Young Children's Preferences: Gender, Race, and Social Status

The development and diversity of religious cognition and behavior: Protocol for Wave 1 data collection with children and parents by the Developing Belief Network

The Developing Belief Network is a consortium of researchers studying human development in diverse social-cultural settings, with a focus on the interplay between general cognitive development and culturally specific processes of socialization and cultural transmission in early and middle childhood. The current manuscript describes the study protocol for the network's first wave of data collection, which aims to explore the development and diversity of religious cognition and behavior. This work is guided by three key research questions: (1) How do children represent and reason about religious and supernatural agents? (2) How do children represent and reason about religion as an aspect of social identity? (3) How are religious and supernatural beliefs transmitted within and between generations? The protocol is designed to address these questions via a set of nine tasks for children between the ages of 4 and 10 years, a comprehensive survey completed by their parents/caregivers, and a task designed to elicit conversations between children and caregivers. This study is being conducted in 39 distinct cultural-religious groups (to date), spanning 17 countries and 13 languages. In this manuscript, we provide detailed descriptions of all elements of this study protocol, give a brief overview of the ways in which this protocol has been adapted for use in diverse religious communities, and present the final, English-language study materials for 6 of the 39 cultural-religious groups who are currently being recruited for this study: Protestant Americans, Catholic Americans, American members of the Church of Jesus Christ of Latter-day Saints, Jewish Americans, Muslim Americans, and religiously unaffiliated Americans.

Girls are good at STEM: Opening minds and providing evidence reduces boys' stereotyping of girls' STEM ability

Girls and women face persistent negative stereotyping within STEM (science, technology, engineering, mathematics). This field intervention was designed to improve boys' perceptions of girls' STEM ability. Boys (N = 667; mostly White and East Asian) aged 9-15 years in Canadian STEM summer camps (2017-2019) had an intervention or control conversation with trained camp staff. The intervention was a multi-stage persuasive appeal: a values affirmation, an illustration of girls' ability in STEM, a personalized anecdote, and reflection. Control participants discussed general camp experiences. Boys who received the intervention (vs. control) had more positive perceptions of girls' STEM ability, d = 0.23, an effect stronger among younger boys. These findings highlight the importance of engaging elementary-school-aged boys to make STEM climates more inclusive.

Children can represent complex social status hierarchies: Evidence from Indonesia

Children's ethnicity-status associations are often studied in societies where one ethnic group possesses status across multiple dimensions, such as political influence and wealth. This study examined children's (6-12 years) and adults' representations of more complex hierarchies in Indonesia (N = 341; 38% Native Indonesian, 33% Chinese Indonesian, and 27% other ethnicities; 55% female, 36% male; 2021-2022), a society where ethnic groups hold distinct forms of status (on average, Native Indonesians have political influence; Chinese Indonesians have wealth). By 6.5 years, children associated Native Indonesians with political influence and Chinese Indonesians with wealth. Intersectional analyses indicated that ethnicity-status associations were stronger for male than female targets. Children of all ethnicities preferred Chinese Indonesians and preferences were predicted by wealth judgments.

The effect of group status on children's hierarchy-reinforcing beliefs

Members of advantaged groups are more likely than members of disadvantaged groups to think, feel, and behave in ways that reinforce their group's position within the hierarchy. This study examined how children's status within a group-based hierarchy shapes their beliefs about the hierarchy and the groups that comprise it in ways that reinforce the hierarchy. To do this, we randomly assigned children (4-8 years; N = 123; 75 female, 48 male; 21 Asian, 9 Black, 21 Latino/a, 1 Middle-Eastern/North-African, 14 multiracial, 41 White, 16 not-specified) to novel groups that differed in social status (advantaged, disadvantaged, neutral third-party) and assessed their beliefs about the hierarchy. Across five separate assessments, advantaged-group children were more likely to judge the hierarchy to be fair, generalizable, and wrong to challenge and were more likely to hold biased intergroup attitudes and exclude disadvantaged group members. In addition, with age, children in both the advantaged- and disadvantaged-groups became more likely to see membership in their own group as inherited, while at the same time expecting group-relevant behaviors to be determined more by the environment. With age, children also judged the hierarchy to be more unfair and expected the hierarchy to generalize across contexts. These findings provide novel insights into how children's position within hierarchies can contribute to the formation of hierarchy-reinforcing beliefs. RESEARCH HIGHLIGHTS: A total of 123 4-8-year-olds were assigned to advantaged, disadvantaged, and third-party groups within a hierarchy and were assessed on seven hierarchy-reinforcing beliefs about the hierarchy. Advantaged children were more likely to say the hierarchy was fair, generalizable, and wrong to challenge and to hold intergroup biases favoring advantaged group members. With age, advantaged- and disadvantaged-group children held more essentialist beliefs about membership in their own group, but not the behaviors associated with their group. Results suggest that advantaged group status can shape how children perceive and respond to the hierarchies they are embedded within.

Do American children automatically encode cues to wealth?

