Claire Greene Melissa Munoz Courtney Perley Emily Smith

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Presentation transcript:

Claire Greene Melissa Munoz Courtney Perley Emily Smith Sagarin, B. J., Vaughn Becker, D., Guadagno, R. E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of the infidelity. Evolution and Human Behavior, 24, 17-23. Claire Greene Melissa Munoz Courtney Perley Emily Smith

Evolutionary History of Jealousy Threats to reproductive fitness Males: no paternity assurance Females: male commitment to offspring (resources) Homosexual vs. heterosexual behavior of potential mates Rooted in evolutionary history Bisexual behavior Same-sex sexual interactions across different species Jealous is an advantageous emotion Protects reproductive success Sagarin, B.J., Vaughn Becker, D., Guadagno, R.E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of infidelity. Evolution and Human Behavior

Study 1 Condition 1: Opposite-sex infidelity vs. Condition 2: Same-sex infidelity Emotional or sexual infidelity more distressing? 10-point scale Results Opposite-sex condition Males – more distressed by sexual infidelity Females – more distressed by emotional infidelity Same-sex condition No significant sex difference Sagarin, B.J., Vaughn Becker, D., Guadagno, R.E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of infidelity. Evolution and Human Behavior

Sagarin, B. J. , Vaughn Becker, D. , Guadagno, R. E. , Nicastle, L. D Sagarin, B.J., Vaughn Becker, D., Guadagno, R.E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of infidelity. Evolution and Human Behavior

Study 2 Opposite-sex infidelity scenarios No significant differences found for same-sex infidelity scenarios Participants: perpetrator or victim of infidelity? Results Male victims: greater sexual infidelity distress Female perpetrators: greater sexual infidelity distress Sagarin, B.J., Vaughn Becker, D., Guadagno, R.E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of infidelity. Evolution and Human Behavior

Video: http://www.youtube.com/watch?v=ZyBgbpOeisw Sagarin, B.J., Vaughn Becker, D., Guadagno, R.E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of infidelity. Evolution and Human Behavior

Article Discussion Sex differences in jealousy are robust Infidelity is a moderator Levels of distress and jealousy differ depending on the circumstance When no threat to reproductive success exists, jealousy is eliminated Same-sex infidelity Conception is impossible Sagarin, B.J., Vaughn Becker, D., Guadagno, R.E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of infidelity. Evolution and Human Behavior

Critique and Questions Positive Robust sex difference shown by consistent results Same-sex infidelity results reinforce relationship between jealousy and reproductive success Sex differences regarding emotional and sexual infidelity Bisexual behavior Negative Sex difference regarding role as victim or perpetrator Male and female responses were inconsistent with results from Study 1 External validity Subjects were undergraduate students Sagarin, B.J., Vaughn Becker, D., Guadagno, R.E., Nicastle, L.D., Millevoi, A. (2003). Sex differences (and similarities) in jealousy: The moderating influence of infidelity experience and sexual orientation of infidelity. Evolution and Human Behavior