Social dominance theory
Social dominance theory (SDT) is a social psychological theory of intergroup relations that examines the caste-like features of group-based social hierarchies, seeking to explain how they remain stable and perpetuate themselves. According to the theory, group-based inequalities are maintained through three primary mechanisms: institutional discrimination, aggregated individual discrimination, and behavioral asymmetry. The theory proposes that widely shared cultural ideologies (“legitimizing myths”) provide the moral and intellectual justification for these intergroup behaviors, serving to disguise privilege as “normal”. For data collection and validation of predictions, the social dominance orientation (SDO) scale was composed to measure acceptance of and desire for group-based social hierarchy using two factors: 1) support for group-based dominance and 2) generalized opposition to equality, regardless of the in-group’s position in the power structure. Though the scale is used in other social and political psychology studies with disparate goals including those exploring the causes of the orientation, social dominance theory’s perspective is that explaining the orientation cannot explain group based dominance due to its role as just one of many factors that act as both partial effect as well as partial cause of group based dominance.
Proposed initially in 1992 by social psychology researchers, Jim Sidanius, Erik Devereux and Felicia Pratto, the theory begins with the observation that human social groups consist of distinctly different group-based social hierarchies in societies capable of producing economic surpluses. These hierarchies have a trimorphic (3-form) structure, a description which was simplified from the 4 part biosocial structure identified by van den Berghe (1978). The hierarchies are based on (1) age (i.e., adults have more power and higher status than children), (2) gender (i.e., men have more power and higher status than women), and (3) arbitrary-set, which are group-based hierarchies that are culturally defined and do not necessarily exist in all societies. Such arbitrariness can select on ethnicity (e.g., in the US, Bosnia, Asia, Rwanda etc.), religion (Sunni versus Shia Islam), nationality, or any other socially constructed category. Social hierarchy is seen not just as a universal human feature- SDT argues there is substantial evidence it is shared, including the theorized trimorphic structure- both among all hominoids as well as other primates.
A primary assumption in social dominance theory is that racism, sexism, nationalism and classism are all manifestations of the same human disposition to form group based social hierarchies.  The social tiers described by multiple theories of stratification, become organized into hierarchies due to forces that SDT views are best explained in evolutionary psychology as offering high survival value. Human social hierarchies are seen as consisting of a hegemonic group at the top and negative reference groups at the bottom. More powerful social roles are increasingly likely to be occupied by a hegemonic group member (for example, an older white male). Males are more dominant than females, and they possess more political power and occupy higher status positions illustrating the iron law of androcracy. As a role gets more powerful, Putnam’s law of increasing disproportion comes into play and the probability the role is occupied by a hegemonic group member increases.
Social dominance theory adds new theoretical elements attempting a comprehensive synthesis of explanations of the three mechanisms of group hierarchy oppression which are regulated by legitimizing myths:
- Aggregated individual discrimination (ordinary discrimination)
- Aggregated institutional discrimination (by governmental and business institutions)
- Behavioural asymmetry
- Deference- systematic outgroup favouritism (minorities favour members of dominant group)
- asymmetric ingroup bias (as status increases, in-group favoritism decreases)
- self-handicapping (self-categorization as an inferior becomes a Self-fulfilling prophecy)
- ideological asymmetry (as status increases, so beliefs legitimizing and/or enhancing the current social hierarchy)
Although the nature of these hierarchical differences and inequality differs across cultures and societies, significant commonalities have been verified empirically using the social dominance orientation (SDO) scale. In multiple studies across countries, the SDO scale has been shown to correlate robustly with a variety of kinds of group prejudices (including sexism, sexual orientation prejudice, racism, nationalism) and with hierarchy - enhancing policies.