As adults, we readily notice markers of social status and wealth and draw conclusions about individuals based on these cues. Do children do the same? Using a "Who Said What?" task across 5- to 9-year-old American children (n = 159; Mage = 7.44 years; 51.6% female, 47.2% male, 1.2% nonconforming or not provided; 59.1% White, 23.3% racial-ethnic minority, 17.6% not provided) and adults (n = 182; 84.1% female, 13.7% male, 2.2% nonconforming or not provided; 54.9% White, 44.5% racial-ethnic minority, 0.6% not provided), we found that both children and adults automatically encode (i.e., spontaneously notice and remember) occupational cues (i.e., work attire) and quantitative cues (i.e., amount of money) to wealth but that only adults automatically encode qualitative cues to wealth (i.e., car quality), suggesting developmental changes in which types of cues to wealth are most salient. Furthermore, automatic encoding in children was sensitive to contextual factors; children from communities with less affluence and higher rates of unemployment were more likely to encode some wealth cues than their peers from more affluent and employed communities. Finally, from 5 to 7 years of age, children began to draw connections between wealth cues, using occupational cues to make inferences about the quantity and quality of others' possessions. This research highlights the changing salience of wealth cues across development and suggests that even young children are likely to notice economic inequality and thus to be ready for conversations about inequality, as well as the origins of inequality, at an earlier age than previously supposed.

Exposure to Multicultural Context Affects Neural Response to Out-Group Faces: A Functional Magnetic Resonance Imaging Study

Recent migration and globalization trends have led to the emergence of ethnically, religiously, and linguistically diverse countries. Understanding the unfolding of social dynamics in multicultural contexts becomes a matter of common interest to promote national harmony and social cohesion among groups. The current functional magnetic resonance imaging (fMRI) study aimed to (i) explore the neural signature of the in-group bias in the multicultural context; and (ii) assess the relationship between the brain activity and people's system-justifying ideologies. A sample of 43 (22 females) Chinese Singaporeans (M = 23.36; SD = 1.41) was recruited. All participants completed the Right Wing Authoritarianism Scale and Social Dominance Orientation Scale to assess their system-justifying ideologies. Subsequently, four types of visual stimuli were presented in an fMRI task: Chinese (in-group), Indian (typical out-group), Arabic (non-typical out-group), and Caucasian (non-typical out-group) faces. The right middle occipital gyrus and the right postcentral gyrus showed enhanced activity when participants were exposed to in-group (Chinese) rather than out-group (Arabic, Indian, and Caucasian) faces. Regions having a role in mentalization, empathetic resonance, and social cognition showed enhanced activity to Chinese (in-group) rather than Indian (typical out-group) faces. Similarly, regions typically involved in socioemotional and reward-related processing showed increased activation when participants were shown Chinese (in-group) rather than Arabic (non-typical out-group) faces. The neural activations in the right postcentral gyrus for in-group rather than out-group faces and in the right caudate in response to Chinese rather than Arabic faces were in a significant positive correlation with participants' Right Wing Authoritarianism scores (p < 0.05). Furthermore, the activity in the right middle occipital gyrus for Chinese rather than out-group faces was in a significant negative correlation with participants' Social Dominance Orientation scores (p < 0.05). Results are discussed by considering the typical role played by the activated brain regions in socioemotional processes as well as the role of familiarity to out-group faces.

Recommendations for Investigating the Cross-Category Effect Among Hispanic and Latino Populations

Individuals who are Hispanic or Latino make up a substantial portion of the U.S. and world population yet are vastly underrepresented as both participants and stimuli in the face-perception literature. Perceiving and recognizing faces are critical components of everyday social interactions, but cross-category effects (difficulty recognizing faces from other races or ethnicities) can hinder social interactions. Cross-category effects are the most commonly studied face-perception topic with these ethnic groups, but this empirical knowledge should be expanded via culturally relevant considerations. In this article, I describe (a) errors individuals display when categorizing target faces, (b) how social status influences identity and cross-category effects, (c) the potential impact of flexible and heterogeneous social identities on face processing, (d) a critical need for more developmental research, and (e) methodological expansions and generalizability concerns. Thus, I propose important directions for future studies to address these issues and advance knowledge in the field.

Thinking Structurally: A Cognitive Framework for Understanding How People Attribute Inequality to Structural Causes

To make accurate causal inferences about social-group inequalities, people must consider structural causes. Structural causes are a distinct type of extrinsic cause-they are stable, interconnected societal forces that systematically advantage some social groups and disadvantage others. We propose a new cognitive framework to specify how people attribute inequality to structural causes. This framework is rooted in counterfactual theories of causal judgment and suggests that people will recognize structural factors as causal when they are perceived as "difference-making" for inequality above and beyond any intrinsic causes. Building on this foundation, our framework makes the following contributions. First, we propose specific types of evidence that support difference-making inferences about structural factors: within-group change (i.e., observing that disadvantaged groups' outcomes improve under better societal conditions) and well-matched between-group comparisons (i.e., observing that advantaged group members, who have similar baseline traits to the disadvantaged group, experience more favorable societal conditions and life outcomes). Second, we consider contextual, cognitive, and motivational barriers that may complicate the availability and acceptance of this evidence. We conclude by exploring how the framework might be applied in future research examining people's causal inferences about inequality.

