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Constraint is associated with earlier circadian phase and morningness: Confirmation of relationships between personality and circadian phase using a constant routine protocol

Bullock, B., Murray, G., Anderson, J.L., Cooper-O'Neill, T., Gooley, J.J., Cain, S.W. and Lockley, S.W. (2017) Constraint is associated with earlier circadian phase and morningness: Confirmation of relationships between personality and circadian phase using a constant routine protocol Personality and Individual Differences, 104. pp. 69-74.

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Abstract

Associations amongst personality, diurnal preference, and circadian phase were investigated using a constant routine laboratory protocol. One hundred and sixty-eight healthy participants aged 18�30 years (Women n = 68) completed either a 30- or 50-hour constant routine under dim-light conditions (< 3 lx), during which circadian phase was measured from core body temperature and melatonin. Prior to laboratory admission, self-report measures of personality and diurnal preference were also obtained. The personality trait of Constraint correlated positively with morning diurnal preference and earlier circadian phase, with circadian phase partially mediating the relationship between Constraint and diurnal preference. No other personality variables correlated with circadian phase. Sex was an important covariate in several of the relationships investigated due to lower levels of Constraint and later CBT phase amongst men and was thus controlled for in all relevant analyses. Findings from this highly controlled study are consistent with previous field research in suggesting that earlier circadian phase is associated with the personality trait of Constraint. © 2016

Item Type: Article
Authors :
NameEmailORCID
Bullock, B.
Murray, G.
Anderson, J.L.
Cooper-O'Neill, T.
Gooley, J.J.
Cain, S.W.
Lockley, S.W.s.lockley@surrey.ac.uk
Date : 2017
DOI : 10.1016/j.paid.2016.07.036
Uncontrolled Keywords : Chronotype, Circadian, Constant routine, Constraint, Core body temperature, Diurnal preference, DLMO, Melatonin, Phase
Depositing User : Clive Harris
Date Deposited : 17 Jun 2020 01:05
Last Modified : 17 Jun 2020 01:05
URI: http://epubs.surrey.ac.uk/id/eprint/857850

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