Psychology Study - How does personality and daily stress influence your cortisol levels?

You are invited to take part in an exciting psychology study, looking at the influence of personality and daily stress on cortisol (a hormone found in saliva).

Participants are asked to complete an online screening questionnaire:  This questionnaire should take roughly 20 minutes to complete. Eligible participants are invited to take part in the main study - participants in this stage with receive a £15 honorarium.

What does the study involve?

  • 8 saliva samples are collected per day, over 3 working days. Saliva samples are collected by chewing on a cotton swab.
  • On these days, participants will also complete a brief daily diary (both morning and evening entries).

Two weeks after the main stage, participants will be sent an online follow-up questionnaire. This questionnaire should take roughly 5 minutes to complete, after which participants will be entered into a prize draw to win £50 worth of shopping vouchers.

If you are interested in participating in this study, please go to for more information or to complete the online screening questionnaire. If you have any questions, please contact me (

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