Understanding preferences in infancy

A preference is defined as a dispositional state that helps explain why a person chooses one option over another. Preference understanding is a significant part of interpreting and predicting others' behavior, which can also help to guide social encounters, for instance, to initiate interactions and even form relationships based on shared preferences. Cognitive developmental research in the past several decades has revealed that infants have relatively sophisticated understandings about others' preferences, as part of investigations into how young children make sense of others' behavior in terms of mental states such as intentions, dispositions including preferences, and epistemic states. In recent years, research on early psychological knowledge expands to including infant understanding of social situations. As such, infants are also found to use their preference understandings in their social life. They treat favorably others who share their own preferences, and they prefer prosocial and similar others (e.g., those who speak their language). In reviewing these results, we point out future directions for research and conclude with further suggestions and recommendations. This article is categorized under: Cognitive Biology > Cognitive Development Psychology > Development and Aging.

Gender Inclusion and Fit in STEM

Despite progress made toward increasing women's interest and involvement in science, technology, engineering, and math (STEM), women continue to be underrepresented and experience less equity and inclusion in some STEM fields. In this article, I review the psychological literature relevant to understanding and mitigating women's lower fit and inclusion in STEM. Person-level explanations concerning women's abilities, interests, and self-efficacy are insufficient for explaining these persistent gaps. Rather, women's relatively lower interest in male-dominated STEM careers such as computer science and engineering is likely to be constrained by gender stereotypes. These gender stereotypes erode women's ability to experience self-concept fit, goal fit, and/or social fit. Such effects occur independently of intentional interpersonal biases and discrimination, and yet they create systemic barriers to women's attraction to, integration in, and advancement in STEM. Dismantling these systemic barriers requires a multifaceted approach to changing organizational and educational cultures at the institutional, interpersonal, and individual level.

Food as a key disgust elicitor in infancy and childhood: Previous research and opportunities for future study

Disliked foods may have important value in the study of the development of disgust. The current review draws from literature across disciplines, including theories of disgust and studies of the development of eating behavior and food preferences, to highlight food as an important category of disgust responses across a wide age range, including children as young as 3 years old and adults. Children's disgust responses to certain types of food are considered to be both innate and culturally constrained behaviors, and their perceptions of other people's food choices indicate potential links between foods and cultural groups. We end by discussing several ongoing and future research areas, including connections between disgust responses and food rejection in infancy and children's food rejection behaviors across cultures.

Children use race to infer who is "in charge"

Children must navigate multifaceted social hierarchies to make sense of the social world. Whereas race and social status covary in many societies, minimal research has examined whether children use race as a status marker. Across three studies, we asked 3- to 11-year-old American children (N = 646) to determine which of two models was "in charge" while varying the models' race and posture cues. When the cue of race was presented individually (Study 1), children used it to derive their status inferences. That is, they expected a White model to more likely be "in charge" than a Black model. However, when the cue of race was presented in conjunction with conflicting posture cues (Study 3), children relied more heavily on posture to determine who was in "in charge." Thus, whereas children have learned the association between White and higher status from their community, they understand that other cues may be more indicative of social status.

Children's Navigation of Contextual Cues in Peer Transgressions: The Role of Aggression Form, Transgressor Gender, and Transgressor Intention

When faced with transgressions in their peer groups, children must navigate a series of situational cues (e.g., type of transgression, transgressor gender, transgressor intentionality) to evaluate the moral status of transgressions and to inform their subsequent behavior toward the transgressors. There is little research on which cues children prioritize when presented together, how reliance on these cues may be affected by certain biases (e.g., gender norms), or how the prioritization of these cues may change with age. To explore these questions, 138 5- to 7-year-olds (younger children) and 8- to 10-year-olds (older children) evaluated a series of boy and girl characters who partook in physical or relational aggression with ambiguous or purposeful intent. Children were asked to provide sociomoral evaluations (i.e., acceptability, punishment, and intention attribution judgments) and social preferences. Transgressor gender only impacted children’s social preferences. Conversely, aggression form and transgressor intent shifted children’s sociomoral judgments: they were harsher toward physical transgressors with purposeful intent over those with ambiguous intent but made similar evaluations for relational transgressors regardless of intentionality. The present results suggest that gender is perhaps not uniformly relevant to children across all contexts, as other cues were prioritized for children’s sociomoral judgments. Since children likely have less familiarity with relational aggression compared to physical aggression, it follows that intent would only shift judgments about physical transgressors. This research provides insight about how children simultaneously navigate multiple cues in aggression contexts, which is likely reflective of their real-world experiences.

