World Library  
Flag as Inappropriate
Email this Article




In this famous image from the Warsaw Ghetto Uprising, Josef Blösche (far right) and other Nazi soldiers gather up innocent civilians, including children, for persecution.

Dehumanization or dehumanisation describes the denial of "humanness" to other people. It is theorized to take on two forms: animalistic dehumanization, which is employed on a largely intergroup basis, and mechanistic dehumanization, which is employed on a largely interpersonal basis.[1] Dehumanization can occur discursively (e.g., idiomatic language that likens certain human beings to non-human animals, verbal abuse, erasing one's voice from discourse), symbolically (e.g., imagery), or physically (e.g., chattel slavery, physical abuse, refusing eye contact). Dehumanization often ignores the target's individuality (i.e., the creative and interesting aspects of their personality) and prevents one from showing compassion towards stigmatized groups.

Dehumanization may be carried out by a social psychological literature.[2][3] It is conceptually related to infrahumanization,[4] delegitimization,[5] moral exclusion,[6] and objectification.[7] Dehumanization occurs across several domains; is facilitated by status, power, and social connection; and results in behaviors like exclusion, violence, and support for violence against others.


  • Humanness 1
  • Animalistic versus mechanistic 2
  • Related psychological processes 3
  • Facilitating factors 4
  • Race and ethnicity 5
  • Objectification 6
  • The role of nations and governments 7
  • The role of terrorists and rebels 8
  • In science, medicine, and technology 9
  • Democracy and "dignity of man" 10
  • Other topics 11
  • See also 12
  • References 13
  • External links 14


In Herbert Kelman's work on dehumanization, humanness has two features: "identity" (i.e., a perception of the person "as an individual, independent and distinguishable from others, capable of making choices") and "community" (i.e., a perception of the person as "part of an interconnected network of individuals who care for each other"). When a target's agency and community embeddedness are denied, they no longer elicit compassion or other moral responses, and may suffer violence as a result.[8]

Animalistic versus mechanistic

In Nick Haslam's review of dehumanization, he differentiates between uniquely human (UH) characteristics, which distinguish humans from other animals, and human nature (HN), characteristics that are typical of or central to human beings. His model suggests that different types of dehumanization arise from the denial of one sense of humanness or the other. Language, higher order cognition, refined emotions, civility, and morality are uniquely human characteristics (i.e., traits humans have that non-human animals do not). Cognitive flexibility, emotionality, vital agency, and warmth are central to human nature. Characteristics of human nature are perceived to be widely shared among groups (i.e., every human has these traits), while uniquely human characteristics (e.g., civility, morality) are thought to vary between groups.[1]

According to Haslam, the animalistic form of dehumanization occurs when uniquely human characteristics (e.g., refinement, moral sensibility) are denied to an outgroup. People that suffer animalistic dehumanization are seen as amoral, unintelligent, and lacking self-control, and they are likened to animals. This has happened with Black Americans in the United States, Jews during The Holocaust, and the Tutsi ethnic group during the Rwandan Genocide. While usually employed on an intergroup basis, animalistic dehumanization can occur on an interpersonal basis as well.

The mechanistic form occurs when features of human nature (e.g., cognitive flexibility, warmth, agency) are denied to targets. Targets of mechanistic dehumanization are seen as cold, rigid, interchangeable, lacking agency, and likened to machines or objects. Mechanistic dehumanization is usually employed on an interpersonal basis (e.g., when a person is seen as a means to another's end).[1]

Related psychological processes

Several lines of psychological research relate to the concept of dehumanization. Infrahumanization suggests that individuals think of and treat outgroup members as "less human" and more like animals;[4] while Irenaus Eibl-Eibesfeld uses the term pseudo-speciation to imply that the dehumanized person or persons are being regarded as not members of the human species.[9] Specifically, individuals associate secondary emotions (which are seen as uniquely human) more with the ingroup than with the outgroup. Primary emotions (those that are experienced by all sentient beings, both humans and other animals) and are found to be more associated with the outgroup.[4] Dehumanization is intrinsically connected with violence(cite?). For the most part, one cannot do serious injury to another without first dehumanizing him or her in one’s mind(cite?) . Military training is, among other things, a systematic desensitization and dehumanization of the other, and servicemen and women find it psychologically necessary to refer to the enemy contemptuously with animal or other non-human names. Lt. Col. Dave Grossman has shown that without such desensitization it would be difficult, if not impossible for men to kill, even in combat, even under threat to their own lives.[10]

