Justice sensitivity is undergirded by separate heritable motivations to be morally principled and opportunistic

Injustice typically involves some people benefitting at the expense of others. An opportunist might then be selectively motivated to amend only the injustice that is harmful to them, while someone more principled would respond consistently regardless of whether they stand to gain or lose. Here, we disentangle such principled and opportunistic motives towards injustice. With a sample of 312 monozygotic- and 298 dizygotic twin pairs (N = 1220), we measured people’s propensity to perceive injustice as victims, observers, beneficiaries, and perpetrators of injustice, using the Justice Sensitivity scale. With a biometric approach to factor analysis, that provides increased stringency in inferring latent psychological traits, we find evidence for two substantially heritable factors explaining correlations between Justice Sensitivity facets. We interpret these factors as principled justice sensitivity (h2 = 0.45) leading to increased sensitivity to injustices of all categories, and opportunistic justice sensitivity (h2 = 0.69) associated with increased sensitivity to being a victim and a decreased propensity to see oneself as a perpetrator. These novel latent constructs share genetic substrate with psychological characteristics that sustain broad coordination strategies that capture the dynamic tension between honest cooperation versus dominance and defection, namely altruism, interpersonal trust, agreeableness, Social Dominance Orientation and opposition to immigration and foreign aid

The genetic underpinnings of right-wing authoritarianism and social dominance orientation explain political attitudes beyond Big Five personality

Objective: Political attitudes are predicted by the key ideological variables of right-wing authoritarianism (RWA) and social dominance orientation (SDO), as well as some of the Big Five personality traits. Past research indicates that personality and ideological traits are correlated for genetic reasons. A question that has yet to be tested concerns whether the genetic variation underlying the ideological traits of RWA and SDO has distinct contributions to political attitudes, or if genetic variation in political attitudes is subsumed under the genetic variation underlying standard Big Five personality traits. Method: We use data from a sample of 1987 Norwegian twins to assess the genetic and environmental relationships between the Big Five personality traits, RWA, SDO, and their separate contributions to political policy attitudes. Results: RWA and SDO exhibit very high genetic correlation (r = 0.78) with each other and some genetic overlap with the personality traits of openness and agreeableness. Importantly, they share a larger genetic substrate with political attitudes (e.g., deporting an ethnic minority) than do Big Five personality traits, a relationship that persists even when controlling for the genetic foundations underlying personality traits. Conclusion: Our results suggest that the genetic foundations of ideological traits and political attitudes are largely non-overlapping with the genetic foundations of Big Five personality traits

Correlations between social dominance orientation and political attitudes reflect common genetic underpinnings

A foundational question in the social sciences concerns the interplay of underlying causes in the formation of people's political beliefs and prejudices. What role, if any, do genes, environmental influences, or personality dispositions play? Social dominance orientation (SDO), an influential index of people's general attitudes toward intergroup hierarchy, correlates robustly with political beliefs. SDO consists of the subdimensions SDO-dominance (SDO-D), which is the desire people have for some groups to be actively oppressed by others, and SDO-egalitarianism (SDO-E), a preference for intergroup inequality. Using a twin design (n = 1,987), we investigate whether the desire for intergroup dominance and inequality makes up a genetically grounded behavioral syndrome. Specifically, we investigate the heritability of SDO, in addition to whether it genetically correlates with support for political policies concerning the distribution of power and resources to different social groups. In addition to moderate heritability estimates for SDO-D and SDO-E (37% and 24%, respectively), we find that the genetic correlation between these subdimensions and political attitudes was overall high (mean genetic correlation 0.51), while the environmental correlation was very low (mean environmental correlation 0.08). This suggests that the relationship between political attitudes and SDO-D and SDO-E is grounded in common genetics, such that the desire for (versus opposition to) intergroup inequality and support for political attitudes that serve to enhance (versus attenuate) societal disparities form convergent strategies for navigating group-based dominance hierarchies

Time Pressure as an Amplifier of Information Preferences in Risky Decision Making

An investigation of the effect of time pressure on information utilization in risky decision making. Predictions from two competing hypotheses were compared, through analyses of information preferences in a risky choice task using eye tracking and behavioral data. Conclusions from prior studies propose that time pressure causes an increased reliance on information about negative outcomes in risky decisions. The present study suggests that the effect of time pressure rather interacts with the pre-existing information preferences of the decision maker, by increasing reliance on the information the decision maker considers most central

Estimating heritability of psychological traits using the classical twin design; a gentle introduction to concepts and assumptions

Heritability is a concept that is often misunderstood. The term is used somewhat differently by researchers from how it is used in common parlance. This paper is a gentle introduction to the scientific concept of heritability, and to how it can be estimated for psychological traits in humans through analyses of data from monozygotic and dizygotic pairs of twins. The paper then explores some of the assumptions of the classical twin design, and presents calculations of the consequences of breaking these assumptions. Lastly, the paper introduces multivariate twin modeling, with a focus on how heritability of traits can be impacted by causal effects from other traits, and how twin designs can be informative when making causal inferences

