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The experience of power is typically associated with social disengagement, yet power has also been shown to facilitate configural visual encoding – a process that supports the initial perception of a human face. To investigate this apparent contradiction, we directly tested whether power influences the visual encoding of faces. Two experiments, using neural and psychophysical assessments, revealed that low power impeded both first-order configural processing (the encoding of a stimulus as a face, assessed by the N170 event-related potential) and second-order configural processing (the encoding of feature distances within configuration, assessed using the face inversion paradigm), relative to high-power and control conditions. Power did not significantly affect facial feature encoding. Results reveal an early and automatic effect of low power on face perception, characterized primarily by diminished face processing. These findings suggest a novel interplay between visual and cognitive processes in power’s influence on social behavior. ISSN:1747-0919 ISSN:1747-0927

When economic resources are scarce, racial minorities are often devalued and disenfranchised. We proposed that this pattern extends to visual processing, such that the encoding of minority group faces is disrupted under scarcity-an effect that may facilitate discrimination and contribute to racial disparities. Specifically, we used EEG and fMRI to test whether scarce economic conditions induce deficits in neural encoding of Black faces, and we examined whether this effect is associated with discriminatory resource allocation in behavior. In Study 1, framing resources as scarce (vs. neutral) selectively impaired the neural encoding of Black (vs. White) faces, as indexed by a delayed face-related N170 ERP response, and the degree of this encoding deficit predicted anti-Black allocation decisions. In Study 2, we replicated and extended this effect using fMRI: Resources framed as scarce (vs. neutral) reduced face-sensitive fusiform activity to Black (vs. White) faces. Furthermore, scarcity-decreased fusiform activity to Black faces corresponded with decreased valuation-related striatum activity to predict anti-Black allocation decisions. These findings suggest that impaired visual processing and devaluation occur selectively for minorities under scarcity-an implicit effect that may promote discrimination and contribute to rising disparities observed during economic stress. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

It is widely believed that race divides the world into biologically distinct kinds of people-an essentialist belief inconsistent with reality. Essentialist views of race have been described as early emerging, but this study found that young children (n = 203, Mage = 5.45) hold only the more limited belief that the physical feature of skin color is inherited and stable. Overall, children rejected the causal essentialist view that behavioral and psychological characteristics are constrained by an inherited racial essence. Although average levels of children's causal essentialist beliefs about race were low, variation in these beliefs was related to children's own group membership, exposure to diversity, as well as children's own social attitudes.

For 40 years, research on impression formation and attitudes has relied on dual-process theories that represent knowledge in a single associative network. Although such models explain priming effects and some implicit responses, they are generally silent on other forms of learning and on the interface of social cognition with perception and action. Meanwhile, advances in cognitive neuroscience reveal multiple, interacting forms of learning and memory (e.g., semantic associative memory, Pavlovian conditioning, and instrumental learning), with detailed models of their operations, neural bases, and connections with perceptual and behavioral systems. This memory systems perspective offers a more refined, neurally plausible model of social cognition and attitudes that, I argue, provides a useful and generative account of human social behavior.

How do societal stereotypes about social groups become internalized as an individual’s own group-based preferences? Although stereotypes are known to create social expectancies, we propose that stereotypes also shape how one experiences and learns from interactions with group members—a process that may induce internalized group-based preferences. In a series of experiments, participants interacted with players from two groups, described with either positive or negative stereotypes, in a reinforcement learning task presented as a money sharing game. Although players’ sharing behaviors were equated between groups, participants formed more positive reward associations with players from positively-stereotyped groups. Computational modeling revealed that stereotypes set participants’ expectancies about group members’ behavior and biased how they learned from player feedback. We then show that these preferences, once formed, spread unwittingly to others who observe these interactions. Finally, we show that this pattern of biased learning and propagation occurs even when the stereotypic message comes from an opposed politician, suggesting that this transmission—from societal stereotypes to personal preferences—may occur despite one’s explicit goals. These findings provide a mechanistic account of how exposure to social stereotypes can transform into personal group-based preferences and spread to others.

When the economy declines, existing racial disparities typically expand, suggesting that economic scarcity may promote racial discrimination. To understand this pattern, we examined the effect of perceived scarcity on resource allocations to Black and White American recipients, and tested whether this effect depends on a decision maker's motivation to respond without prejudice. We proposed that scarcity would lead to increased discrimination among those with relatively low internal motivation but not those high in internal motivation. Indeed, we found that when resources were framed as scarce (vs. abundant or a control condition), low-motivation participants allocated less to Black than White recipients, whereas high-motivation participants allocated more to Black than White recipients (Studies 1 and 2). This pattern was strongest when decisions could be made deliberatively (Study 3), and anti-Black allocation bias emerged even in a non-zero-sum context (Studies 4 and 5), suggesting a strategic bias directed against Black recipients rather than in favor of White recipients. These findings indicate that the psychological perception of scarcity can produce racial bias in the distribution of economic resources, depending on the motivations of the decision maker-an effect that may contribute to the increase in racial disparities observed during economic stress. (PsycINFO Database Record

