All Stories

  1. Friendship promiscuity as indexed by preferences for wide networks and intimacy with many friends: structure and validity of a new construct

    Article • October 2025, Center for Open Science

    Jessica Ayers

  2. Friendship promiscuity as indexed by preferences for wide networks and intimacy with many friends: structure and validity of a new construct

    Article • September 2025, Center for Open Science

    Jessica Ayers

  3. Pregnancy complications during the COVID-19 pandemic: A case for understanding genetic conflict in pregnancy

    Article • August 2025, Center for Open Science

    Jessica Ayers

  4. Sources of Fitness Interdependence Associated with Shared Fate and Cooperation in a Small-scale Horticultural Society

    Article • March 2025, Center for Open Science

    Jessica Ayers

  5. Pregnancy complications during the COVID-19 pandemic: A case for understanding genetic conflict in pregnancy

    Article • November 2024, Center for Open Science

    Jessica Ayers

  6. Shared fate was associated with sustained cooperation during the COVID-19 pandemic

    Article • PLOS One, September 2024, PLOS

    Jessica Ayers

  7. How do you build the perfect friend? Evidence from two forced-choice decision-making experiments

    Article • Journal of Social and Personal Relationships, April 2024, SAGE Publications

    Jessica Ayers

  8. How Genetic-Conflict Theory Can Inform Studies of Human Nature

    Article • Perspectives on Psychological Science, February 2024, SAGE Publications

    Jessica Ayers

  9. Cooperation Science: Mapping the Landscape of a New Discipline

    Article • January 2024, Center for Open Science

    Jessica Ayers

  10. How do you build the perfect friend? Evidence from two forced-choice decision-making experiments

    Article • August 2023, Center for Open Science

    Jessica Ayers

  11. Unpredictable Needs are Associated with Lower Expectations of Repayment

    Article • March 2023, Center for Open Science

    Jessica Ayers

  12. Wishing our friends would take it seriously: What predicts concern about friends’ behavior during the COVID-19 pandemic?

    Article • February 2023, Center for Open Science

    Jessica Ayers

  13. Descriptive, not injunctive, social norms caused increases in mask wearing during the COVID-19 pandemic

    Article • December 2022, Center for Open Science

    Jessica Ayers

  14. How genetic conflict theory can inform studies of human nature

    Article • September 2022, Center for Open Science

    Jessica Ayers

  15. Fitness interdependence as indexed by shared fate: Factor structure and validity of a new measure.

    Article • Evolutionary Behavioral Sciences, June 2022, American Psychological Association (APA)

    Jessica Ayers

  16. What is Reciprocity? A Review and Expert-based Classification of Cooperative Transfers

    Article • February 2022, Center for Open Science

    Jessica Ayers

  17. Mother-in-Law Daughter-in-Law Conflict: an Evolutionary Perspective and Report of Empirical Data from the USA

    Article • Evolutionary Psychological Science, January 2022, Springer Science + Business Media

    Jessica Ayers

  18. Agreeableness and neuroticism predict being more concerned about COVID-19 and bothered by friends’ risky behavior

    Article • December 2021, Center for Open Science

    Jessica Ayers

  19. Do rules of friendship tell us what traits we value in friends?

    Article • December 2021, Center for Open Science

    Jessica Ayers

  20. Women behave more competitively when presented with competitive scenarios

    Article • Evolutionary Behavioral Sciences, November 2021, American Psychological Association (APA)

    Jessica Ayers

  21. Mask wearing behavior across routine and leisure activities during COVID-19

    Article • April 2021, Center for Open Science

    Jessica Ayers

  22. Competitive scenarios increase competition in women: A meta-analysis

    Article • March 2021, Center for Open Science

    Jessica Ayers

  23. What predicts attitudes about mask wearing?

    Article • March 2021, Center for Open Science

    Jessica Ayers

  24. Coordinated condemnation in women's intrasexual competition

    Article • March 2021, Center for Open Science

    Jessica Ayers

  25. The changing landscape of friendship in the pandemic: Younger people and people with higher subjective socioeconomic status experience more negative effects of the pandemic on their friendships

    Article • January 2021, Center for Open Science

    Jessica Ayers

  26. The role of Perceived Risk, Stress, and Future Orientation on Mask Wearing During COVID-19

    Article • December 2020, Center for Open Science

    Jessica Ayers

  27. Mother-in-law daughter-in-law conflict: An evolutionary perspective, ethnographic review, and report of empirical data from the United States

    Article • September 2020, Center for Open Science

    Jessica Ayers

  28. How did the COVID-19 pandemic affect cooperation and interdependence?

    Article • May 2020, Center for Open Science

    Jessica Ayers

  29. Fitness interdependence as indexed by shared fate: Factor structure and validity of a new measure

    Article • May 2020, Center for Open Science

    Jessica Ayers

  30. Is facial width-to-height ratio reliably associated with social inferences? A large cross-national examination

    Article • April 2020, Center for Open Science

    Jessica Ayers

  31. Do Smartphones Create a Coordination Problem for Face‐to‐Face Interaction? Leveraging Game Theory to Understand and Solve the Smartphone Dilemma

    Article • BioEssays, April 2020, Wiley

    Jessica Ayers

  32. Need-Based Transfer Systems are More Vulnerable to Cheating When Resources are Hidden

    Article • December 2019, Center for Open Science

    Jessica Ayers