Legitimizing myths theory
Social dominance theory holds that decisions and behaviours of individuals and groups can be better understood by examining the “myths” that guide and motivate them. Legitimising myths are consensually held values, attitudes, beliefs, stereotypes, conspiracy theories and cultural ideologies. Examples include the doctrine of inalienable rights of man, divine right of kings, the protestant work ethic, and national myths. In current society, such legitimizing myths or narratives are communicated through social media, television shows, films etc. and are investigated using a variety of methods including content analysis, semiotics, discourse analysis and psychoanalysis.  The granularity of narrative extends from such broad ideologies at the highest level to middle level personal myths (positive thinking of oneself as a successful smart dominant, or submissive inferior) reaching the lowest level of behavioral scripts or schemas for particular dominant-submissive social situations.  Categories of myth include:
- paternalistic myths (the dominant hegemony serves society, looks after incapable minorities)
- reciprocal myths (suggestions that dominants and outgroups are actually equal)
- sacred myths (karma or divine right of kings as a religion-approved mandate to dominate others) 
For regulation of the three mechanisms of group hierarchy oppression, there are two functional types of legitimizing myths: (1) hierarchy-enhancing and (2) hierarchy-attenuating myths. Hierarchy-enhancing ideologies (e.g., racism or meritocracy) contribute to greater levels of group-based inequality. Pratto (1994) presents meritocracy as an example of a legitimizing myth, showing how the myth of meritocracy produces only an illusion of fairness. Hierarchy-attenuating ideologies such as doctrines of protected rights, universalism, Christian Brotherhood/ egalitarianism, feminism and multiculturalism contribute to greater levels of group-based equality. People endorse these different forms of ideologies based in part on their psychological orientation to accept or reject unequal group relations as measured by the social dominance orientation (“SDO”) scale. People who score higher on the SDO scale tend to endorse hierarchy-enhancing ideologies, and people who are lower on SDO tend to endorse hierarchy-attenuating ideologies. Lastly, SDT proposes that the relative counterbalancing of hierarchy-enhancing and -attenuating social forces stabilizes group-based inequality.
Origins: Expanded from the elite theory concept of a legitimizing cognitive framework, legitimizing myths theory emerged from ideas developed since the late nineteenth century, including Durkeim’s notion of collective representations (Durkeim, 1893), Gramsci’s idea of ideological hegemony (Gramsci, 1971), and Moscovici’s notion of social representations (Moscovici, 1984). Sidanius and Pratto’s social power description of group dominance and shared representations in terms of myth also drew on anthropological and linguistic studies of social problems in the late twentieth century such as Johnson, (1994), Sanday, (1981), Teun van Dijk, (1989).
Interactions with Authoritarian personality theory
Authoritarian personality theory has an empirical scale known as the RWA measure which strongly predicts a substantially similar set of group level sociopolitical behaviours such as prejudice and ethnocentrism that the Social dominance scale predicts, despite the scales being largely independent of each other. Research by Bob Altemeyer and others has shown the two scales have different patterns of correlation with characteristics at the individual level and other social phenomena. For example, high SDO individuals are not particularly religious, but high RWAs usually are; high SDOs do not claim to be benevolent but high RWAs usually do. Altemeyer theorizes that both are authoritarian personality measures, with SDO measuring dominant authorian personalities, and RWA measuring the submissive type. Other researchers believe that the debate between intergroup relation theories has moved past which theory can subsume all others or better explain all forms discrimination. Instead, the debate has moved to pluralist explanation, where researchers need to determine which theory or combination of theories is appropriate under which conditions.
The relationship between the two theories has been explored by Altemeyer and other researchers such as John Duckitt who have exploited the greater coverage possible by employing RWA and SDO scales in tandem. Duckitt proposes a model in which RWA and SDO influences ingroup and outgroup attitudes in two different dimensions. On this view RWA measures the threats to norms and values, so high RWA reliably predicts negative views towards drug dealers, rock stars and so on whereas high SDO scores do not. The model theorizes high SDO individuals are reacting to pecking order competition with groups seen as socially subordinate (unemployment beneficiaries, housewives, handicapped), so view these particular groups negatively whereas RWA does not correlate negative views of them. Duckitt’s research shows that RWA and SDO measures can become more correlated with age, and suggests the hypothesis that the perspectives were acquired independently during socialization and over time become more consistent as they interact with each other. Unaffectionate socialization is hypothesised to cause tough-minded attitudes of high SDO individuals. This competitive response dimension seeing the world as a dog-eat-dog place is in Duckitt's view backed my multiple studies Duckitt predicts that the high correlation between the views of the world as dangerous and competitive emerge from parenting styles tending to covary along the dimensions of punitiveness and lack of affection.
The model also suggests that these views mutually reinforce each other. Duckitt further examines the complexities of the interaction between RWA, SDO and a variety of specific ideological/prejudicial beliefs and behaviour. For instance:
- SDO beliefs are activated by competition and intergroup inequalities in status and power
- RWA is a stronger predictor of prejudice when the outgroup is threatening
- When group status is unstable, SDO is associated with higher ingroup bias than when group status is stable
- Outgroup liking is best predicted by similarity to the ingroup, while outgroup respect is predicted by status and technological advancement
Duckitt also argues that this model may explain anti-authoritarian-libertarian and egalitarian-altruistic ideologies.