How White American Children Develop Racial Biases in Emotion Reasoning

For decades, affective scientists have examined how adults and children reason about others' emotions. Yet, our knowledge is limited regarding how emotion reasoning is impacted by race-that is, how individuals reason about emotions displayed by people of other racial groups. In this review, we examine the developmental origins of racial biases in emotion reasoning, focusing on how White Americans reason about emotions displayed by Black faces/people. We highlight how racial biases in emotion reasoning, which emerge as early as infancy, likely contribute to miscommunications, inaccurate social perceptions, and negative interracial interactions across the lifespan. We conclude by discussing promising interventions to reduce these biases as well as future research directions, highlighting how affective scientists can decenter Whiteness in their research designs. Together, this review highlights how emotion reasoning is a potentially affective component of racial bias among White Americans.

The "Fat Face" illusion: A robust adaptation for processing pairs of faces

Converging evidence has demonstrated our remarkable capacities to process individual faces. However, in real-life contexts, we rarely see faces in isolation. It is largely unknown how our visual system processes a multitude of faces. The current study explored this question by using the "Fat Face" illusion: when two identical faces are vertically aligned, the bottom face appears bigger. In Experiment 1, we tested the robustness of this illusion by using faces varied by gender and race, by recruiting participants from different countries (Canadian, Chinese, and French), and by implementing different task requirements. We found that the illusion was stable and immune to variations in face gender or face race, perceptual familiarity, and task requirements. Experiment 2 further indicated that binocular vision was essential for this visual illusion. When participants performed the task with one eye covered, the previously robust illusion completely disappeared. Together, these findings revealed a visual adaptation for processing multiple faces in the environment: the face at the top is perceived as more distant from the viewer and appears smaller in size than the face at the bottom. More broadly, overestimating the size of the bottom face may represent a fundamental mechanism for social interactions, ensuring the deployment of attention to those closest to self.

Culture influences the development of children's gender-related peer preferences: Evidence from China and Thailand

Current understanding of how culture relates to the development of children's gender-related peer preferences is limited. To investigate the role of societal acceptance of gender nonconformity, this study compared children from China and Thailand. Unlike China and other cultures where the conceptualization of gender as binary is broadly accepted, individuals who identify as a nonbinary "third" sex/gender have been highly visible and tolerated in Thai society for at least several decades. Chinese and Thai 4- to 9-year-olds (N = 458) viewed vignettes of four hypothetical peers who varied on gender (i.e., boy vs. girl) and gender-typed toy play behavior (i.e., masculine vs. feminine), and were asked to give a friendship preference rating for each peer. Chinese, compared with Thai, children evidenced gender-related peer preferences that emerged earlier, remained more stable across age groups, and were relatively more biased against gender-nonconforming behavior. The only cultural similarity was in children's preference for peers who were of the same gender and/or displayed same-gender-typed behavior. Thus, while preference for peers who are of the same gender and/or display same-gender-typed behavior is common among children across cultures, the developmental onset and course of these preferences vary by culture. Moreover, societal acceptance of gender nonconformity might be key to limiting children's bias against gender-nonconforming peers.

Procedural (in)justice in children: Children choose procedures that favor their ingroup

Research has shown that both ingroup bias and concern for procedural justice emerge early in development; however, these concerns can conflict. We investigated whether 6- to 8-year-old children are more influenced by procedural justice versus ingroup favoritism in a resource allocation task. In our first study, children played a novel spinner game in which they chose among fair, ingroup favoring, and outgroup favoring procedures to decide whether a resource would go to an unfamiliar ingroup or outgroup recipient. We found that 6- to 8-year-olds overall chose ingroup favoring procedures. However, this tendency decreased with age; whereas younger children were more likely to select procedures that were advantageous to their ingroup, older children (7- and 8-year-olds) mostly chose fair procedures. Our second study investigated the motivations underpinning children's choices by testing whether children's fair procedure choices were in part driven by a desire to appear fair. Here we varied whether children made procedure choices in public, allowing them to manage their reputation, versus in private, where reputational concerns should not guide their choices. We found that from 6 to 8 years of age children chose ingroup favoring procedures and that this tendency was slightly stronger when choosing in private. Taken together, our research suggests that ingroup favoritism often trumps procedural justice in resource allocation tasks, especially for younger children and especially when reputation is not in play.

Reducing Prejudice Through Promoting Cross-Group Friendships

Around the globe, individuals are affected by exclusion, discrimination, and prejudice targeting individuals from racial, ethnic, and immigrant backgrounds as well as crimes based on gender, nationality, and culture (United Nations General Assembly, 2016). Unfortunately, children are often the targeted victims (Costello & Dillard, 2019). What is not widely understood is that the intergroup biases underlying systemic racism start long before adulthood with children displaying notable signs of intergroup bias, sometimes before entering grade school. Intergroup bias refers to the tendency to evaluate members of one’s own group more favorably than someone not identified with one’s group and is typically associated with prejudicial attitudes. Children are both the victims and the perpetrators of bias. In this review, we provide evidence of how biases emerge in childhood, along with an analysis of the significant role of intergroup friendships on enhancing children’s well-being and reducing prejudice in childhood. The review focuses predominantly on the context of race, with the inclusion of several other categories, such as nationality and religion. Fostering positive cross-group friendships in childhood helps to address the negative long-term consequences of racism, discrimination, and prejudice that emerges in childhood and continues through to adulthood.

