The effects of hormones on human behaviour have been extensively studied, but little attention has been paid to the influence of ovarian hormones on risky driving. Twenty-five normally cycling women took part in three sessions, including an ovulatory phase estimation session and two experimental sessions: high vs low fertile phases. These two phases were monitored through a urine-based luteinizing hormone predictor test. In the two experimental sessions, participants were administered the Driving Behaviour Questionnaire and the Vienna Risk-Taking Test. Results showed that women are more risk-averse in their driving behaviour during their high-fertile phase. The influence of hormonal fluctuations on self-perception of risk attitude when driving was non-significant. Findings are discussed from an evolutionary perspective. Copyright © 2016 John Wiley & Sons, Ltd.
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