• Publications

    All articles are the sole copyright of the respective publishers. Materials are provided for educational purposes only. ​Downloading of materials constitutes an agreement that the materials are for personal use only.

    2021 | Forthcoming


    Cook, C. L., Krems, J. A., & Kenrick, D. T. (accepted for publication). Fundamental motives illuminate a broad range of individual and cultural variations in thought and behavior. Current Directions in Psychological Science.


    Krems, J. A., *Claessens, S., Fales, M. R., Campenni, M., Haselton, M. G., & Aktipis, A. (accepted for publication). An agent-based model of the female rivalry hypothesis for concealed ovulation in humans. Nature Human Behaviour. [Paper Link] [Data, Code, Model]


    Krems, J. A., *Ko, A., *Moon, J., & Varnum, M. E. W. (accepted for publication). Lay beliefs about gender and sexual behavior: First evidence for a pervasive, robust (but seemingly unfounded) stereotype. Psychological Science. [Pre-print] [Data + Code]


    Krems, J. A., & Neuberg, S. L. (accepted for publication). Updating long-held assumptions about fat stigma: For women, body shape plays a critical role. Social Psychological and Personal Science. [Pre-print] [Data + Code]


    Krems, J. A., Williams, K. E. G., Kenrick, D. T., & Aktipis, A. (in press). Friendship jealousy: One tool of friendship maintenance? Journal of Personality and Social Psychology. [Pre-registrations] [Data + Code]


    *Moon, J. W., Krems, J. A., & Cohen, A. B.. (accepted for publication). Is there anything good about atheists? Exploring positive and negative stereotypes of the religious and nonreligious. Social Psychological and Personal Science. [Pre-print] [Pre-registration, Data, + Code]


    Varnum, M. E. W., Krems, J. A., *Wormley, A., Morris, C. & Grossmann, I. (accepted for publication). Why are song lyrics becoming simpler? A time series analysis of lyrical complexity in six decades of American popular music. PLOS ONE. [Pre-print] [Data + Code]


    Fisher, M., & Krems, J. A. (forthcoming chapter). An evolutionary review of female intrasexual competition. In D. Buss (Ed.), The Handbook of Evolutionary Psychology. Wiley & Sons.



    *Ko, A., *Pick, C., *Kwon, J. Y., *Barlev, M., Krems, J. A., Varnum, M. E. W., …& Kenrick, D. T. (2020). Family matters: Rethinking the social psychology of human motivation. Perspectives on Psychological Science, 15(1), 173-201. [PDF] [OSF]

    Krems, J. A., & Conroy-Beam, D. (2020). First tests of Euclidean preference integration in friendship: Euclidean friend value and power of choice on the friend market. Evolution & Human Behavior, 41(3), 188-198. [PDF] | [Data + Code]


    Krems, J. A., *Rankin, A. M., & *Northover, S. B. (2020). Women’s strategic defenses against same-sex aggression: Evidence from sartorial choices. Social Psychological and Personality Science, 11(6), 770-781. [Link] | [Data, Code, + Materials]


    *Moon, J. W., Krems, J. A., & Cohen, A. B. (2020). Opposition to short-term mating predicts dislike of atheists. Personality and Individual Differences, 165(15), 110-136. [PDF] [Data + Code]


    Neuberg, S. L, Williams, K. E. G., Sng, O., *Pick, C. M., Neel, R., Krems, J. A., Pirlott, A. G. (2020). Toward capturing the functional and nuanced nature of social stereotypes: An affordance management approach. In B. Gawronski, (Ed.), Advances in Experimental Social Psychology, Vol. 62 (p. 245-304). [Link]


    Krems, J. A., *Bradshaw, H., & *Merrie, L. (2020). Intrasexual aggression. In J. Mogliski & T. Shackelford (Eds.), The Oxford Handbook of Evolutionary Psychology and Romantic Relationships. Oxford, UK: Oxford University Press.