Why do essentialist beliefs promote prejudice? We proposed that essentialist beliefs increase prejudice toward Black people because they imply that existing social hierarchies reflect a naturally occurring structure. We tested this hypothesis in three studies ( N = 621). Study 1 revealed that racial essentialism was associated with increased prejudice toward Blacks among both White and Black adult participants, suggesting that essentialism relates to prejudice according to social hierarchy rather than only to group membership. Studies 2 and 3 experimentally demonstrated that increasing essentialist beliefs induced stronger endorsement of social hierarchies in both Black and White participants, which in turn mediated the effect of essentialism on negative attitudes toward Black people. Together, these findings suggest that essentialism increases prejudice toward low-status groups by increasing endorsement of social hierarchies and existing inequality.

Do habits play a role in our social impressions? To investigate the contribution of habits to the formation of social attitudes, we examined the roles of model-free and model-based reinforcement learning in social interactions – computations linked in past work to habit and planning, respectively. Participants in this study learned about novel individuals in a sequential reinforcement learning paradigm, choosing financial advisors who led them to high- or low-paying stocks. Results indicated that participants relied on both model-based and model-free learning, such that each type of learning was expressed in both advisor choices and post-task self-reported liking of advisors. Specifically, participants preferred advisors who could provide large future rewards as well as advisors who had provided them with large rewards in the past. Although participants relied more heavily on model-based learning overall, they varied in their use of model-based and model-free learning strategies, and this individual difference influenced the way in which learning related to self-reported attitudes: among participants who relied more on model-free learning, model-free social learning related more to post-task attitudes. We discuss implications for attitudes, trait impressions, and social behavior, as well as the role of habits in a memory systems model of social cognition.

The field of social robotics offers an unprecedented opportunity to probe the process of impression formation and the effects of identity-based stereotypes (e.g. about gender or race) on social judgements and interactions. We present the concept of fair proxy communication—a form of robot-mediated communication that proceeds in the absence of potentially biasing identity cues—and describe how this application of social robotics may be used to illuminate implicit bias in social cognition and inform novel interventions to reduce bias. We discuss key questions and challenges for the use of robots in research on the social cognition of bias and offer some practical recommendations. We conclude by discussing boundary conditions of this new form of interaction and by raising some ethical concerns about the inclusion of social robots in psychological research and interventions.This article is part of the theme issue ‘From social brains to social robots: applying neurocognitive insights to human–robot interaction’.

People learn about the world by making choices and experiencing feedback—a process characterized by models of reinforcement learning in which people learn to associate their actions with rewarding outcomes. Although reinforcement models provide compelling accounts of feedback-based learning in nonsocial contexts, social interactions typically involve inferences of others' trait characteristics, which may be independent of their reward value. As a result, people may learn differently about humans and nonhumans through reinforcement. In two experiments (and a pilot study), participants interacted with human partners or slot machines that shared money. Computational modeling of behavior revealed different patterns of learning for humans and non-humans: participants relied more on feedback indicating trait generosity (relative to monetary reward) when learning about humans but relied more on monetary reward (relative to generosity) when learning about slots. Furthermore, this pattern of learning had implications for attitudes: whereas participants preferred generous humans, they preferred rewarding slot machines, relative to their respective counterparts. These findings reveal a distinct role for reinforcement learning in social cognition, showing that humans preferentially form abstract trait inferences about other people through feedback in addition to reward associations.

Four experiments examined the effect of proactive control on expressions of implicit racial bias. Whereas reactive control is engaged in response to a biasing influence (e.g., a stereotype, temptation, or distraction), proactive control is engaged in advance of such biases, functioning to strengthen task focus and, by consequence, limiting the affordance for a bias to be expressed in behavior. Using manipulations of response interference to modulate proactive control, proactive control was found to eliminate expressions of weapons bias, prejudice, and stereotyping on commonly used implicit assessments. Process dissociation analysis indicated that this pattern reflected changes in controlled processing but not automatic associations, as theorized, and assessments of neural activity, using event-related potentials, revealed that proactive control reduces early attention to task-irrelevant racial cues while increasing focus on task-relevant responses. Together, these results provide initial evidence for proactive control in social cognition and demonstrate its effectiveness at reducing expressions of implicit racial bias. Based on these findings and past research, we present a model of proactive and reactive control that offers a novel and generative perspective on self-regulation and prejudice reduction. (PsycINFO Database Record (c) 2018 APA, all rights reserved)