Delegitimization is the "categorization of groups into extreme negative social categories which are excluded from human groups that are considered as acting within the limits of acceptable norms and/or values."[5]

Moral exclusion occurs when outgroups are subject to a different set of moral values, rules, and fairness than are used in social relations with ingroup members.[6] When individuals dehumanize others, they no longer experience distress when they treat them poorly. Moral exclusion is used to explain extreme behaviors like genocide, harsh immigration policies, and eugenics, but can also happen on a more regular, everyday discriminatory level. In laboratory studies, people who are portrayed as lacking human qualities have been found to be treated in a particularly harsh and violent manner.[11][12][13]

Martha Nussbaum (1999) identified seven components of objectification: "instrumentality", "ownership", "denial of autonomy", "inertness", "fungibility", "violability", and "denial of subjectivity".[7]

Facilitating factors

While social distance from the outgroup target is a necessary condition for dehumanization, some research suggests that it is not sufficient. Psychological research has identified high status, power, and social connection as additional factors that influence whether dehumanization will occur. If being an outgroup member was all that was required to be dehumanized, dehumanization would be far more prevalent. However, only members of high status groups associate humanity more with ingroup than the outgroup. Members of low status groups exhibit no differences in associations with humanity. Having high status makes one more likely to dehumanize others.[14] Low status groups are more associated with human nature traits (warmth, emotionality) than uniquely human traits, implying that they are closer to animals than humans because these traits are typical of humans but can be seen in other species.[15] In addition, another line of work found that individuals in a position of power were more likely to objectify their subordinates, treating them as a means to one's own end rather than focusing on their essentially human qualities.[16] Finally, social connection, thinking about a close other or being in the actual presence of a close other, enables dehumanization by reducing attribution of human mental states, increasing support for treating targets like animals, and increasing willingness to endorse harsh interrogation tactics.[17] This is surprising because social connection has documented benefits for personal health and well-being but appears to impair intergroup relations.

Neuroimaging studies have discovered that the medial prefrontal cortex—a brain region distinctively involved in attributing mental states to others—shows diminished activation to extremely dehumanized targets (i.e., those rated, according to the stereotype content model, as low-warmth and low-competence, such as drug addicts or homeless people).[18][19]

Race and ethnicity

Dehumanization often occurs as a result of conflict in an intergroup context. Ethnic and racial others are often represented as animals in popular culture and scholarship. There is evidence that this representation persists in the American context with Black Americans implicitly associated with apes. To the extent that an individual has this dehumanizing implicit association, they are more likely to support violence against Black Americans (e.g., jury decisions to execute defendants).[20] Historically, dehumanization is frequently connected to genocidal conflicts in that ideologies before and during the conflict link victims to rodents/vermin.[1] Immigrants are also dehumanized in this manner.[21]


Fredrickson and Roberts argued that the sexual objectification of women extends beyond pornography (which emphasizes women's bodies over their uniquely human mental and emotional characteristics) to society generally. There is a normative emphasis on female appearance that causes women to take a third-person perspective on their bodies.[22] The psychological distance women may feel from their bodies might cause them to dehumanize themselves. Some research has indicated that women and men exhibit a "sexual body part recognition bias", in which women's sexual body parts are better recognized when presented in isolation than in the context of their entire bodies, whereas men's sexual body parts are better recognized in the context of their entire bodies than in isolation.[23] Men who dehumanize women as either animals or objects are more liable to rape and sexually harass women and display more negative attitudes toward female rape victims.[24]

The role of nations and governments

Sociologists and historians often view dehumanization as central to war. Governments sometimes represent "enemy" civilians or soldiers as less than human so that voters will be more likely to support a war they may otherwise consider mass murder. Dictatorships use the same process to prevent opposition by citizens. Such efforts often depend on preexisting racist, sectarian, or otherwise biased beliefs, which governments play upon through various types of media, presenting "enemies" as barbaric, as undeserving of rights, and as threats to the nation. Alternatively, states sometimes present an enemy government or way of life as barbaric and its citizens as childlike and incapable of managing their own affairs. Such arguments have been used as a pretext for colonialism.

lynching (especially in the United States) are often thought of as the result of popular bigotry and government apathy.

