No Evidence for a Close Relationship between Personality Traits and Circadian Cortisol Rhythm or a Single Cortisol Stress Response

Abstract

Personality traits measured with the Eysenck Personality Questionnaire-Revised did not show associations with basal or stimulated concentrations of cortisol 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 Extraversion, Neuroticism, or Psychoticism, respectively.