Perceptual and judgment creep Do we think that a problem persists even when it has become less frequent? Levari et al. show experimentally that when the “signal” a person is searching for becomes rare, the person naturally responds by broadening his or her definition of the signal—and therefore continues to find it even when it is not there. From low-level perception of color to higher-level judgments of ethics, there is a robust tendency for perceptual and judgmental standards to “creep” when they ought not to. For example, when blue dots become rare, participants start calling purple dots blue, and when threatening faces become rare, participants start calling neutral faces threatening. This phenomenon has broad implications that may help explain why people whose job is to find and eliminate problems in the world often cannot tell when their work is done. Science , this issue p. 1465

The primary aim of this chapter is to provide a framework to understand and synthesize the processes of person construal—early perceptions that lead to initial ingroup/outgroup categorizations—with the processes involved in intergroup relations. To this end, we review research examining the initial perception and categorization of ingroup and outgroup members and its downstream consequences. We first discuss bottom-up processes in person construal based on visual features (e.g., facial prototypicality and bodily cues), and then discuss how top-down factors (e.g., beliefs, stereotypes) may influence these processes. Next, we examine how the initial categorization of targets as ingroup or outgroup members influences identification, stereotyping, and group-based evaluations, and the relations between these constructs. We also explore the implications of the activation of these constructs for a range of social judgments including emotion identification, empathy, and intergroup behaviors. Finally, we describe a variety of well established and more recent strategies to reduce intergroup bias that target the activation of category-based knowledge, including intergroup contact, approach orientations, evaluative conditioning, and perspective taking.

Ostracism is characterized by a social pain provoked by being excluded and ignored. In order to address the effects of social ostracism in virtual non-physical interactions, we developed a more realistic paradigm as an alternative to Cyberball and assessed its effects on participant's expression of basic social needs, emotional experience and painful feeling. The chat room consisted of controlled social dialogue interactions between participants and two other (confederate) chat room partners. Exclusion was manipulated by varying the number of messages a participant received (15% and 33% in exclusion and inclusion, respectively). Analysis of participant (N = 54) responses revealed that exclusion induced a lower experience of basic-need states and greater anger, compared with included participants. In addition, excluded participants reported higher levels of two specific self-pain feelings, namely tortured and hurt. Our findings suggest that this procedure is effective in inducing social ostracism in a realistic and yet highly controlled experimental procedure.

Power is thought to increase discrimination toward subordinate groups, yet its effect on different forms of implicit bias remains unclear. We tested whether power enhances implicit racial stereotyping, in addition to implicit prejudice (i.e., evaluative associations), and examined the effect of power on the automatic processing of faces during implicit tasks. Study 1 showed that manipulated high power increased both forms of implicit bias, relative to low power. Using a neural index of visual face processing (the N170 component of the ERP), Study 2 revealed that power affected the encoding of White ingroup vs. Black outgroup faces. Whereas high power increased the relative processing of outgroup faces during evaluative judgments in the prejudice task, it decreased the relative processing of outgroup faces during stereotype trait judgments. An indirect effect of power on implicit prejudice through enhanced processing of outgroup versus ingroup faces suggested a potential link between face processing and implicit bias. Together, these findings demonstrate that power can affect implicit prejudice and stereotyping as well as early processing of racial ingroup and outgroup faces.

Racial prejudice is associated with a fundamental distinction between "us" and "them"-a distinction linked to the perceived overlap between representations of the self and others. Implicit prejudice has been shown to reduce the intensity of White individuals' hand ownership sensation as induced by the Rubber Hand Illusion (RHI) with dark rubber hands. However, evidence for this link to implicit prejudice comes from self-report questionnaire data regarding the RHI. As an alternative, we assessed the onset time of the RHI. We hypothesized that onset time of the RHI would be higher for the black compared to the white RH, acting as the mediator between implicit prejudice and magnitude of the RH illusion and proprioceptive drift. As expected, participants took longer to incorporate the black RH and presented lower RH illusion magnitude and a smaller proprioceptive drift for the black RH. Mediation analysis revealed a significant indirect effect of implicit racial bias on proprioceptive drift and magnitude of illusion through onset time to illusion only for the black RH. These findings further illuminate the connection between implicit prejudice and embodied perception, suggesting new perspectives on how implicit biases operate., This work was supported by Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq; grant numbers: 466922/2014-0 and 401143/2014-7)., info:eu-repo/semantics/publishedVersion

Despite global increases in diversity, social prejudices continue to fuel intergroup conflict, disparities and discrimination. Moreover, as norms have become more egalitarian, prejudices seem to have 'gone underground', operating covertly and often unconsciously, such that they are difficult to detect and control. Neuroscientists have recently begun to probe the neural basis of prejudice and stereotyping in an effort to identify the processes through which these biases form, influence behaviour and are regulated. This research aims to elucidate basic mechanisms of the social brain while advancing our understanding of intergroup bias in social behaviour.

