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Sex Differences in Jealousy: The Influence of Infidelity Experience and Sexual Orientation

This study explores the differences and similarities in jealousy based on sex and sexual orientation, with a focus on the moderating influence of infidelity experience. Results show that emotional infidelity is more distressing for females, while males are more distressed by sexual infidelity. Same-sex infidelity does not elicit significant sex differences in jealousy.

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Sex Differences in Jealousy: The Influence of Infidelity Experience and Sexual Orientation

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  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

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