Young children form generalized attitudes based on a single encounter with an outgroup member

The goal of the present research was to assess whether children's first interaction with a single outgroup member can significantly impact their general attitudes toward the outgroup as a whole. In two preregistered studies, 5- to 6-year-old Chinese children (total N = 147) encountered a Black adult from another country for the very first time, and they played a game together. General attitudes toward the outgroup were assessed using both implicit and explicit measures. In both studies, the interaction resulted in less negative explicit attitudes toward Black people, but more negative implicit attitudes. The results demonstrate for the first time that one encounter with a single outgroup member can impact children's general attitudes toward that group, and that it can have differential effects on implicit and explicit attitudes.

The effect of gender stereotypes on young girls' intuitive number sense

Despite the global importance of science, engineering, and math-related fields, women are consistently underrepresented in these areas. One source of this disparity is likely the prevalence of gender stereotypes that constrain girls' and women's math performance and interest. The current research explores the developmental roots of these effects by examining the impact of stereotypes on young girls' intuitive number sense, a universal skill that predicts later math ability. Across four studies, 762 children ages 3-6 were presented with a task measuring their Approximate Number System accuracy. Instructions given before the task varied by condition. In the two control conditions, the task was described to children either as a game or a test of eyesight ability. In the experimental condition, the task was described as a test of math ability and that researchers were interested in whether boys or girls were better at math and counting. Separately, we measured children's explicit beliefs about math and gender. Results conducted on the combined dataset indicated that while only a small number of girls in the sample had stereotypes associating math with boys, these girls performed significantly worse on a test of Approximate Number System accuracy when it was framed as a math test rather than a game or an eyesight test. These results provide novel evidence that for young girls who do endorse stereotypes about math and gender, contextual activation of these stereotypes may impair their intuitive number sense, potentially affecting their acquisition of formal mathematics concepts and developing interest in math-related fields.

Understanding Intergroup Relations in Childhood and Adolescence

There are various theoretical approaches for understanding intergroup biases among children and adolescents. This article focuses on the social identity approach and argues that existing research will benefit by more fully considering the implications of this approach for examining intergroup relations among youngsters. These implications include (a) the importance of self-categorization, (b) the role of self-stereotyping and group identification, (c) the relevance of shared understandings and developing ingroup consensus, and (d) the importance of coordinated action for positive and negative intergroup relations. These implications of the social identity approach suggest several avenues for investigating children’s and adolescents’ intergroup relations that have not been fully appreciated in the existing literature. However, there are also limitations to the social identity approach for the developmental understanding and some of these are discussed.

Racial Awareness and Bias Begin Early: Developmental Entry Points, Challenges, and a Call to Action

Overt expressions of racial intolerance have surged precipitously. The dramatic uptick in hate crimes and hate speech is not lost on young children. But how, and how early, do children become aware of racial bias? And when do their own views of themselves and others become infused with racial bias? This article opens with a brief overview of the existing experimental evidence documenting developmental entry points of racial bias in infants and young children and how it unfolds. The article then goes on to identify gaps in the extant research and outlines three steps to narrow them. By bringing together what we know and what remains unknown, the goal is to provide a springboard, motivating a more comprehensive psychological-science framework that illuminates early steps in the acquisition of racial bias. If we are to interrupt race bias at its inception and diminish its effects, then we must build strong cross-disciplinary bridges that span the psychological and related social sciences to shed light on the pressing issues facing our nation's young children and their families.

Beliefs about social norms and racial inequalities predict variation in the early development of racial bias

Racism remains a pervasive force around the world with widespread and well documented harmful consequences for members of marginalized racial groups. The psychological biases that maintain structural and interpersonal racism begin to emerge in early childhood, but with considerable individual variation-some children develop more racial bias than others. The present study (N = 116; 4-year-old children) provides novel insights into the developmental mechanisms underlying the emergence of racial bias by longitudinally documenting how two psychological processes-normative beliefs about interracial friendships and explanatory beliefs about racial inequalities-developmentally predict the emergence of pro-White/anti-Black racial bias during early childhood. In a 6-month, three-wave, longitudinal study, we found that 4-year-old children's beliefs that their parents and peers do not value interracial friendships predicted increased racial bias in and across time and that children's endorsement of essentialist over extrinsic explanations for racial inequalities predicted the developmental trajectory of racial bias over time. These findings suggest that children's foundational beliefs about the social world developmentally predict the emergence of racial bias in early childhood and speak to the importance of early and persistent intervention efforts targeting children's normative beliefs about interracial friendships and explanatory beliefs about racial inequalities.