When the economy declines, racial minorities are hit the hardest. Although existing explanations for this effect focus on institutional causes, recent psychological findings suggest that scarcity may also alter perceptions of race in ways that exacerbate discrimination. We tested the hypothesis that economic resource scarcity causes decision makers to perceive African Americans as "Blacker" and that this visual distortion elicits disparities in the allocation of resources. Studies 1 and 2 demonstrated that scarcity altered perceptions of race, lowering subjects' psychophysical threshold for seeing a mixed-race face as "Black" as opposed to "White." In studies 3 and 4, scarcity led subjects to visualize African American faces as darker and more "stereotypically Black," compared with a control condition. When presented to naïve subjects, face representations produced under scarcity elicited smaller allocations than control-condition representations. Together, these findings introduce a novel perceptual account for the proliferation of racial disparities under economic scarcity.

article i nfo According to the principle of hypodescent, multiracial individuals are categorized according to their most so- cially subordinate group membership. We investigated whether the tendency to apply this principle is relat- ed to political ideology. In three studies, participants categorized a series of morphed faces that varied in terms of racial ambiguity. In each study, self-reported conservatism (vs. liberalism) was associated with the tendency to categorize ambiguous faces as Black. Consistent with the notion that system justification mo- tivation helps to explain ideological differences in racial categorization, the association between conserva- tism and hypodescent was mediated by individual differences in opposition to equality (Study 2) and was stronger when U.S. participants categorized American than Canadian faces (Study 3). We discuss ways in which the categorization of racially ambiguous individuals in terms of their most subordinate racial group may exacerbate inequality and vulnerability to discrimination.

Faces are inherently social, but the extent to which social group information affects early face processing remains unknown. To address this issue, we examined cortical activity associated with structural encoding of novel ingroup vs. outgroup faces. Participants were assigned to one of two arbitrarily-defined groups using the minimal group procedure, and event-related potentials (ERPs) were recorded while participants categorized faces of people identified as members of their novel ingroup vs. outgroup. Our analysis focused on the N170 component of the ERP, which peaks 170 ms following face onset and reflects face structural encoding. Ingroup faces elicited larger N170 amplitudes than outgroup faces, suggesting that mere group information affects this initial stage of face perception. These findings show that social categories influence how we “see” faces, thus providing insight into the process through which categorizations may lead to biased intergroup perceptions.

This study examined factors that predicted children's gender intergroup attitudes at age 5 and the implications of these attitudes for intergroup behavior. Ethnically diverse children from low-income backgrounds (N = 246; Mexican-, Chinese-, Dominican-, and African American) were assessed at ages 4 and 5. On average, children reported positive same-gender and negative other-gender attitudes. Positive same-gender attitudes were associated with knowledge of gender stereotypes. In contrast, positive other-gender attitudes were associated with flexibility in gender cognitions (stereotype flexibility, gender consistency). Other-gender attitudes predicted gender-biased behavior. These patterns were observed in all ethnic groups. These findings suggest that early learning about gender categories shape young children's gender attitudes and that these gender attitudes already have consequences for children's intergroup behavior at age 5.

This study was aimed to the development of an integrated approach for the characterization of particulate matter (PM) pollution events in the South of Italy.PM(10) and PM(2.5) daily samples were collected from June to November 2008 at an urban background site located in Bari (Puglia Region, South of Italy). Meteorological data, particle size distributions and atmospheric dispersion conditions were also monitored in order to provide information concerning the different features of PM sources.The collected data allowed suggesting four indicators to characterize different PM(10) exceedances. PM(2.5)/PM(10) ratio, natural radioactivity, aerosol maps and back-trajectory analysis and particle distributions were considered in order to evaluate the contribution of local anthropogenic sources and to determine the different origins of intrusive air mass coming from long-range transport, such as African dust outbreaks and aerosol particles from Central and Eastern Europe. The obtained results were confirmed by applying principal component analysis to the number particle concentration dataset and by the chemical characterization of the samples (PM(10) and PM(2.5)).The integrated approach for PM study suggested in this paper can be useful to support the air quality managers for the development of cost-effective control strategies and the application of more suitable risk management approaches.

Racial disparities are a major public health concern in the United States. The authors examined whether Black and Latina community members’ perceptions of stigmatization and personal feelings about their group relate to immune and endocrine markers associated with health risk, including the cytokine interleukin-6 (IL-6), which coordinates the immune response to infection, the anabolic hormone dehydroepiandrosterone (DHEA), which promotes cellular resilience, and the catabolic hormone cortisol, which releases metabolic stores in response to threat. Greater perceived stigmatization was associated with higher basal IL-6, whereas greater ingroup pride was related to elevated basal DHEA. These associations remained with adjustment for general perceived stress, experience with discrimination, age, and income. No significant perceived stigmatization or ingroup pride effects emerged for basal cortisol. These findings provide new evidence that perceived stigmatization and ingroup pride are linked to indicators of ...

