Gregson, R., & Piazza, J. (2025). Navigating family dynamics in the transition to a plant-forward diet: The role of social support. The Journal of Social Psychology. Link
Finnerty, S., Piazza, J., & Levine, M. (in press). Climate futures: Scientists' discourses on collapse versus transformation. British Journal of Social Psychology.
Piazza, J. (in press). Folk judgments of animal moral standing. Forthcoming in Handbook of Social Judgments (Ed. Justin Landy).
Piazza, J., & Gregson, R. (2025). Why we keep eating animals: Perspectives from social psychology. Forthcoming in Handbook of Ethics and Social Psychology (Ed. Simon Laham). [Email me for an author copy.]
Henseler Kozachenko, H., & Piazza, J. (2024). How bad is it to eat an intelligent chicken? Children's judgments of eating animals are less 'self-serving' than adults. Social Development, 33(1), e12709. Link
Henseler Kozachenko, H., & Piazza, J. (2024). How bad is it to eat an intelligent chicken? Children's judgments of eating animals are less 'self-serving' than adults. Social Development, 33(1), e12709. Link
Piazza, J., Simpson, V., & McGuire, L. (2023). Why children moralise harm to animals but not meat. Trends in Cognitive Sciences, 27(8), 685-688. Link
Henseler Kozachenko, H., & Piazza, J. (2021). How children and adults value different animal lives. Journal of Experimental Child Psychology, 210, 105204. Find it here
Possidónio, C., Piazza, J., Graça, J., & Prada, M. (2021). From pets to pests: Testing the scope of the 'pets as ambassadors' hypothesis. Anthrozoös, 34(5), 707-722. Link [Coverage by Faunalytics]
Piazza, J. (2020). Why people love animals yet continue to eat them. In K. Dhont and G. Hodson, Why people love and exploit animals: Bridging insights from academia and advocacy (pp. 229-244). Abingdon, UK: Routledge.
Piazza, J., Cooper, L., & Slater-Johnson, S. (2020). Rationalizing the many uses of animals: Application of the 4N justifications beyond meat. Human-Animal Interaction Bulletin, 8(1), 1-22. {link to article}
Possidónio, C., Graça, J., Piazza, J., & Prada, M. (2019). Animal Images Database: Validation of 120 images for human-animal studies. Animals, 9(475), 1-20.
Loughnan, S., & Piazza, J. (2018). Thinking morally about animals. In J. Graham & K. Gray (Eds.), The Atlas of Moral Psychology (pp. 165-174). Guilford Press. [Link]
Piazza, J., Landy, J. F., & Goodwin, G. P. (2014). Cruel nature: Harmfulness as an important, overlooked dimension in judgments of moral standing. Cognition, 131, 108-124. [Link]
Gregson, R., Piazza, J., & Shaw, H. (2024). Is being anti-vegan a distinct dietarian identity? An investigation with omnivores, vegans, and self-identified "anti-vegans". Appetite, 192, 107126. Link to paper
Crawshaw, C., & Piazza, J. (2023). Livestock farmers' attitudes towards alternative proteins. Sustainability, 15(12), 9253. Link
Gregson, R., & Piazza, J. (2023). Relational climate and openness to plant-forward diets among cohabitating couples. Appetite, 187, 106617. Link
Crawshaw, C., & Piazza, J. (2022). How conflicted are farmers about meat? Livestock farmers' attachments to their animals and attitudes about meat. Psychology of Human-Animal Intergroup Relations, 1. Link to paper [Coverage by Faunalytics]
Gregson, R., Piazza, J., & Boyd, R. L. (2022). 'Against the cult of veganism': Unpacking the social psychology and ideology of anti-vegans. Appetite, 178, 106143. Link [Precis written for The Vegan Society and Psychology Today]
Leach, S., Piazza, J., Loughnan, S., et al. (2022). Unpalatable truths: Commitment to eating meat is associated with strategic ignorance of food-animal minds. Appetite, 171, 105935. Link to paper
Possidónio, C., Piazza, J., Graça, J., & Prada, M. (2022). An appetite for meat? Disentangling the influence of animal resemblance and familiarity. Appetite, 170, 105875. Link to paper
Piazza, J., Gregson, R., Kordoni, A., Pfeiler, T. M., Ruby, M. B., Ellis, D. A., Sahin, E., & Reith, M. (2022). Monitoring a meat-free pledge with smartphones: An experimental study. Appetite, 168, 105726. Link to paper [Layperson summary by Faunalytics: here ]
Dhont, K., Piazza, J., & Hodson, G. (2021). The role of meat appetite in willfully disregarding factory farming as a pandemic catalyst risk. Appetite, 164, 105279. [Special Issue] Link Layperson summary by Faunalytics: here
Hopwood, C. J., Piazza, J., Chen, S., & Bleidorn, W. (2021). Development and validation of the motivations to eat meat inventory. Appetite, 163, 105210. Link
Piazza, J., Hodson, G., & Oakley, A. (2021). Butchers' and deli workers' psychological adaptation to meat. Emotion, 21(4), 730-741. Link Layperson summary by Faunalytics: here.