Dichotomous thinking about social groups: Learning about one group can activate opposite beliefs about another group

Across three studies (N = 607), we examined people's use of a dichotomizing heuristic-the inference that characteristics belonging to one group do not apply to another group-when making judgments about novel social groups. Participants learned information about one group (e.g., "Zuttles like apples"), and then made inferences about another group (e.g., "Do Twiggums like apples or hate apples?"). Study 1 acted as a proof of concept: Eight-year-olds and adults (but not 5-year-olds) assumed that the two groups would have opposite characteristics. Learning about the group as a generic whole versus as specific individuals boosted the use of the heuristic. Study 2 and Study 3 (sample sizes, methods, and analyses pre-registered), examined whether the presence or absence of several factors affected the activation and scope of the dichotomizing heuristic in adults. Whereas learning about or treating the groups as separate was necessary for activating dichotomous thinking, intergroup conflict and featuring only two (versus many) groups was not required. Moreover, the heuristic occurred when participants made both binary and scaled decisions. Once triggered, adults applied this cognitive shortcut widely-not only to benign (e.g., liking apples) and novel characteristics (e.g., liking modies), but also to evaluative traits signaling the morals or virtues of a social group (e.g., meanness or intelligence). Adults did not, however, extend the heuristic to the edges of improbability: They failed to dichotomize when doing so would attribute highly unusual preferences (e.g., disliking having fun). Taken together, these studies indicate the presence of a dichotomizing heuristic with broad implications for how people make social group inferences.

Crossing ethnic boundaries? A social network investigation of defending relationships in schools

Prosocial peer relationships, such as defending against victimization, are beneficial for integration. Using the concept of multiple categorization, this study considers the extent to which similarity in gender, being in the same classroom, and similarity in network position regarding bullying or victimization contributes to the formation of cross-ethnic defending relationships among children. Longitudinal social network models were applied to complete school-level networks of 1,325 children in eight multi-ethnic elementary schools. Although same-ethnic peers were more likely to defend each other than cross-ethnic peers, similarity in gender, being in the same classroom, and similarity in network position in bullying fostered cross-ethnic defending. Moreover, being in the same classroom increased the likelihood of cross-ethnic defending even more than it did same-ethnic defending. A better understanding of how multiple categorization contributes to positive relationships between peers of different ethnic backgrounds may help to promote interethnic integration in multi-ethnic classrooms.

Intuitive sociology

How do humans intuitively understand the structure of their society? How should psychologists study people's commonsense understanding of societal structure? The present chapter seeks to address both of these questions by describing the domain of "intuitive sociology." Drawing primarily from empirical research focused on how young children represent and reason about social groups, we propose that intuitive sociology consists of three core phenomena: social types (the identification of relevant groups and their attributes); social value (the worth of different groups); and social norms (shared expectations for how groups ought to be). After articulating each component of intuitive sociology, we end the chapter by considering both the emergence of intuitive sociology in infancy as well as transitions from intuitive to reflective representations of sociology later in life.

The influence of cooperation and competition on preschoolers' prosociality toward in-group and out-group members

Past research suggests that children favour their in-group members over out-group members as indicated by selective prosociality such as sharing or social inclusion. This preregistered study examined how playing a cooperative, competitive or solitary game influences German 4- to 6-year-olds' in-group bias and their general willingness to act prosocially, independent of the recipient's group membership (N = 144). After playing the game, experimenters introduced minimal groups and assessed children's sharing with an in-group and an out-group member as well as their social inclusion of an out-group member into an in-group interaction. Furthermore, we assessed children's physical engagement and parents' social dominance orientation (SDO)-a scale indicating the preference for inequality among social groups-to learn more about inter-individual differences in children's prosocial behaviours. Results suggest that children showed a stronger physical engagement while playing competitively as compared with cooperatively or alone. The different gaming contexts did not impact children's subsequent in-group bias or general willingness to act prosocially. Parental SDO was not linked to children's prosocial behaviours. These results indicate that competition can immediately affect children's behaviour while playing but raise doubt on the importance of cooperative and competitive play for children's subsequent intergroup and prosocial behaviour.

The Effects of Race, Gender, and Gender-Typed Behavior on Children's Friendship Appraisals

From a young age, children's peer appraisals are influenced by the social categories to which peers belong based on factors such as race and gender. To date, research regarding the manner in which race- and gender-related factors might interact to influence these appraisals has been limited. The present study employed an experimental vignette paradigm to investigate the relative influences of target peers' race, gender, and gender-typed behavior toward 4- to 6-year-old Chinese children's (N = 119, 62 girls, 57 boys) peer appraisals. Appraisals were assessed via (1) a rating scale measuring children's interest in being friends with a range of hypothetical target peers varying in race, gender, and gender-typed behavior, and (2) a forced-choice rank-order task in which children indicated their preferences for four hypothetical target peers who varied from themselves on either race, gender, or gender-typed behavior, or were similar to themselves on all three traits. There was little evidence to suggest children's rank-ordered peer preferences in relation to race were influenced by whether the other-race presented was White (preferred relatively more) or Black (preferred relatively less). In contrast, gender-related factors (i.e., rater gender, target gender, target gender-typed behavior) had more robust influences on peer preferences for both outcome measures. Gender-conforming peers were preferred over gender-nonconforming peers, and target boys displaying feminine behavior were less preferred than target girls displaying masculine behavior. The results help characterize cross-cultural (in)consistencies in children's social preferences in relation to peers' race and gender.