Ideology is a potent motivational force; human beings are capable of committing atrocities (as well as acts of generosity and courage) and sacrificing even their own lives for the sake of abstract belief systems. In this article, we summarize the major tenets of a model of political ideology as motivated social cognition (Jost et al. in Psychol Bull 129:339–375, 2003a, Psychol Bull 129:389–393, 2003b, Person Soc Psychol Bull 33:989–1007, 2007), focusing on epistemic, existential, and relational motives and their implications for left-right (or liberal-conservative) political orientation. We review behavioral evidence indicating that chronically and temporarily activated needs to reduce uncertainty, ambiguity, threat, and disgust are positively associated with conservatism (or negatively associated with liberalism). Studies from neuroscience and genetics suggest that right- (vs. left-) wing orientation is associated with greater neural sensitivity to threat and larger amygdala volume, as well as less sensitivity to response conflict and smaller anterior cingulate volume. These findings and others provide converging evidence for Jost and colleagues’ model of ideology as motivated social cognition and, more broadly, reflect the utility of an integrative political neuroscience approach to understanding the basic cognitive, neural, and motivational processes that give rise to ideological activity.

Anxiety associated with an intergroup interaction is often thought to interfere with the cognitive control of automatic racial stereotypes. However, this link remains elusive, as self-reported anxiety is not typically associated with assessments of control. The present research tested a neuroendocrine model for how intergroup anxiety may affect controlled processing. White participants met with a Black or White interviewer to discuss their racial attitudes and to complete a measure of stereotype inhibition. Baseline and post-interaction assessments of self-reported anxiety and salivary cortisol were obtained. Although self-reported anxiety was heightened for participants in the Black interviewer condition, it was not associated with control on the stereotyping task. Rather, greater cortisol reactivity to the interracial interaction predicted reduced controlled processing. This pattern was not observed in the White interviewer condition. Implications for theories of intergroup anxiety, self-regulation, and resource depletion are discussed.

The social neuroscience approach integrates theories and methods of social psychology and neuroscience to address questions about social behaviour at multiple levels of analysis. This approach has been especially popular in the domain of intergroup relations, in part because this area of research provides a rich context for connecting basic neurocognitive mechanisms to higher-level interpersonal, group, and societal processes. Here I provide a brief description of the social neuroscience approach, and then review research that has used this approach to advance theories of (a) implicit racial bias and their effects on behaviour, (b) the self-regulation of intergroup responses, and (c) prejudice reduction. I also describe how the social neuroscience perspective suggests some important refinements to theoretical conceptions of implicit bias, prejudice control, and prejudice reduction.

The present hypotheses were guided by four premises, which were systematically examined in six studies involving 409 undergraduate participants. The first premise, established by prior work, is that trait neuroticism is closely associated with avoidance-related goals. The second premise, however, is that neuroticism may be uncorrelated with cognitive tendencies to recognize threats as they occur, and subsequently to down-regulate them. In support of this point, all six studies found that neuroticism was unrelated to post-error behavioral adjustments in choice reaction time. The third premise is that post-error reactivity would nonetheless predict individual differences in threat-recognition (Studies 1 and 2) and its apparent mitigation (Study 3), independently of trait neuroticism. These predictions were supported. The fourth premise is that individual differences in neuroticism and error-reactivity would interact with each other in predicting everyday experiences of distress. In support of such predictions, Studies 4-6 found that higher levels of error-reactivity were associated with less negative affect at high levels of neuroticism, but more negative affect at low levels of neuroticism. The findings are interpreted in terms of trait-cognition self-regulation principles.

Self-control in one’s food choices often depends on the regulation of attention toward healthy choices and away from temptations. We tested whether selective attention to food cues can be modulated by a newly developed proactive self-control mechanism—control readiness—whereby control activated in one domain can facilitate control in another domain. In two studies, we elicited the activation of control using a color-naming Stroop task and tested its effect on attention to food cues in a subsequent, unrelated task. We found that control readiness modulates both overt attention, which involves shifts in eye gaze (Study 1), and covert attention, which involves shift in mental attention without shifting in eye gaze (Study 2). We further demonstrated that individuals for whom tempting food cues signal a self-control problem (operationalized by relatively higher BMI) were especially likely to benefit from control readiness. We discuss the theoretical contributions of the control readiness model and the implications of our findings for enhancing proactive self-control to overcome temptation in food choices.

Personal (internal) and normative (external) impetuses for regulating racially biased behaviour are well-documented, yet the extent to which internally and externally driven regulatory processes arise from the same mechanism is unknown. Whereas the regulation of race bias according to internal cues has been associated with conflict-monitoring processes and activation of the dorsal anterior cingulate cortex (dACC), we proposed that responses regulated according to external cues to respond without prejudice involves mechanisms of error-perception, a process associated with rostral anterior cingulate cortex (rACC) activity. We recruited low-prejudice participants who reported high or low sensitivity to non-prejudiced norms, and participants completed a stereotype inhibition task in private or public while electroencephalography was recorded. Analysis of event-related potentials revealed that the error-related negativity component, linked to dACC activity, predicted behavioural control of bias across conditions, whereas the error-perception component, linked to rACC activity, predicted control only in public among participants sensitive to external pressures to respond without prejudice.