Other researchers view RWA and SDO as distinct in important respects. People high on the RWA scale are easily frightened and value security, but are not necessarily callous cruel and confident as are those high on SDO. Altemeyer has conducted multiple studies demonstrating that the SDO measure is far more predictive of racist orientation than the RWA measure and that while results from the two scales correlate closely for some countries (Belgium and Germany), his research as well as that of McFarland and Adelson (1996), show they correlate very little for others (USA, Canada).
Gender and dominance
Consistent with the observation that in patriarchal societies, males tend to be more dominant than females, SDT predicts that everything else being equal, males will tend to have a higher SDO score. This “invariance hypothesis” predicts that males will tend to function as hierarchy enforcers, that is, they will carry out acts of discrimination such as the systematic terror by police officers and the extreme example of death squads and concentration camps. This is supported a demonstrated correlation between SDO scores and preference for occupations such as criminal prosecutors and police officers as opposed to hierarchy attenuating professions (social workers, human rights advocates or health care workers). SDT also predicts that males who carry out violent acts have been predisposed out of a conditioning called prepared learning.
Elite theory influences- Marx and others
SDT was influenced by the elite theories of Marx, Gaetano Mosca, Robert Michels, and Vilfredo Pareto who argue that societies are ruled by a small elite who rationalize their power through some system of justifying narratives and ideologies. Marx described the oppressive hierarchy of hegemonic group(s) dominating negative reference groups, in his examples the bourgeoisie (owning class) dominate the proletariat (working class) by controlling capital (the means of production), not paying workers enough, and so on. However Marx thought that the working class would eventually comprehend the solution to this oppression and destroy the dominants- the bourgeoisie- in a proletarian revolution. Engles views ideology and social discourse is employed to keep dominants and subgroups in line, referring to this as "false consciousness" whose political rationalist cure results when masses can evaluate the facts of their situation. The SDT view is that social constructions employing ideology and social narratives may be used as effective justifications regardless whether they are epistemologically true or false, or whether they legitimize inequality or equality. From the Marxian economic determinist perspective, race, ethnic and gender conflict are sociological epiphenomena derivable from the primary economic class conflict. Unlike Marxian sociologists, SDT along with Mosca, Michels, and Pareto together reject reduction solely to economic causes, and are skeptical of the hoped for class revolution. Pareto’s analysis was that “victory” in the class struggle will merely usher in a new set of socially dominant elites. Departing from elite theory’s near exclusive focus on social structures manipulated by rational actors, SDT follows Pareto’s new direction towards examining collective psychological forces, asserting that human behavior is not primarily driven by either reason or logic.
John C. Turner and Katherine J. Reynolds (2003) from the Australian National University published in the British Journal of Social Psychology a commentary on SDT which outlined six fundamental criticisms based on internal inconsistencies. These six criticisms include; arguing against the evolutionary basis of the social dominance drive, questioning the origins of social conflict (hardwired versus social structure), questioning the meaning and role of the SDO construct, a falsification of ‘behavioral asymmetry’ (BA), the idea of an alternative to understanding attitudes to power including ideological asymmetry and collective self-interest and a reductionism and philosophical idealism of SDT. The commentary argues that Social identity theory (SIT) has better explanatory power than SDT, and makes the case that SDT has been falsified by two studies: Schmitt, Branscombe and Kappen (2003) and Wilson and Lui (2003).
Wilson and Liu suggest intergroup attitudes simply follow social structure and cultural beliefs, theories and ideologies developed to make sense of group's place in the social structure and the nature of their relationships with other groups. From this view, social dominance orientation is a product rather than a cause of social life. They call into question the invariance hypothesis citing their own test relating "strength of gender identification" as a moderator of "gender‐social dominance orientation relationship" reporting that group identification was associated with increased dominance orientation in males but decreased dominance orientation in females. Pratto, Sidanius and Levin respond by denying that any claim was made that SDO measures are independent of social identity context, and that methodologically, “it would obviously make no sense to compare the SDO levels of female members of death squads to those of male social workers, or, less dramatically, to compare the SDO levels of men identifying with female gender roles to those of women identifying with male gender roles.” The hypothesized evolutionary predispositions of one gender towards SDO was not intended by the SDT authors to imply that nothing can be done about gender inequality or domination patterns- quite the opposite, because the theory provides unique approaches for attenuating those predispositions and their social manifestations.
- Authoritarian personality
- Collective narcissism
- Common ingroup identity
- Cultural hegemony
- Elite theory
- Habitus (sociology)
- Political psychology
- Power (social and political)
- Social constructionism
- Social psychology
- System justification theory
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There are myths of origin, myths of European and African culture, and myth embodied in popular stereotypes.
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