Piazza, J. (2021). A vegan future? The four Ns of meat justification. The Psychologist. Link
Possidónio, C., Prada, M., Graça, J., & Piazza, J. (2021). Consumer perceptions of conventional and alternative protein sources: A mixed-methods approach with meal and product framing. Appetite, 156, 104860. Link
Piazza, J., McLatchie, N., & Olesen, C. (2018). Are baby animals less appetising? Tenderness towards baby animals and appetite for meat. Anthrozoös, 31, 319-335. [pdf] {weblink}
Piazza, J., & Loughnan, S. (2016). When meat gets personal, animals' minds matter less: Motivated use of intelligence information in judgments of moral standing. Social Psychological and Personality Science, 7(8), 867-874. [pdf] doi:10.1177/1948550616660159
Piazza, J., Ruby, M. B., Loughnan, S., Luong, M., Kulik, J., Watkins, H. M., & Seigerman, M. (2015). Rationalizing meat consumption: The 4Ns. Appetite, 91, 114-128. [pdf] online article
Finnerty, S., Piazza, J., & Levine, M. (in press). Climate futures: Scientists' discourses on collapse versus transformation. British Journal of Social Psychology.
Finnerty, S., Piazza, J., & Levine, M. (2024). Between two worlds: The scientist's dilemma in climate activism. NPJ Climate Action, 3(77). Link
Finnerty, S., Piazza, J., & Levine, M. (2024). Scientists' identities shape engagement with environmental activism . Communications Earth & Environment, 5(240). Link
Piazza, J., & Sousa, P. (2023). Minimal criteria for an impurity domain of morality. Trends in Cognitive Sciences, 27(6), 514-516. Link to paper
Sousa, P., Allard, A., Piazza, J., & Goodwin, G. P. (2021). Folk moral objectivism: The case of harmful actions. Frontiers in Psychology. Link
Piazza, J., Sousa, P., Rottman, J., & Syropoulos, S. (2019). Which appraisals are foundational to moral judgment? Harm, injustice, and beyond. Social Psychological and Personality Science, 10(7), 903-913. {OnlineFirst}
Chakroff, A., Russell, P. S., Piazza, J., & Young, L. (2017). From impure to harmful: Asymmetric expectations about immoral agents. Journal of Experimental Social Psychology, 69, 201-209.
Khamitov, M., Rotman, J., & Piazza, J. (2016). Perceiving the agency of harmful agents: A test of dehumanization versus moral typecasting accounts. Cognition, 146, 33-47. [weblink]{SSRN download}
Piazza, J. & Sousa, P. (2016). When injustice is at stake, moral judgements are not parochial. [Comment on Fessler et al., 2015] Proceedings from the Royal Society of London B, 283, 20152037. [pdf] {Lancaster Blog post I wrote about this article}
Sousa, P., & Piazza, J. (2014). Harmful transgressions qua moral transgressions: A deflationary view. Thinking & Reasoning, 20(1), 99-128. [pdf]
Piazza, J., Sousa, P., & Holbrook, C. (2013). Authority dependence and judgments of utilitarian harm. Cognition, 128, 261-270. [pdf]
Sousa, P., Holbrook, C., & Piazza, J. (2009). The morality of harm. Cognition, 113, 80-92. [pdf]
Simpson, A., Piazza, J., & Rios, K. (2016). Belief in divine moral authority: Validation of a shortened scale with implications for social attitudes and moral cognition. Personality and Individual Differences, 94, 256-265. [pdf]
Shariff, A., Piazza, J., & Kramer, S. (2014). Morality and the religious mind: Why theists and non-theists differ. Trends in Cognitive Sciences, 18(9), 439-441. [Equal contribution by authors] [pdf]
Piazza, J., & Sousa, P. (2014). Religiosity, political orientation, and consequentialist moral thinking. Social Psychological and Personality Science, 5(3), 334-342. {doi:10.1177/1948550613492826} (Here's a link to the descriptives for the consequentialist thinking style scale)
Piazza, J., & Landy, J. F. (2013). "Lean not on your own understanding": Belief that morality is founded on divine authority and non-utilitarian moral thinking. Judgment and Decision Making, 8(6), 639-661. [pdf]
Piazza, J. (2012). "If you love me keep my commandments": Religiosity increases preference for rule-based moral arguments. International Journal for the Psychology of Religion, 22, 285-302. [pdf]
Piazza, J., Bering, J. M., & Ingram, G. P. D. (2011). "Princess Alice is watching you": Children's belief in an invisible person inhibits cheating. Journal of Experimental Child Psychology, 109, 311-320. [pdf] See article coverage in NewScientist
Landy, J. F., Piazza, J., & Goodwin, G. P. (2016). When it's bad to be friendly and smart: The desirability of sociability and competence depends on morality. Personality and Social Psychology Bulletin, 42(9), 1272-1290. [Online First link]
Goodwin, G., Piazza, J., & Rozin, P. (2015). Understanding the importance and perceived structure of moral character. In C. Miller, R. M. Furr, A. Knobel, & W. Fleeson (Eds.), Character: New Directions from Philosophy, Psychology, and Theology (pp. 100-126). Oxford University Press. [pdf]{The Character Project: Link to Table of Contents}
Goodwin, G., Piazza, J., & Rozin, P. (2014). Moral character information predominates in person perception and evaluation. Journal of Personality and Social Psychology, 106, 148-168.