Motivated moral judgments about freedom of speech are constrained by a need to appear consistent

Speech is a critical means of negotiating political, adaptive interests in human society. Prior research on motivated political cognition has found that support for freedom of speech depends on whether one agrees with its ideological content. However, it remains unclear if people (A) openly hold that some speech should be more free than other speech; or (B) want to appear as if speech content does not affect their judgments. Here, we find support for (B) over (A), using social dominance orientation and political alignment to predict support for speech. Study 1 demonstrates that if people have previously judged restrictions of speech which they oppose, they are less harsh in condemning restrictions of speech which they support, and vice versa. Study 2 finds that when participants judge two versions of the same scenario, with only the ideological direction of speech being reversed, their answers are strongly affected by the ordering of conditions: While the first judgment is made in accordance with one’s political attitudes, the second opposing judgment is made so as to remain consistent with the first. Study 3 is a preregistered replication and elaboration on Study 2. Study 4 suggests that this effort to appear consistent functions to oblige the opposition to (also) protect one's own speech: We find that support for equal protection of all speech is stronger if a member of the opposition proposes it, rather than a member of one's own political coalition. These results are consistent with notions of an evolutionary arms race of social manipulation, and suggest that although people selectively endorse universal moral principles depending on their own political agenda, they conceal their bias from others and, perhaps, themselves

The Norwegian version of the five factor narcissism inventory for vulnerable narcissism and the grandiose narcissism subscale of indifference: Psychometric properties of the long‐ and short‐form versions

In recent years, narcissism has been reconceptualized as a multi‐dimensional feature of human psychology. The Five Factor Narcissism Inventory (FFNI ) has been proposed as a measure for two distinguishable dimensions of narcissism: Vulnerable and Grandiose (Glover, Miller, Lynam, Crego & Widiger, 2012). To investigate the role that some of these factors may have in moderating responses to cues of social exclusion, implemented in a connected laboratory experiment, we translated the subscales for Vulnerable Narcissism and the Grandiose Narcissism subscale of Indifference from English into Norwegian and included them in an online survey that was used to recruit and pre‐screen participants for the laboratory experiment. In this paper, we test the psychometric properties of these translated self‐report measures, in what amounted to be a diverse sample of the Norwegian population. We perform reliability tests and confirmatory factor analysis on the long‐ and short‐form versions of FFNI Vulnerable Narcissism and the Grandiose Narcissism subscale of Indifference. We further test the criterion validity of these measures by way of correlational analyses with other theoretically relevant measures. We conclude that the Norwegian short‐form versions of FFNI Vulnerable Narcissism and Grandiose Narcissism subscale of Indifference exhibit good psychometric properties in our data and propose that the translated scales can now be used to explore these constructs in clinical and non‐clinical populations in Norway, and can be easily adapted for use in other Scandinavian countries

Causality and confounding between Right Wing Authoritarianism, education, and Socio-Economic Status; a twin study

While it is well-established that education and Right Wing Authoritarianism (RWA) are quite strongly negatively correlated, it is still unclear why this is the case. There could be causal effects between these variables, in one or both directions, which can be either direct or mediated. And there could also be confounding third variables influencing their association. Using a sample of 320 monozygotic- and 312 dizygotic twin pairs, we were able to control for confounding influences from both genes and the family-environment, increasing our ability to infer causal effects. Furthermore, we investigate the roles of perceived Socio-Economic Status (SES) in both childhood and adulthood; SES in childhood could be a confound between education and RWA, and SES in adulthood could be a mediator. We explore these hypotheses with ACE-β models, which extend the logic of discordant twin designs into a structural equation framework. Our results are consistent with a causal effect of education to reduce RWA. SES in adulthood did not mediate this effect. We find that the negative correlation between RWA and education is further amplified by confounding influences, mostly from the family environment, which are partly associated with SES

The genetic underpinnings of right-wing authoritarianism and social dominance orientation explains prejudice beyond big five personality

One of the most robust findings in political psychology is that political and prejudicial attitudes are predicted by right-wing authoritarianism (RWA), social dominance orientation (SDO), and some of the Big Five personality traits. An unresolved question is whether RWA and SDO form a functional package of traits that is independent of common personality variation, or whether they are fully underpinned by it. We use genetically informative data from a sample of 1987 Norwegian twins to shed light on this question, revealing that RWA and SDO are moderately phenotypically correlated, but highly genetically correlated. This suggests that there is a general, heritable hierarchical motive that manifests in terms of RWA and/or SDO depending on environmental factors. Consistent with this, RWA and SDO share a larger genetic substrate with political attitudes that support monopolizing resources and territory for one’s own group (e.g., deporting an ethnic minority) than do Big Five personality traits, while at the same time exhibiting some genetic overlap with two of these personality traits. Overall, these results suggest that Big Five personality traits are not sufficient for explaining prejudicial political attitudes and that the covariation of hierarchy-related traits with political attitudes is best explained by genetic overlap, not common socialization as assumed by key theories in social and political psychology, such as the dual-process model of prejudice