    Krems, J. A., & Wilkes, J. (2019). Why are conversations limited to about four people? A theoretical exploration of the conversation size constraint. Evolution and Human Behavior, 40(3), 140 -147. [Link]


    *Moon, J. W., Krems, J. A., Cohen, A. B., & Kenrick, A. B. (2019). Is nothing sacred? Religion, sex, and reproductive strategies. Current Directions in Psychology, 28(4), 361-365. [PDF]



    Aktipis, A., Cronk, L.,† Alcock, A., Ayers, J., Balliet, D., Boddy, A. Curry, O. S., Krems, J. A.,Munoz, A., Sullivan, D., Sznycer, D., Wasielewski, H., Wilkinson, G., & Winfrey, P. (2018). Understanding cooperation through fitness interdependence. Nature Human Behavior, 2(7), 429-431. [PDF]

    † Trailing authors listed in alphabetical order


    *Moon, J. W., Krems, J. A., & Cohen, A. B. (2018). Religious targets are trusted because they are viewed as slow life-history strategists. Psychological Science, 29(6), 947-960. [PDF] [OSF]


    Kenrick, D. T., & Krems, J. A. (2018). Well-being, self-actualization, and fundamental motives: An evolutionary perspective. In E. Diener, S. Oishi, & L. Tay (Eds.), e-Handbook of subjective well-being. Online resource: Nobascholar.


    Vaillancourt, T., & Krems, J. A. (2018). The development of female aggression in evolutionary perspective. In S. M. Coyne & J. M. Ostrov (Eds.), The development of relational aggression. Oxford, UK: Oxford University Press.



    Krems, J. A., Kenrick, D. T., & Neel, R. (2017). Individual perceptions of self-actualization: What functional motives are linked to fulfilling one’s full potential? Personality and Social Psychology Bulletin, 43(9), 1337- 1352. [PDF] [Materials]

    Krems, J. A., & Varnum, M. E. W. (2017). More than just climate: The role of other ecological dimensions in explaining human aggression across societies [commentary]. Behavioral and Brain Sciences, 40, e89. [Data]



    Krems, J. A., Dunbar, R. I. M., & Neuberg, S. L. (2016). Something to talk about: Are conversation sizes constrained by mental modeling abilities? Evolution and Human Behavior, 36(6), 423-428. [Data]


    Krems, J. A., Neel, R., Neuberg, S. L., Puts, D. A., & Kenrick, D. T. (2016). Women selectively guard their (desirable) mates from ovulating women. Journal of Personality and Social Psychology, 101(4), 551-573.

    2015 | Prior


    David-Barrett, T., Rotkirch, A., Carney, J., Behncke Izquierdo, I., Krems, J. A., Townley, D., McDaniell, E., Byrne-Smith, A., & Dunbar, R. I. M. (2015). Women favor dyadic relationships, but men prefer clubs: Cross-cultural evidence from social networking. PLOS ONE, 10(3), e0118329.


    Krems, J. A., & Dunbar, R. I. M. (2013). Clique size and network characteristics in hyperlink cinema: Constraints of evolved psychology. Human Nature, 24(4), 414-429.


    Krems, J. A., Neuberg, S. L., Filip-Crawford, G., & Kenrick, D. T. (2015). Is she angry? (Sexually desirable) Women ‘see’ anger on female faces. Psychological Science, 26(11), 1655-1663.




    * denotes undergraduate, graduate, or postdoctoral researcher

  • Other Materials

    Paper Doll Stimulus Set

    In our work examining women's defenses against intrasexual aggression (Krems, Northover, & Rankin, 2020), we used part of a stimulus set depicting women--paper doll figures--in various outfits. These stimuli include women in dresses, jeans, skirts, and varying tops. All stimuli were pre-rated for clothing "modesty".


    The full stimulus set and related data can be found here.

    BODy Size and Shape (BODSS) figure set -- Neuberg & Krems (2016)


    A figure set that varies both body size and shape.


    We created a novel stimulus set containing, at present, over 50 figures: graphic line drawings of males and females at multiple life-stages (prepubescent, reproductive age, parenting age, post-reproductive). Each gender x life-stage set includes 7 figures varying in Body Mass Index (BMI): underweight, average-weight (really CDC's healthy-weight), overweight (x2) and obese (x3). Respectively, the two overweight and three obese figures were created to be the same exact weights and heights, but they vary in where the fat is distributed, allowing us to test hypotheses about the effects of body shape.


    The dynamic BODSS figure set can be found here.

  • Art on this website

    Firlei Baez

    Rachel Bone

    Marcel Dzama

    Walton Ford

    Neil Smith

    Ting Wang-Hedges