Publications and In Press Papers

Recent/In Press

Piazza, J., & Gregson, R. (2024). Why we keep eating animals: Perspective from social psychology. Forthcoming in Hand of Ethics and Social Psychology (Ed. Simon Laham). 

Gregson, R., Piazza, J., & Shaw, H. (2024). Is being anti-vegan a distinct dietarian identity? An invstigation with omnivores, vegans, and self-identified "anti-vegans". Appetite, 192, 107126. Link to paper

Henseler Kozachenko, H., & Piazza, J. (2023). How bad is it to eat an intelligent chicken? Children's judgments of eating animals are less 'self-serving' than adults.  Social Development. Link

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 

Piazza, J., Simpson, V., & McGuire, L. (2023). Why children moralise harm to animals but not meat. Trends in Cognitive Sciences, 27(8), 685-688Link

Piazza, J., & Sousa, P. (2023). Minimal criteria for an impurity domain of morality. Trends in Cognitive Sciences, 27(6), 514-516. Link to paper

By Topic

Moral Regard for Animals

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]

The Meat-Motivated Mind

Gregson, R., Piazza, J., & Shaw, H. (2024). Is being anti-vegan a distinct dietarian identity? An invstigation with omnivores, vegans, and self-identified "anti-vegans". Appetite, 192, 107126. Link to paper

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

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), 730-741Link  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 

Harm, Injustice, and Moral Judgment

Piazza, J., & Sousa, P. (2023). Minimal criteria for an impurity domain of morality. Trends in Cognitive Sciences. 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]

Religion and Morality

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

Moral Character

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]

Moral Emotions

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]

Reputation Management 

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