect effect (a * b): bias corrected 95% C.I. = −.3285 to −.0781

DF = Daydream frequency; MW = Mind Wandering; rMEQ = reduced Morningness-Eveningness Questionnaire;

C7 =  PSQI component 7.

^†Taking account of the difference between the initial and the mean indirect effect estimates.

*p≤.05; **p≤.01; ***p≤.0005.