Piazza, J., Goodwin, G., Rozin, P., & Royzman, E. (2014). When a virtue is not a virtue: Conditional virtues in moral evaluation. Social Cognition, 32(6), 528-558. [pdf]
Piazza, J., & Landy, J. F. (2020). Folk beliefs about the relationships anger and disgust have with moral disapproval. Cognition and Emotion, 34(2), 229-241.
Landy, J. F., & Piazza, J. (2019). Re-evaluating moral disgust: Sensitivity to many affective states predicts extremity in many evaluative judgments. Social Psychological and Personality Science, 10(2), 211-219. {weblink}
Piazza, J., Landy, J. F., Chakroff, A., Young, L., & Wasserman, E. (2018). What disgust does and does not do for moral cognition. In N. Strohminger and V. Kumar, The Moral Psychology of Disgust (pp. 53-81). New York: Rowman & Littlefield.
McLatchie, N., & Piazza, J. (2017). Moral pride: Challenges and benefits of experiencing and expressing pride in one's moral achievements. In A. Carter and E. Gordon (Eds.), The Moral Psychology of Pride (pp. 143-167). Rowman and Littlefield International. [Link]
Russell, P. S., & Piazza, J. (2015). Consenting to counter-normative sexual acts: Differential effects of consent on anger and disgust as a function of transgressor or consenter. Cognition & Emotion, 29, 634-653. [Equal contribution by authors] [pdf] [Supplementary materials]
Holbrook, C., Piazza, J., & Fessler, D. M. (2014). Further challenges to the "Authentic" / "Hubristic" model of pride: Conceptual clarifications and new evidence. Emotion, 14, 38-42. [pdf] [A reply to Tracy & Robins commentary]
Holbrook, C., Piazza, J., & Fessler, D. M. (2014). Conceptual and empirical challenges to the "Authentic" versus "Hubristic" model of pride. [Target article] Emotion, 14, 17-32. [pdf] {doi:10.1037/a0031711}
Piazza, J., Russell, P. S., & Sousa, P. (2013). Moral emotions and the envisioning of mitigating circumstances for wrongdoing. Cognition & Emotion, 27, 707-722. [pdf]
Russell, P. S., Piazza, J., & Giner-Sorolla, R. (2013). CAD revisited: Effects of the word "moral" on the moral relevance of disgust (and other emotions). Social Psychological and Personality Science, 4, 63-69. [pdf]
Giner-Sorolla, R., Piazza, J., & Espinosa, P. (2011). What are the TOSCA Guilt and Shame Scales really measuring: Affect or action? Personality and Individual Differences, 51, 445-450. [pdf]
Piazza, J., & Ingram, G. P. D. (2015). Evolutionary cyberpsychology 2.0: Revisiting some old predictions and posting some new ones in the age of Facebook. In V. Zeigler-Hill, L. L. M. Welling, & T. K. Shackelford (Eds.), Evolutionary Perspectives on Social Psychology (pp. 159-174). New York, NY: Springer Publishing. {Now available!}
Piazza, J., & Bering, J. M. (2010). The coevolution of secrecy and stigmatization: Evidence from the content of distressing secrets. Human Nature, 21, 290-308. [pdf]
Ingram, G. P. D., Piazza, J. R., & Bering, J. M. (2009). The adaptive problem of absent third-party punishment. In H. Høgh-Olesen, J. Tønnesvang, & P. Bertelsen (Eds.), Human Characteristics: Evolutionary perspectives on human mind and kind (pp. 205-229). Newcastle, UK: Cambridge Scholars Publishing.
Piazza, J., & Bering, J. M. (2009). Evolutionary cyber-psychology: Applying an evolutionary framework to internet behavior. Computers in Human Behavior, 25, 1258-1269. [pdf]
Piazza, J., & Bering, J. M. (2008). Concerns about reputation via gossip promote generous allocations in an economic game. Evolution and Human Behavior, 29, 172-178. [pdf]
Piazza, J., & Bering, J. M. (2008). The effects of perceived anonymity on altruistic punishment. Evolutionary Psychology, 6, 487-501. [pdf]
Contact me
j [dot] piazza [at] lancaster [dot] ac [dot] uk