Abstract
An association between salivary cortisol levels and neuroticism has recently been reported, but it is unclear whether this association is unique to neuroticism or extends to other personality measures. The present study investigated early morning salivary cortisol levels in individuals selected for high and low extraversion. Thirty-three healthy volunteers were selected on the basis of their score on the extraversion sub-scale of the Eysenck Personality Questionnaire, and provided fasting saliva samples upon waking and at 15-min intervals for the next hour. Repeated measures ANOVA indicated a main effect of time ( p < 0.001). The main effect of group ( p = 0.196) and the group × time interaction ( p = 0.588) were non-significant. Our data support the dissociation of the neurobiological correlates of behavioral traits. Unlike in the case of neuroticism, extraversion appears not to be associated with variability in early morning salivary cortisol level.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.