Publications

  • Goulden, E. A., Gust, C. J., Bryan, A. D., & Knight, E. L. (2025). Perceived Stress and Socioeconomic Status Differentially Modulate the Relationship Between Progesterone and Cortisol Reactivity to the Socially Evaluated Cold Pressor Task. ʲ⳦DzԱܰDZԻdzԴDZDz,in press. https://doi.org/10.1016/j.psyneuen.2025.107579
  • Dreber, A., Johanneson, M., Nave, G., Apicella, C., Geniole, S., Imai, T., Knight, E. L., Manfredi, D., Mehta, P. H., Proietti, V., Stanton, S., Zeltikova, A., Luberti, F., Ortiz, T., & Carré, J. (2025). No evidence of effects of testosterone on economic preferences: Results from a large (n =1,000) double-blind randomized controlled study.Proceedings of the National Academy of Sciences,in press.Pre-print available at .
  • McDonnell, S. C., Graham-Engeland, J. E., Sliwinski, M. J., Engeland, C. G., & Knight, E. L. (2024). Cognotoxemia: endotoxemia and gender predict changes in working memory performance in healthy adults. Frontiers in Neuroscience, 18, 1453325. https://doi.org/10.3389/fnins.2024.1453325
  • Finley, A. J., Angus, D. J., Knight, E., van Reekum, C. M., Lachman, M. E., Davidson, R. J., & Schaefer, S. M. (2024). Resting EEG periodic and aperiodic components predict cognitive decline over 10 years. Journal of Neuroscience. https://doi.org/10.1523/JNEUROSCI.1332-23.2024
    Pre-print available at https://doi.org/10.1101/2023.07.17.549371
  • Nelson, B. W., Harvie, H. M., Jain, B., Knight, E. L., Roos, L. E., & Giuliano, R. J. (2023). Smartphone photoplethysmography pulse rate covaries with stress and anxiety during a digital acute social stressor. Psychosomatic Medicine, 85(7), 577-584.
    Pre-print available at https://doi.org/10.31219/osf.io/5d8kcKnight, E. L., Graham-Engeland, J. E., Sliwinski, M. J., & Engeland, C. G. (2023). Greater Ecologically Assessed Positive Experiences Predict Heightened Sex Hormone Concentrations Across Two Weeks in Older Adults.The Journals of Gerontology: Series B,78(6), 1007-1017.
  • Knight, E. L., Engeland, C. G., Yocum, A. K., Abu-Mohammad, A., Bertram, H., Vest, E., McInnis, M. G., & Saunders, E. F. H. (2023). Heightened inflammation in bipolar disorder occurs independent of symptom severity and is explained by body mass index.Brain, Behavior, & Immunity - Health,29, 100613.
  • Nelson, B. W., Harvie, H. M. K., Jain, B., Knight, E. L., Roos, L. E., & Giuliano, R. J. (2023). Smartphone Photoplethysmography Pulse Rate Covaries with Stress and Anxiety During a Digital Acute Social Stressor.Psychosomatic Medicine.
  • Kramer, E. B., Knight, E. L., & Bryan, A. D. (2023). Cooking Interventions for Improving Diet Quality Among Black Americans: A Randomized Controlled Trial.Annals of Behavioral Medicine,57(4), 323-333.
  • Knight, E. L. (2022). Two Routes to Status, One Route to Health: Trait Dominance and Prestige Differentially Associate with Self-reported Stress and Health in Two US University Populations.Adaptive Human Behavior and Physiology,8(4), 461-488.https://doi.org/10.1007/s40750-022-00199-3 []
  • Knight, E. L., Morales, P. J., Christian, C. B., Harbaugh, W. T., Mehta, P. H., & Mayr, U. (2022) The causal effect of testosterone on men’s competitive behavior is moderated by basal cortisol and cues to an opponent’s status: Evidence for a context-dependent dual hormone hypothesis. Journal of Personality and Social Psychology. [; ]
