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1.
Neuroimage ; 217: 116939, 2020 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-32416229

RESUMO

We effortlessly sort people into different racial groups from their visual appearance and implicitly generate racial bias affecting cognition and behavior. As these mental activities provide the proximate mechanisms for social behaviours, it becomes essential to understand the neural activity underlying differences between own-race and other-race visual categorization. Yet intrinsic limitations of individual neuroimaging studies, owing to reduced sample size, inclusion of multiple races, and interactions between races in the participants and in the displayed visual stimuli, dampens generalizability of results. In the present meta-analytic study, we applied multimodal techniques to partly overcome these hurdles, and we investigated the entire functional neuroimaging literature on race categorization, therefore including more than 2000 Black, White and Asian participants. Our data-driven approach shows that own- and other-race visual categorization involves partly segregated neural networks, with distinct connectivity and functional profiles, and defined hierarchical organization. Categorization of own-race mainly engages areas related to cognitive components of empathy and mentalizing, such as the medial prefrontal cortex and the inferior frontal gyrus. These areas are functionally co-activated with cortical structures involved in auto-biographical memories and social knowledge. Conversely, other-race categorization recruits areas implicated in, and functionally connected with, visuo-attentive processing, like the fusiform gyrus and the inferior parietal lobule, and areas engaged in affective functions, like the amygdala. These results contribute to a better definition of the neural networks involved in the visual parcelling of social categories based on race, and help to situate these processes within a common neural space.


Assuntos
Neuroanatomia , Grupos Raciais , Percepção Visual/fisiologia , Tonsila do Cerebelo/diagnóstico por imagem , Tonsila do Cerebelo/fisiologia , Povo Asiático , Atenção , População Negra , Mapeamento Encefálico , Feminino , Humanos , Funções Verossimilhança , Imageamento por Ressonância Magnética , Masculino , Vias Neurais/diagnóstico por imagem , Vias Neurais/fisiologia , Lobo Parietal/diagnóstico por imagem , Lobo Parietal/fisiologia , Estimulação Luminosa , Córtex Pré-Frontal/diagnóstico por imagem , Córtex Pré-Frontal/fisiologia , Comportamento Social , Percepção Social , Lobo Temporal , População Branca , Adulto Jovem
2.
Sci Rep ; 11(1): 16407, 2021 08 12.
Artigo em Inglês | MEDLINE | ID: mdl-34385520

RESUMO

Anti-immigration rhetoric in the mass media has intensified over the last two decades, potentially decreasing prosocial behavior and increasing outgroup hostility toward immigrants, and fostering ingroup favoritism toward natives. We aim to understand the effects of negative and positive discourses about immigration on prosociality at different levels of societal ethnic diversity. In two studies (student sample, nationally representative sample), we conduct a survey and a 3X3 between-subject experiment, including money-incentivized behavioral games measuring prosociality. We manipulate media representations of immigrants and the probability of interacting with immigrants (the latter measuring diversity). Results show that negative news affects prosociality as a function of the probability of interacting with immigrants. Negative portrayals increase altruism and trustworthiness in ethnically homogenous settings relative to unknown and ethnically-mixed contexts. These results are stronger for right-wing and high-prejudice respondents. Moreover, negative media portrayals of immigrants increase the testosterone-cortisol ratio, which is a proxy for proneness to social aggression. Negative news also increases outgroup-related perceived health risk, outgroup anxiety and outgroup threat less in ethnically-homogeneous contexts. Overall, negative portrayals of immigrants generate physiological and emotional hostility toward the outgroup, and ingroup favoritism in economic transactions, possibly determining efficiency losses in ethnically-diverse markets, relative to ethnically-homogeneous markets.

3.
Neurosci Biobehav Rev ; 102: 318-326, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31042557

RESUMO

Social neuroscience is unveiling how the brain coordinates the construal of social categories and the generation of intergroup biases from facial perception. Recent evidence indicates that social categorization is more sensitive and malleable to elemental facial features than previously assumed. At the same time, perception of social categories can be crafted by top-down factors, including prior knowledge, motivations, and social expectations. In this review, we summarize extant wisdom and propose a model that goes beyond traditional accounts that have conceived stereotypes and prejudices as the end result of "reading out" social categories in the face, and have assumed a hierarchical brain organization. Our model proposes recursive and dynamic interactions amid distant brain regions. Accordingly, the reciprocal exchange of sensory evidence and predictions biases and "explains away" visual input in face perception regions until a compromise is achieved and social perception stabilizes. Ideally, this effort would contribute to shape a research field at the interface between neural and social sciences, which is often referred to as social vision.


Assuntos
Encéfalo/fisiologia , Reconhecimento Facial/fisiologia , Modelos Teóricos , Preconceito , Percepção Social , Estereotipagem , Humanos
4.
PLoS One ; 12(1): e0169278, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28056046

RESUMO

The purpose of this paper is twofold: to validate the properties of the Italian version of the Baller Identity Measurement Scale (i.e., BIMS-IT), a self-report questionnaire based on the athletic and academic identities; and to investigate differences in psychosocial factors such as gender, age, type of sport, and competition level. The dimensionality of the BIMS-IT was explored by means of the exploratory factor analysis, considering the scale's internal consistency too (Confirmatory Factor Analysis). Results related to exploratory and confirmatory factor analysis supported a model of measurement composed of two correlated factors: the athletic and academic identities and affectivity related to identities. For both factors, differences emerged between age, and competition level sub groups. In particular, higher identity scores emerged for ≤ 24 years old student-athletes with respect to their age counterparts. National sub-elite student-athletes reported lower identity values than those of national elite and international levels. Results suggest that the Italian version of the BIMS-IT is psychometrically robust and could be adopted for empirical uses. The higher identity scores reported by younger and higher competition level participants suggest a correspondent higher involvement into the student-athlete role. However, BIMS-IT represents a distinct model with respect to the original American BIMS, determining the need of further research on the student-athletes' identity to better clarify any socio-cultural contest effects.


Assuntos
Atletas/estatística & dados numéricos , Estudantes/estatística & dados numéricos , Adolescente , Adulto , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Esportes/estatística & dados numéricos , Inquéritos e Questionários , Adulto Jovem
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