Regulatory focus theory identifies two separate motivational systems, promotion and prevention, that fulfill different regulatory needs and are differentially related to approach and avoidance. In the psychophysiological literature, approach- and avoidance-related emotions and motivational orientations have been linked to asymmetries in frontal cortical activity. In an effort to synthesize these literatures, we examined the relationship between an implicit assessment of chronic regulatory focus and an electroencephalographic (EEG) index of resting frontal cortical asymmetry. Results supported the hypothesis that promotion regulatory focus would be associated with greater left frontal activity, and prevention regulatory focus would be associated with greater right frontal activity. Discussion highlights how this synthesis may benefit theorizing of the relationship between regulatory focus, motivation, and emotion, and of the function of asymmetrical frontal cortical activity.

The activation and control of affective race bias were measured using startle eyeblink responses (Study 1) and self-reports (Study 2) as White American participants viewed White and Black faces. Individual differences in levels of bias were predicted using E. A. Plant and P. G. Devine's (1998) Internal and External Motivation to Respond Without Prejudice scales (IMS/EMS). Among high-IMS participants, those low in EMS exhibited less affective race bias in their blink responses than other participants. In contrast, both groups of high-IMS participants exhibited less affective race bias in self-reported responses compared with low-IMS participants. Results demonstrate individual differences in implicit affective race bias and suggest that controlled, belief-based processes are more effectively implemented in deliberative responses (e.g., self-reports).

Three studies examined the moderating role of motivations to respond without prejudice (e.g., internal and external) in expressions of explicit and implicit race bias. In all studies, participants reported their explicit attitudes toward Blacks. Implicit measures consisted of a sequential priming task (Study 1) and the Implicit Association Test (Studies 2 and 3). Study 3 used a cognitive busyness manipulation to preclude effects of controlled processing on implicit responses. In each study, explicit race bias was moderated by internal motivation to respond without prejudice, whereas implicit race bias was moderated by the interaction of internal and external motivation to respond without prejudice. Specifically, high internal, low external participants exhibited lower levels of implicit race bias than did all other participants. Implications for the development of effective self-regulation of race bias are discussed.

Guilt, shame, and embarrassment are quintessential moral emotions with important regulatory functions for the individual and society. Moral emotions are, however, difficult to study with neuroimaging methods because their elicitation is more intricate than that of basic emotions. Here, using functional MRI (fMRI), we employed a novel social prejudice paradigm to examine specific brain regions associated with real-time moral emotion, focusing on guilt and related moral-negative emotions. The paradigm induced intense moral-negative emotion (primarily guilt) in 22 low-prejudice individuals through preprogrammed feedback indicating implicit prejudice against Black and disabled people. fMRI data indicated that this experience of moral-negative emotion was associated with increased activity in anterior paralimbic structures, including the anterior cingulate cortex (ACC) and anterior insula, in addition to areas associated with mentalizing, including the dorsomedial prefrontal cortex, posterior cingulate cortex, and precuneus. Of significance was prominent conflict-related activity in the supragenual ACC, which is consistent with theories proposing an association between acute guilt and behavioral inhibition. Finally, a significant negative association between self-reported guilt and neural activity in the pregenual ACC suggested a role of self-regulatory processes in response to moral-negative affect. These findings are consistent with the multifaceted self-regulatory functions of moral-negative emotions in social behavior.

A high time-resolved monitoring campaign of bulk deposition of PAHs and metals was conducted near the industrial area and at an urban background site in province of Taranto (Italy) in order to evaluate the impact of the biggest European steel plant. The deposition fluxes of the sum of detected PAHs at the industrial area ranged from 92 to 2432 ng m−2d−1. In particular the deposition fluxes of BaP, BaA, and BkF were, on average, 10, 14, and 8 times higher than those detected at the urban background site, respectively. The same finding was for metals. The deposition fluxes of Ni (19.8 µg m−2d−1) and As (2.2 µg m−2d−1) at the industrial site were about 5 times higher than those at the urban background site, while the deposition fluxes of Fe (57 mg m−2d−1) and Mn (1.02 mg m−2d−1) about 31 times higher. Precipitation and wind speed played an important role in PAH deposition fluxes. Fe and Mn fluxes at the industrial site resulted high when wind direction favored the transport of air masses from the steel plant to the receptor site. The impact of the industrial area was also confirmed by IP/(IP + BgP), IP/BgP, and BaP/BgP diagnostic ratios.