  • Knight, E. L., Majd, M., Graham-Engeland, J. E., Smyth, J. M., Sliwinski, M. J., & Engeland, C. G. (2022). Depressive symptoms and other negative psychological states relate to ex vivo inflammatory responses differently for men and women: Cross-sectional and longitudinal evidence. Physiology & behavior, 113656. https://doi.org/10.1016/j.physbeh.2021.113656 [download]
  • Van Bogart, K., Engeland, C. G., Sliwinski, M. J., Harrington, K. D., Knight, E. L., Zhaoyang, R., Scott, S., & Graham-Engeland, J. E. (2022). The association between loneliness and inflammation: Findings from an older adult sample. Frontiers in Behavioral Neuroscience, 360.
  • Prasad*, S., Knight*, E. L., Sarkar, A., Welker, K. M., Lassetter, B., & Mehta, P. H. (2021). Testosterone fluctuations in response to a democratic election predict partisan attitudes toward the elected leader. Psychoneuroendocrinology, 133, 105396. https://doi.org/10.1016/j.psyneuen.2021.105396 [; ]
    *Shared first authorship.
  • Harvie, H., Jain, B., Nelson, B., Knight, E. L., Roos, L. E., & Giuliano, R. J. (2021). Induction of acute stress through an internet-delivered Trier Social Stress Test as assessed by photoplethysmography on a smartphone. Stress. https://doi.org/10.1080/10253890.2021.1995714 []
  • Knight, E. L., Jiang, Y., Rodriguez-Stanley, J., Almeida, D. M., Engeland, C. G., & Zilioli, S. (2021). Perceived stress is linked to heightened biomarkers of inflammation via diurnal cortisol in a national sample of adults. Brain, Behavior, and Immunity, 93, 206-213. https://doi.org/10.1016/j.bbi.2021.01.015. [download; ]
    Commentary on this manuscript: https://doi.org/10.1016/j.bbi.2021.03.027
  • Sundin, Z. W., Chopik, W. J., Welker, K. M., Ascigil, E., Brandes, C. M., Chin, K. A., Ketay, S., Knight, E. L., Kordsmeyer, T. L., McLarney-Vesotski, A. R., Prasad, S., Reese, Z. A., Roy, A. R. K., Sim, L., Stern, J., Carré, J. M., Edelstein, R. S., Mehta, P. H., Penke, L., Slatcher, R. B., & Tackett, J. L. (2021). Estimating the association between Big Five personality traits, testosterone, and cortisol. Adaptive Human Behavior and Physiology. https://doi.org/10.1007/s40750-020-00159-9 [; ]
  • Knight, E. L., Giuliano, R. J., Shank, S. W., Clarke, M. M., & Almeida, D. M. (2020). The parasympathetic and sympathetic nervous systems interactively predict cognitive change in midlife adults. Psychophysiology, 57(10), e13622. https://doi.org/10.1111/psyp.13622 [; ; ]
  • Knight*, E. L., McShane*, B. B., Kutlikova, H. H., Morales, P. J., Christian, C. B., Harbaugh, W. T., ... & Riečanský, I. (2020). Weak and variable effects of exogenous testosterone on Cognitive Reflection Test performance in three experiments: Commentary on Nave, Nadler, Zava, and Camerer (2017). Psychological Science, 31(7), 890-897.https://doi.org/10.1177%2F0956797619885607 [download; ]
    *Shared first author
  • Knight, E. L., Sarkar, A., Prasad, S., & Mehta, P. H. (2020). Beyond the challenge hypothesis: The emergence of the dual-hormone hypothesis and recommendations for future research. Hormones and Behavior, 104657.https://doi.org/10.1016/j.yhbeh.2019.104657 [download]
  • Knight, E. L., Majd, M., Graham-Engeland, J. E., Smyth, J. M., Sliwinski, M. J., & Engeland, C. G. (2020). Gender differences in the link between depressive symptoms and ex vivo inflammatory responses are associated with markers of endotoxemia. Brain, Behavior, and Immunity – Health, 2, 100013. https://doi.org/10.1016/j.bbih.2019.100013 [open-access]
  • Scheepers, D., & Knight, E. L. (2020). Neuroendocrine and cardiovascular responses to shifting status. Current Opinion in Psychology, 33, 115-119.https://doi.org/10.1016/j.copsyc.2019.07.035 []