The Development of Identity Fusion

The fusion of personal and group identities can lead to self-sacrificial progroup behavior, from acts of charity to violent extremism. Two pathways to identity fusion-via shared biology and shared experiences-have been proposed. In this article, we elucidate a new developmental account of the origins and mechanisms of these two pathways to identity fusion from childhood to adulthood. Whereas fusion based on shared biology occurs from early childhood cued by phenotypic similarity, fusion based on episodic memories of shared experiences is not possible until midadolescence and relies on suitable bonding experiences (e.g., painful initiation rituals, emotionally intense team sports). The critical development that enables fusion based on shared experiences is autobiographical reasoning, which entails connecting one's past experiences to the present self. Autobiographical reasoning begins in adolescence, which may explain the flourishing of fusion in late adolescence and young adulthood relative to other life periods. Fusion via either pathway is linked to strong progroup behavior. We outline a program of empirical research on the development of identity fusion while addressing relevant methodological challenges. A developmental framework may help foster efforts to harness identity fusion for peaceful rather than violent forms of self-sacrifice for the group.

A Call for Greater Attention to Culture in the Study of Brain and Development

Despite growing research on neurobiological development, little attention has been paid to cultural and ethnic variation in neurodevelopmental processes. We present an overview of the current state of developmental cognitive neuroscience with respect to its attention to cultural issues. Analyses based on 80 publications represented in five recent meta-analyses related to adolescent developmental neuroscience show that 99% of the publications used samples in Western countries. Only 22% of studies provided a detailed description of participants' racial/ethnic background, and only 18% provided for socioeconomic status. Results reveal a trend in developmental cognitive neuroscience research: The body of research is derived not only mostly from Western samples but also from participants whose race/ethnicity is unknown. To achieve a holistic perspective on brain development in different cultural contexts, we propose and highlight an emerging interdisciplinary approach-developmental cultural neuroscience-the intersection of developmental psychology, cultural psychology, and cognitive neuroscience. Developmental cultural neuroscience aims to elucidate cultural similarities and differences in neural processing across the life span. We call attention to the importance of incorporating culture into the empirical investigation of neurodevelopment.

How Do Young Children Explain Differences in the Classroom? Implications for Achievement, Motivation, and Educational Equity

Classroom settings bring to light many differences between children—differences that children notice and attempt to explain. Here, we advance theory on the psychological processes underlying how children explain the differences they observe in the classroom. Integrating evidence from cognitive, social, cultural, developmental, and educational psychology, we propose that young children tend to explain differences among their peers by appealing to the inherent characteristics of those individuals and, conversely, tend to overlook extrinsic reasons for such differences—that is, reasons having to do with external circumstances and structural factors. We then outline how this inherence bias in children’s explanations affects their motivation and performance in school, exacerbating inequalities in achievement and making these inequalities seem legitimate. We conclude by suggesting several means of counteracting the inherence bias in children’s explanations and its effects on their educational outcomes. Throughout, we highlight new directions for research on the relation between children’s explanations, their motivation and achievement, and the inequalities observed in elementary school and beyond.

Cognitive flexibility and parental education differentially predict implicit and explicit racial biases in bilingual children

Prior research has suggested that bilingual children demonstrate reduced social bias relative to their monolingual peers. In particular, they exhibit less implicit bias against racial outgroups. However, the cognitive determinants of racial bias in bilingual children remain unclear. In the current study, relationships between racial bias and three cognitive factors (inhibitory control, cognitive flexibility, and perspective-taking ability), along with language proficiency and parental education, were investigated in a sample of bilingual preschoolers (N = 55). Children were bilingual learners of English and Mandarin. Results demonstrated that implicit bias was predicted by cognitive flexibility, independent of variation in inhibitory control, second language vocabulary, perspective taking, and parental education. In contrast, explicit bias was predicted by parental education alone and not by cognitive or linguistic factors. Findings suggest that increased cognitive flexibility, often thought to be an outgrowth of bilingual experience, may also be associated with a reduction in implicit bias. Findings are discussed in terms of specific mechanisms that may link cognitive factors, bilingualism, and racial bias.

A Developmental Science Perspective on Social Inequality

Many people believe in equality of opportunity, but overlook and minimize the structural factors that shape social inequalities in the United States and around the world, such as systematic exclusion (e.g., educational, occupational) based on group membership (e.g., gender, race, socioeconomic status). As a result, social inequalities persist, and place marginalized social groups at elevated risk for negative emotional, learning, and health outcomes. Where do the beliefs and behaviors that underlie social inequalities originate? Recent evidence from developmental science indicates that an awareness of social inequalities begins in childhood, and that children seek to explain the underlying causes of the disparities that they observe and experience. Moreover, children and adolescents show early capacities for understanding and rectifying inequalities when regulating access to resources in peer contexts. Drawing on a social reasoning developmental framework, this paper synthesizes what is currently known about children's and adolescents' awareness, beliefs, and behavior concerning social inequalities, and highlights promising avenues by which developmental science can help reduce harmful assumptions and foster a more just society.