Anthropologists Ashley Montagu and Floyd Matson famously wrote that dehumanization might well be considered "the fifth horseman of the apocalypse" because of the inestimable damage it has dealt to society.[25] When people become things, the logic follows, they become dispensable, and any atrocity can be justified.

Dehumanization can be seen outside of overtly violent conflicts, as in political debates where opponents are presented as collectively stupid or inherently evil. Such "good-versus-evil" claims help end substantive debate (see also thought-terminating cliché).

The role of terrorists and rebels

Non-state actors—terrorists in particular—have also resorted to dehumanization to further their cause and assuage pangs of guilt. The 1960s terrorist group Weather Underground had advocated violence against any authority figure, and used the "police are pigs" idea to convince members that they were not harming human beings, but simply killing wild animals. Likewise, rhetoric statements such as "terrorists are just scum", is an act of dehumanization.[26]

In science, medicine, and technology

A cold water immersion experiment at Dachau concentration camp presided over by Professor Ernst Holzlöhner (left) and Dr. Sigmund Rascher (right). The subject is wearing an experimental Luftwaffe garment

Relatively recent history has seen the relationship between dehumanization and science result in unethical scientific research. The Tuskegee syphilis experiment and the Nazi human experimentation on Jews are two such examples. In the former, Black Americans with syphilis were recruited to participate in a study about the course of the disease. Even when treatment and a cure were eventually developed, they were withheld from the Black participants so that researchers could continue their study. Similarly, Nazi scientists conducted horrific experiments on Jewish people during the Holocaust. Dehumanization of these groups justified the research. When this research came to light, efforts were made to protect participants of future research, and currently institutional review boards exist to safeguard individuals from being taken advantage of by scientists.

In a medical context, the passage of time has served to make some dehumanizing practices more acceptable, not less. While dissections of human cadavers was seen as dehumanizing in the Dark Ages (see History of anatomy), the value of dissections as a training aid is such that they are now more widely accepted. Dehumanization has been associated with modern medicine generally, and specifically, has been suggested as a coping mechanism for doctors who work with patients at the end of life.[1][27] Researchers have identified six potential causes of dehumanization in medicine: deindivudating practices, impaired patient agency, dissimilarity (causes which do not facilitate the delivery of medical treatment), mechanization, empathy reduction, and moral disengagement (which could be argued, do facilitate the delivery of medical treatment).[28]

From the patient point of view, in some states in America, controversial legislation requires that a woman view the ultrasound image of her fetus before being able to have an abortion. Critics of the law argue that simply seeing an image of the fetus humanizes it, and biases women against abortion.[29] Similarly, a recent study showed that subtle humanization of medical patients appears to improve care for these patients. Radiologists evaluating X-rays reported more details to patients and expressed more empathy when a photo of the patient's face accompanied the X-rays.[30] It appears that inclusion of the photos counteracts the dehumanization of the medical process.

Dehumanization has applications outside traditional social contexts. Anthropomorphism (i.e., perceiving in nonhuman entities mental and physical capacities that reflect humans) is the inverse of dehumanization, which occurs when characteristics that apply to humans are denied to other humans.[31] Waytz, Epley, and Cacioppo suggest that the inverse of the factors that facilitate dehumanization (e.g., high status, power, and social connection) should facilitate anthropomorphism. That is, a low status, socially disconnected person without power should be more likely to attribute human qualities to pets or electronics than a high-status, high-power, socially connected person.

Researchers have found that engaging in violent video game play diminishes perceptions of both one's own humanity and the humanity of the players who are targets of the violence in the games.[32] While the players are dehumanized, the video game characters that play them are likely anthropomorphized.

Democracy and "dignity of man"

German philosopher and anthropologist of law Axel Montenbruck wrote that dehumanization is inextricably linked with both the "techniques of neutralization" (David Matza/Gresham Sykes) and to the obedience aspects of the Milgram experiment and in a wider sense with Philip Zimbardo's Stanford prison experiment.