Prejudice researchers are typically interested in two things, neither of which directly concerns the brain: the situational causes and consequences of prejudice for individuals in society, and the psychological mechanisms that drive biased perceptions and discriminatory behavior. Perhaps surprisingly, the field of intergroup relations is the domain in which social neuroscience research has been arguably the most active. This is partly due to a coincidence-many of the first social psychologists with neuroscience training happened to be interested in intergroup questions (Amodio, Harmon-Jones, & Devine, 2003; Bartholow, Pearson, Gratton, & Fabiani, 2003; Ito & Urland, 2003; Phelps et al., 2000; Vanman, Paul, Ito, & Miller, 1997). A more substantive reason, however, is that the field of intergroup relations provides one of the most fertile, multifaceted areas of research for studying the interplay of multiple psychological processes at multiple levels of analysis. And, at its core, the social neuroscience approach is interested in connections across levels of analysis. By studying intergroup processes, social neuroscientists can examine the rich interplay of neural function with cognition, emotion, and behavior as they operate within the individual, dyads, groups, and societies. Prejudice researchers who take this approach hope to probe the psychological mechanisms of intergroup bias while also elucidating brain function.

Social anxiety is the intense fear of negative evaluation by others, and it emerges uniquely from a social situation. Given its social origin, we asked whether an anxiety-inducing social situation could enhance the processing of faces linked to the situational threat. While past research has focused on how individual differences in social anxiety relate to face processing, we tested the effect of manipulated social anxiety in the context of anxiety about appearing racially prejudiced in front of a peer. Visual processing of faces was indexed by the N170 component of the event-related potential. Participants viewed faces of Black and White males, along with nonfaces, either in private or while being monitored by the experimenter for signs of prejudice in a ‘public’ condition. Results revealed a difference in the N170 response to Black and Whites faces that emerged only in the public condition and only among participants high in dispositional social anxiety. These results provide new evidence that anxiety arising from the social situation modulates the earliest stages of face processing in a way that is specific to a social threat, and they shed new light on how anxiety effects on perception may contribute to the regulation of intergroup responses.

When interacting with someone from another social group, one's responses may be influenced by both stereotypes and evaluations. Given behavioral results suggesting that stereotypes and evaluative associations operate independently, we used fMRI to test whether these biases are mediated by distinct brain systems. White participants viewed pairs of Black or White faces and judged them based on an evaluation (who would you befriend?) or a stereotype-relevant trait (who is more likely to enjoy athletic activities?). Multi-voxel pattern analysis revealed that a predominantly occipital network represented race in a context-invariant manner. However, lateral orbitofrontal cortex preferentially represented race during friendship judgments, whereas anterior medial prefrontal cortex preferentially represented race during trait judgments. Furthermore, representation of race in left temporal pole correlated with a behavioral measure of evaluative bias during friendship judgments and, independently, a measure of stereotyping during trait judgments. Whereas early sensory regions represent race in an apparently invariant manner, representations in higher-level regions are multi-componential and context-dependent.

The present work outlines a theory of attitudes toward emotions, provides a measure of attitudes toward emotions, and then tests several predictions concerning relationships between attitudes toward specific emotions and emotional situation selection, emotional traits, emotional reactivity, and emotion regulation. The present conceptualization of individual differences in attitudes toward emotions focuses on specific emotions and presents data indicating that 5 emotions (anger, sadness, joy, fear, and disgust) load on 5 separate attitude factors (Study 1). Attitudes toward emotions predicted emotional situation selection (Study 2). Moreover, attitudes toward approach emotions (e.g., anger, joy) correlated directly with the associated trait emotions, whereas attitudes toward withdrawal emotions (fear, disgust) correlated inversely with associated trait emotions (Study 3). Similar results occurred when attitudes toward emotions were used to predict state emotional reactivity (Study 4). Finally, attitudes toward emotions predicted specific forms of emotion regulation (Study 5).

Particulate matter (PM) is a very complex mixture of many inorganic and organic compounds of primary and secondary origin and this is the main reason why the desired reduction of its concentration and the identification of its many sources constitute a very difficult task. It is widely recognised that atmospheric particles are responsible for adverse effects on the ecosystem, the climate and the health of human beings (Pope & Dockery, 2006). Epidemiological studies have shown a consistent association of the mass concentration of urban air thoracic particles (PM10 particles with an aerodynamic diameter smaller than 10 μm), and its sub-fraction fine particles (PM2.5 particles with an aerodynamic diameter smaller than 2.5 μm), with mortality and morbidity among cardio-respiratory patients (WHO, 2005). Recent studies indicate that PM10 is associated to respiratory responses while PM2.5 may contribute to cardiovascular diseases (Wyzga, 2002). The chemical characteristics of the particulate fractions and biological mechanisms responsible for these adverse health effects are still unknown as well as the aerosol parameters (mass, particle size, surface area, etc) involved in the health impacts (Hauck et al., 2004). In addition, there is an indication that the increase in the atmospheric aerosol burden delays the global warming attributed to the increase in greenhouse gasses (GHG: CO2, CH4, N2O, halocarbons). Whether the increase in GHGs since preindustrial times is producing a warming of 2.3 Wm,anthropogenic contributions to aerosols (primarily sulphate, organic carbon, black carbon, nitrate and dust) together produce a cooling effect, with a total direct radiative forcing of -0.5 Wm2 and an indirect cloud albedo forcing of -0.7 Wm (IPCC, 2007). In recent years many studies have been carried out to determine the chemical composition of atmospheric particulate matter (Vecchi et al., 2007). Most of these studies were devoted to the identification of the main particle sources, with the purpose to identify viable strategies for their reduction. In this chapter we focus the attention mostly on the ionic component of