  • Roos, L.E., Giuliano, R.J., Beauchamp, K.G., Berkman, E.T., Knight, E.L., & Fisher, P.A. (2020) Acute stress impairs children's sustained attention with increased vulnerability for children of mothers reporting higher parenting stress. Developmental Psychobiology, 62(4), 532-543. https://doi.org/10.1002/dev.21915
  • Prasad*, S., Knight*, E. L., & Mehta, P. H. (2019). Basal testosterone’s relationship with dictator game decision-making depends on cortisol reactivity to acute stress: A dual-hormone perspective on dominant status-relevant behavior during resource allocation. Psychoneuroendocrinology, 101, 150-159. []
    *Shared first authorship
  • Graham-Engeland, J. E., Sin, N. L., Smyth, J. M., Jones, D., Knight, E. L., Sliwinski, M., Almeida, D. M., Katz, M., Lipton, R., & Engeland, C. G. (2018). Aggregated momentary affect and inflammatory markers: Timing matters. Brain, Behavior, & Immunity, 74, 222-230. https://doi.org/10.1016/j.bbi.2018.09.011 []
  • Knight, E. L., Christian, C. B., Morales, P. J., Mayr, U., Harbaugh, W. T., & Mehta, P. H. (2017). Exogenous testosterone enhances cortisol and affective responses to social-evaluative stress in dominant men. Psychoneuroendocrinology, 85, 151-157.https://doi.org/10.1016/j.psyneuen.2017.08.014 [; ]
  • Roos, L. E., Knight, E. L., Beauchamp, K. G., Giuliano, R. J., Fisher, P. A., & Berkman, E. T. (2017). Conceptual precision is key in acute stress research: A commentary on Shields, Sazma, & Yonelinas, 2016. Neuroscience and Biobehavioral Reviews, 83, 140-144.https://doi.org/10.1016/j.neubiorev.2017.10.005 []
  • Knight, E. L. & Mehta, P. H. (2017). Hierarchy stability moderates the effect of status on stress and performance in humans. Proceedings of the National Academy of Sciences, 114(1), 78-83. https://doi.org/10.1073/pnas.1609811114 []
  • Roos, L. E., Knight, E. L., Beauchamp, K. G., Berkman, E. T., Faraday, K., Hyslop, K., & Fisher, P. A. (2017). Acute stress impairs inhibitory control based on individual differences in parasympathetic nervous system activity. Biological Psychology, 125, 58-63. https://doi.org/10.1016/j.biopsycho.2017.03.004 []
  • Mehta, P. H., †Snyder, N. A., Knight, E. L., & Lassetter, B. (2015). Close versus decisive victory moderates the effect of testosterone change on competitive decisions and task enjoyment. Adaptive Human Behavior and Physiology, 1(3), 291-311. https://doi.org/10.1007/s40750-014-0014-0
    †Mentored undergraduate student
  • Knight, E. L., & Mehta, P. H. (2014). Hormones and hierarchies. In J.T. Cheng, J.L. Tracy, & C. Anderson (Eds.), The Psychology of Social Status (pp. 269-301). Springer: New York. https://doi.org/10.1007/978-1-4939-0867-7_13

Submitted Manuscripts and Pre-Prints

  • Knight, Erik and Nave, Gideon and Apicella, Coren and Dreber, Anna and Geniole, Shawn and Johannesson, Magnus and Manfredi, Dylan and Mehta, Pranjal and Proietti, Valentina and Stanton, Steven and Luberti, Francesca and Ortiz, Triana and Carré, Justin. (2025). Does Testosterone Affect Cognitive Reflection? Evidence from a  Double-Blind, Randomized Controlled Study of 1,000 Participants. Pre-print available at

  • Barkman, H., Allan, A., Salsbury, M., Knight, E. L., Karns, C., Roos, L. E., … Giuliano, R. J. (2020). Growth Models of Positive Caregiving Behaviours and Concurrent Autonomic Activity in Caregivers and Children during a Challenging Puzzle Task: Replication and Extension. []

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