Individual differences in the phase and amplitude of the human circadian temperature rhythm: with an emphasis on morningness–eveningness

@article{Baehr2000IndividualDI,
  title={Individual differences in the phase and amplitude of the human circadian temperature rhythm: with an emphasis on morningness–eveningness},
  author={Erin K. Baehr and William Revelle and Charmane I Eastman},
  journal={Journal of Sleep Research},
  year={2000},
  volume={9}
}
We studied the relationship between the phase and the amplitude of the circadian temperature rhythm using questionnaires that measure individual differences in personality variables, variables that relate to circadian rhythms, age and sex. The ambulatory core body temperature of 101 young men and 71 young women was recorded continuously over 6 days. The temperature minimum (Tmin) and amplitude (Tamp) were derived by fitting a complex cosine curve to each day’s data for each subject… 
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