Nc. Schommer et al., No evidence for a close relationship between personality traits and circadian cortisol rhythm or a single cortisol stress response, PSYCHOL REP, 84(3), 1999, pp. 840-842
Personality traits measured with the Eysenck Personality Questionnaire-Revi
sed did not show associations with basal or stimulated concentrations of co
rtisol in a sample of 81 subjects. Cortisol responses to a single exposure
to psychosocial stress as well as circadian salivary-free cortisol patterns
did not distinguish between subjects with high or low scores on Extraversi
on, Neuroticism, or Psychoticism, respectively.