Montenbruck continues that—in light of our common Western civilization—dehumanization is based on political Humanism, in terms of both human rights and Western democracy. Each of them are grounded in the "dignity of man" aspect. Therefore, its "negation" might be seen as dehumanization in our common Western sense. Furthermore, in light democracy, criminal law might be reduced to the simple formula: violating a person means an act of dehumanization by taking "freedom, unfairly and inhumanely". The reaction of a civilized Western society ought to be "taking freedom as well, but fair and humane".[33]

Other topics

The propaganda model of Edward S. Herman and Noam Chomsky argues that corporate media are able to carry out large-scale, successful dehumanization campaigns when they promote the goals (profit-making) that the corporations are contractually obliged to maximise.[34][35] In both democracies and dictatorships, state media are also capable of carrying out dehumanization campaigns, to the extent with which the population is unable to counteract the dehumanizing memes.[34]

See also


  1. ^ a b c d e Haslam, Nick (2006). "Dehumanization: An Integrative Review" (PDF). Personality and Social Psychology Review 10 (3): 252–264.  
  2. ^ Moller, A. C., & Deci, E. L. (2010). "Interpersonal control, dehumanization, and violence: A self-determination theory perspective". Group Processes & Intergroup Relations, 13, 41-53. (open access)
  3. ^ Haslam, Nick; Kashima, Yoshihisa; Loughnan, Stephen; Shi, Junqi; Suitner, Caterina (2008). "Subhuman, Inhuman, and Superhuman: Contrasting Humans with Nonhumans in Three Cultures". Social Cognition 26 (2): 248–258.  
  4. ^ a b c Leyens, Jacques-Philippe; Paladino, Paola M.; Rodriguez-Torres, Ramon; Vaes, Jeroen; Demoulin, Stephanie; Rodriguez-Perez, Armando; Gaunt, Ruth (2000). "The Emotional Side of Prejudice: The Attribution of Secondary Emotions to Ingroups and Outgroups" (PDF). Personality and Social Psychology Review 4 (2): 186–197.  
  5. ^ a b Bar-Tal, D. (1989). "Delegitimization: The extreme case of stereotyping and prejudice". In D. Bar-Tal, C. Graumann, A. Kruglanski, & W. Stroebe (Eds.), Stereotyping and prejudice: Changing conceptions. New York, NY: Springer.
  6. ^ a b Opotow, Susan (1990). "Moral Exclusion and Injustice: An Introduction". Journal of Social Issues 46 (1): 1–20.  
  7. ^ a b Nussbaum, M. C. (1999). Sex and Social Justice. Oxford, England: Oxford University Press. ISBN 0195112105
  8. ^ Kelman, H. C. (1976). "Violence without restraint: Reflections on the dehumanization of victims and victimizers". pp. 282-314 in G. M. Kren & L. H. Rappoport (Eds.), Varieties of Psychohistory. New York: Springer. ISBN 0826119409
  9. ^ Irenaus Eibl-Eibisfeldt, The Biology of Peace and War: Men, Animals and Aggression (Aug 31, 1979)
  10. ^ Grossman, Dave Lt. Col. On Killing: The Psychological Cost of Learning to Kill in War and Society. (Jun 22, 2009);
  11. ^ Bandura, Albert (2002). "Selective Moral Disengagement in the Exercise of Moral Agency" (PDF). Journal of Moral Education 31 (2): 101–119.  
  12. ^ Bandura, Albert; Barbaranelli, Claudio; Caprara, Gian Vittorio; Pastorelli, Concetta (1996). "Mechanisms of moral disengagement in the exercise of moral agency." (PDF). Journal of Personality and Social Psychology 71 (2): 364–374.  
  13. ^ Bandura, Albert; Underwood, Bill; Fromson, Michael E (1975). "Disinhibition of aggression through diffusion of responsibility and dehumanization of victims" (PDF). Journal of Research in Personality 9 (4): 253–269.  
  14. ^ Capozza, D.; Andrighetto, L.; Di Bernardo, G. A.; Falvo, R. (2011). "Does status affect intergroup perceptions of humanity?". Group Processes & Intergroup Relations 15 (3): 363–377.  
