Table 4. Bivariate Correlations Between Sleep, Personality, and Demographics.

Personality and Sleep
	Chronotype (Higher Scores = Morningness)	Sleep Hygiene (Higher Scores = Worse)	Sleep Quality (Higher Scores = Worse)	Sleepiness (Higher Scores = More Sleepiness)
Con.	r = .35	r = −.29	r = −.17	r = −.25
	p<.001	p<.001	p<.001	p<.001
	N = 430	N = 429	N = 430	N = 431
Neur.	r = −.18	r = .37	r = .40	r = .23
	p<.001	p<.001	p<.001	p<.001
	N = 431	N = 429	N = 430	N = 432
Agree.	r = .15	r = −.17	r = −.06	r = −.18
	p = .002	p<.001	p = .21	p<.001
	N = 433	N = 431	N = 432	N = 434
Extra.	r = .07	r = −.06	r = −.07	r = .004
	p = .14	p = .24	p = .17	p = .93
	N = 433	N = 431	N = 432	N = 434
Open.	r = .15	r = −.01	r = −.04	r = −.05
	p = .003	p = .83	p = .45	p = .29
	N = 431	N = 430	N = 430	N = 432
Demographics and Sleep
Age	r = .13	r = −.08	r = .04	r = −.12
	p = .007	p = .11	p = .45	p = .01
	N = 434	N = 432	N = 433	N = 435
Gender (Female)	r = .06	r = .08	r = .18	r = .06
	p = .19	p = .09	p<.001	p = .20
	N = 434	N = 432	N = 433	N = 435
Generation Status	r = .09	r = −.007	r = −.02	r = −.05
	p = .06	p = .89	p = .68	p = .32
	N = 433	N = 431	N = 432	N = 434
SES	r = .05	r = −.06	r = −.11	r = .008
	p = .32	p = .21	p = .02	p = .87
	N = 391	N = 389	N = 391	N = 435

Note. Con = Conscientiousness; Neur = Neuroticism; Agree = Agreeableness; Extra = Extraversion; Open = Openness; SES = Subjective Socioeconomic Status.