Children's use of race and gender as cues to social status

Social hierarchies are ubiquitous and determine a range of developmental outcomes, yet little is known about when children develop beliefs about status hierarchies in their communities. The present studies (3.5-6.9 years; N = 420) found that children begin to use gender and race as cues to status in early childhood, but that gender and race related to different status dimensions and had different consequences for inter-group attitudes. Children expected boys to hold higher status as defined by access to resources and decision-making power (e.g., having more toys and choosing what other people play with) but did not expect boys to have more wealth overall. Gender-related status beliefs did not relate to gender-related social preferences; instead, children preferred members of their own gender, regardless of their status beliefs. In contrast, children expected White people to be wealthier than Black people, and among some populations of children, the belief that White people were higher status (as defined by access to resources and decision-making power) weakly related to pro-White bias. Children's status-expectations about others were unrelated to beliefs about their own status, suggesting children more readily apply category-based status beliefs to others than to themselves.

The Development of Social Categorization

Social categorization is a universal mechanism for making sense of a vast social world with roots in perceptual, conceptual, and social systems. These systems emerge strikingly early in life and undergo important developmental changes across childhood. The development of social categorization entails identifying which ways of classifying people are culturally meaningful, how these categories might be used to predict, explain, and evaluate the behavior of other people, and how one's own identity relates to these systems of categorization and representation. Social categorization can help children simplify and understand their social environment but has detrimental consequences in the forms of stereotyping, prejudice, and discrimination. Thus, understanding how social categorization develops is a central problem for the cognitive, social, and developmental sciences. This review details the multiple developmental processes that underlie this core psychological capacity.

Majority group children expect that ethnic out-group peers feel fewer positive but more negative emotions than in-group peers

Across two studies majority group children's (8-13 years) perception of positive and negative emotions in ethnic in-group and disadvantaged ethnic out-group peers was examined. Study 1 (N = 302) showed that children expected in-group peers to feel better in a positive situation compared to out-group peers. Whereas, in a negative situation, children expected in-group peers to feel less bad compared to out-group peers, particularly when they evaluated the in-group as very positive. Study 2 (N = 201) replicates these findings across multiple positive and negative situations, and additionally shows that in very negative situations children expect in-group and out-group peers to feel equally bad. These results suggest that children's perception of emotions in others is influenced by ethnic group membership.

Teachers' nonverbal behaviors influence children's stereotypic beliefs

The current research tested whether differences in teachers' nonverbal behaviors influence children's intergroup attitudes and stereotypic beliefs. In this study, 5- to 8-year-old participants (N = 96) were assigned to novel groups (marked by T-shirt color) and then viewed interactions between teachers and pairs of students who were also members of the novel groups. Across four interactions, the teacher directed positive nonverbal behaviors toward students from one group and directed negative nonverbal behaviors toward students from another group. After viewing the interactions, participants were presented with pairs of new students from the two novel groups and were asked three types of test questions. When participants were asked who was smarter, they selected new students from the group that had received positive nonverbal behaviors regardless of their own group membership. However, when asked who they would like to befriend, only participants who were assigned to the group that received positive behaviors selected ingroup members. On trials where participants were asked to select a partner on an academic task, participants' selections did not differ from chance. This study shows that teachers' nonverbal behaviors may be one source of children's academic stereotypes, including negative stereotypes about groups to which they belong. Moreover, these findings highlight the importance of subtle social cues in guiding children's beliefs about social groups.

Infants' Individuation of Faces by Gender

By 3 months of age, infants can perceptually distinguish faces based upon differences in gender. However, it is still unknown when infants begin using these perceptual differences to represent faces in a conceptual, kind-based manner. The current study examined this issue by using a violation-of-expectation manual search individuation paradigm to assess 12- and 24-month-old infants’ kind-based representations of faces varying by gender. While infants of both ages successfully individuated human faces from non-face shapes in a control condition, only the 24-month-old infants’ reaching behaviors provided evidence of their individuating male from female faces. The current findings help specify when infants begin to represent male and female faces as being conceptually distinct and may serve as a starting point for socio-cognitive biases observed later in development.

The Nature and Consequences of Essentialist Beliefs About Race in Early Childhood

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.

Face Processing in Infancy and Beyond: The Case of Social Categories

Prior reviews of infant face processing have emphasized how infants respond to faces in general. This review highlights how infants come to respond differentially to social categories of faces based on differential experience, with a focus on race and gender. We examine six different behaviors: preference, recognition, scanning, category formation, association with emotion, and selective learning. Although some aspects of infant responding to face race and gender may be accounted for by traditional models of perceptual development, other aspects suggest the need for a broader model that links perceptual development with social and emotional development. We also consider how responding to face race and gender in infancy may presage responding to these categories beyond infancy and discuss how social biases favoring own-race and female faces are formed.