  15. ^ Loughnan, S.; Haslam, N.; Kashima, Y. (2009). "Understanding the Relationship between Attribute-Based and Metaphor-Based Dehumanization". Group Processes & Intergroup Relations 12 (6): 747–762.  
  16. ^ Gruenfeld, Deborah H.; Inesi, M. Ena; Magee, Joe C.; Galinsky, Adam D. (2008). "Power and the objectification of social targets.". Journal of Personality and Social Psychology 95 (1): 111–127.  
  17. ^ Waytz, Adam; Epley, Nicholas (2012). "Social connection enables dehumanization". Journal of Experimental Social Psychology 48 (1): 70–76.  
  18. ^ Harris, L. T.; Fiske, S. T. (2006). "Dehumanizing the Lowest of the Low: Neuroimaging Responses to Extreme Out-Groups" (PDF). Psychological Science 17 (10): 847–853.  
  19. ^ Harris, L. T. and Fiske, S. T. (2007). "Social groups that elicit disgust are differentially processed in mPFC".  
  20. ^ Goff, Phillip Atiba; Eberhardt, Jennifer L.; Williams, Melissa J.; Jackson, Matthew Christian (2008). "Not yet human: Implicit knowledge, historical dehumanization, and contemporary consequences.". Journal of Personality and Social Psychology 94 (2): 292–306.  
  21. ^ O'Brien, Gerald (2003). "Indigestible Food, Conquering Hordes, and Waste Materials: Metaphors of Immigrants and the Early Immigration Restriction Debate in the United States" (PDF). Metaphor and Symbol 18 (1): 33–47.  
  22. ^ Fredrickson, Barbara L.; Roberts, Tomi-Ann (1997). "OBJECTIFICATION THEORY.". Psychology of Women Quarterly 21 (2): 173–206.  
  23. ^ Gervais, Sarah J.; Vescio, Theresa K.; Förster, Jens; Maass, Anne; Suitner, Caterina (2012). "Seeing women as objects: The sexual body part recognition bias". European Journal of Social Psychology 42 (6): 743–753.  
  24. ^ Rudman, L. A.; Mescher, K. (2012). "Of Animals and Objects: Men's Implicit Dehumanization of Women and Likelihood of Sexual Aggression" (PDF). Personality and Social Psychology Bulletin 38 (6): 734–746.  
  25. ^ Montagu, Ashley and Matson, Floyd W. (1983) The dehumanization of man, McGraw-Hill, Preface, p. xi, "For that reason this sickness of the soul might well be called the 'Fifth Horseman of the Apocalypse.' Its more conventional name, of course, is dehumanization."
  26. ^ Graham, Stephen (2006). "Cities and the 'War on Terror'". International Journal of Urban and Regional Research 30 (2): 255–276.  
  27. ^ Schulman-Green, Dena (2003). "Coping mechanisms of physicians who routinely work with dying patients". OMEGA: the Journal of Death and Dying 47 (3): 253–264.  
  28. ^ Haque, O. S.; Waytz, A. (2012). "Dehumanization in Medicine: Causes, Solutions, and Functions". Perspectives on Psychological Science 7 (2): 176–186.  
  29. ^ Sanger, C (2008). "Seeing and believing: Mandatory ultrasound and the path to a protected choice".  
  30. ^ Turner, Y., & Hadas-Halpern, I. (2008, December 3). "The effects of including a patient's photograph to the radiographic examination". Paper presented at Radiological Society of North America, Chicago, IL.
  31. ^ Waytz, A.; Epley, N.; Cacioppo, J. T. (2010). "Social Cognition Unbound: Insights Into Anthropomorphism and Dehumanization" (PDF). Current Directions in Psychological Science 19 (1): 58–62.  
  32. ^ Bastian, Brock; Jetten, Jolanda; Radke, Helena R.M. (2012). "Cyber-dehumanization: Violent video game play diminishes our humanity". Journal of Experimental Social Psychology 48 (2): 486–491.  
  33. ^ Montenbruck, Axel (2010) Western Anthropology: Democracy and Dehumanization. 2nd edition,, Universitätsbibliothek der Freien Universität Berlin, pp. 60-66,74-75
  34. ^ a b Herman, Edward S. and Noam Chomsky. (1988). Manufacturing Consent: the Political Economy of the Mass Media. New York: Pantheon. Page xli
  35. ^ Thomas Ferguson. (1987). Golden Rule: The Investment Theory of Party Competition and the Logic of Money-Driven Politics

External links

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.