We examined relationships among individual differences in trait emotions and the emotion-modulated startle-eyeblink response. In particular, we examined the extent to which trait anger, which is negative in valence, would be associated with a pattern of approach motivation in startle eyeblink responses to appetitive stimuli. Self-reported trait emotions were compared with emotion-modulated startle eyeblink responses to auditory probes during appetitive, aversive, and neutral pictures. Results revealed that trait anger, enjoyment, and surprise were each associated with greater blink inhibition to appetitive pictures, indicating an approach motivational response. No other trait emotions were associated with startle eyeblink responses to appetitive or aversive pictures. These results support the idea that trait anger, although experienced as a negative emotion, is associated with an approach-related motivational response to appetitive stimuli at basic, reflexive levels of processing.

The authors tested the effectiveness of implementation intentions as a strategy for limiting the behavioral expression of implicit stereotypes. Implementation intentions are if-then plans that link an intended response to an anticipated situational cue, thereby enabling a reflexive form of control. The authors examined whether two different types of implementation intentions could improve response accuracy on the Shooter Task, a reaction time measure of implicit stereotyping. In Study 1, participants used a distraction-inhibiting implementation intention designed to engage control over the perception of goal-irrelevant stimuli (e.g., race). In Study 2, participants used a response-facilitating implementation intention designed to promote goal-directed action. Across studies, implementation intentions improved accuracy, thereby limiting the behavioral expression of implicit stereotypes. Furthermore, process dissociation analyses indicated that the distraction-inhibiting implementation intention increased controlled processing while reducing automatic stereotype activation, whereas the response-facilitating implementation intention increased only controlled processing. Implications for goal strategy approaches to reducing prejudice are discussed.

Self-regulation is believed to involve changes in motivation and perception that function to promote goal-driven behavior. However, little is known about the way these processes interact during the on-line engagement of self-regulation. The present study examined the coordination of motivation, perception, and action control in White American participants as they regulated responses on a racial stereotyping task. Electroencephalographic indices of approach motivation (left frontal cortical asymmetry) and perceptual attention to Black versus White faces (the P2 event-related potential) were assessed during task performance. Action control was modeled from task behavior using the process-dissociation procedure. A pattern of moderated mediation emerged, such that stronger left frontal activity predicted larger P2 responses to race, which in turn predicted better action control, especially for participants holding positive racial attitudes. Results supported the hypothesis that motivation tunes perception to facilitate goal-directed action. Implications for theoretical models of intergroup response regulation, the P2 component, and the relation between motivation and perception are discussed.

Low-prejudice people vary considerably in their ability to regulate intergroup responses. The authors hypothesized that this variability arises from a neural mechanism for monitoring conflict between automatic race-biased tendencies and egalitarian intentions. In Study 1, they found that low-prejudice participants whose nonprejudiced responses are motivated by internal (but not external) factors exhibited better control on a stereotype-inhibition task than did participants motivated by a combination of internal and external factors. This difference was associated with greater conflict-monitoring activity, measured by event-related potentials, when responses required stereotype inhibition. Study 2 demonstrated that group differences were specific to response control in the domain of prejudice. Results indicate that conflict monitoring, a preconscious component of response control, accounts for variability in intergroup bias among low-prejudice participants.

Implicit stereotyping and prejudice often appear as a single process in behavior, yet functional neuroanatomy suggests that they arise from fundamentally distinct substrates associated with semantic versus affective memory systems. On the basis of this research, the authors propose that implicit stereotyping reflects cognitive processes and should predict instrumental behaviors such as judgments and impression formation, whereas implicit evaluation reflects affective processes and should predict consummatory behaviors, such as interpersonal preferences and social distance. Study 1 showed the independence of participants' levels of implicit stereotyping and evaluation. Studies 2 and 3 showed the unique effects of implicit stereotyping and evaluation on self-reported and behavioral responses to African Americans using double-dissociation designs. Implications for construct validity, theory development, and research design are discussed.

Political scientists and psychologists have noted that, on average, conservatives show more structured and persistent cognitive styles, whereas liberals are more responsive to informational complexity, ambiguity and novelty. We tested the hypothesis that these profiles relate to differences in general neurocognitive functioning using event-related potentials, and found that greater liberalism was associated with stronger conflict-related anterior cingulate activity, suggesting greater neurocognitive sensitivity to cues for altering a habitual response pattern.