Is weakened circadian rhythmicity a characteristic of neuroticism?
G Murray, NB Allen, J Trinder, H Burgess
JOURNAL OF AFFECTIVE DISORDERS | ELSEVIER SCIENCE BV | Published : 2002
The aim of this study was to undertake a preliminary investigation of the novel hypothesis that weakened circadian rhythmicity is an aspect of the psychobiology of neuroticism (N). Two groups of subjects [young healthy females categorised as High N (N=8) or Low N (N=6)] were compared in terms of a classical circadian variable (the unmasked rhythm in core body temperature), and a validated psychological variable (diurnal rhythm in Positive Affect), under two experimental protocols (constant routine and ambulatory). As predicted, model-fitting analyses found that the High N group was characterised by attenuated circadian amplitudes in unmasked body temperature under both protocols. Also as hyp..View full abstract