Developmental Psychology最新文献

In the first few months of life, infants display intriguing individual differences in how they react to novel stimuli in their environment. Infant "negative reactive" tendencies have been robustly linked to resting brain activity profiles that confer risk for maladaptive socioemotional outcomes. The present study examines whether and how caregiver behavior in early infancy may interact with infant negative reactivity to alter the extent to which such tendencies predict risk-related brain activity profiles. In the present study, 51 mothers (all White; age M = 32 years, SD = 3; 70.8% monthly household income > 3,400 U.S. dollars) and their infants (39.2% female at birth) participated. We measured infant negative reactivity and maternal contingent responsiveness to infant's gaze during mother-infant interactions at age 4 months. At 10-11 months, we assessed infants' resting electroencephalographic (EEG) 6-9 Hz frontal asymmetry (a marker of risk for maladaptive regulatory behaviors and withdrawal), infant fearful withdrawal, and infant empathic behavior. We found that maternal contingent responsiveness to 4-month-old infant's gaze in naturalistic interactions moderated the relation between 4-month infant negative reactivity and 11-month resting EEG asymmetry. Results suggest that maternal contingent responsiveness alters the extent to which early reactive tendencies end up "embedded" in infant brain activity profiles. Exploratory analyses revealed that the interaction between maternal contingent responsiveness and infant reactivity predicting infant resting EEG asymmetry, in turn predicted infants' fearful withdrawal and empathic behaviors also assessed at 10-11 months. Findings demonstrate the critical buffering role of maternal contingent responsive behaviors in reducing potential maladaptive neural and socioemotional outcomes. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Developmental science aims to explain development across the lifespan. Jerome Kagan observed that the same behavior can occur for different reasons, and differing behaviors can occur for the same reason. To help account for persistence, desistence, and transformation of behavior across development, Kagan introduced various types of continuity and discontinuity of forms and functions of behavior. This framework provides opportunities for identifying explanatory mechanisms in behavior development. However, misconceptions remain in applying the concepts that Kagan introduced. Much of the literature assumes developmental continuity in constructs without examining whether assumptions are supported, leading to faulty developmental inferences. For instance, the use of the same measure across time to assess development assumes that the behavior occurs for the same reason across time (homotypic continuity). In addition, just because one behavior predicts a different behavior at a later time does not necessarily indicate that age-differing behaviors occur for the same reason (heterotypic continuity). This review aims to advance conceptualizations of continuity and discontinuity from a contemporary perspective with aims to improve mechanistic understanding of behavior development across the lifespan. To better align behaviors, functions, and mechanisms, research should (a) examine (dis)continuity of individual behaviors rather than merely syndromes, (b) identify the function(s) of the given behavior(s), and (c) identify the cognitive and biological processes that underlie the behavior-function pairs. Incorporating examples from research on development of humans and nonhuman animals, I discuss challenges from work that has followed Kagan's ideas and ways to advance understanding of continuity and discontinuity across development. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Investigating the structure and etiology of temperament is key to understanding how children interact with the world (Kagan, 1994). Although these topics have yielded an abundance of research, fewer studies have employed observational data during middle childhood, when unique environmental challenges could influence temperament development. To address this gap, Israeli twin children were observed at Age 6.5 (N = 1,083, 564 families; 50.6% females) and again at Age 8-9 (N = 768, 388 families; 52.0% females; 611 children from 322 families had data from both ages). Temperament was assessed globally by trained coders and, at Age 8-9, also by the experimenter who interacted with the child. We examined whether Rothbart et al.'s (2000) three-factor model, according to which temperament includes the domains negative affect, positive affect/surgency, and effortful control, emerges from the data. In addition, we considered a bifactor model, where a fourth global factor accounts for all behaviors' commonality. Across the two ages and rating methods, confirmatory factor analyses supported the bifactor model. The global factor's loadings suggested that it reflects children's expressiveness. Adding this factor changed the associations between the other factors and enabled differentiation between surgency and positive affect. This suggests that in observational settings that capture temperament impressions holistically, children's expressiveness affects other traits' behavioral displays. Twin models revealed genetic influences for most traits. Importantly, twin models revealed shared-environmental influences for negative affect and expressiveness, which modestly contributed to temperament consistency across ages. These findings shed light on temperament traits' interrelatedness and stress the importance of the shared environment to temperament development during middle childhood. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

There is growing interest in telomere length as an indicator of current and future health. Although early childhood is a period of rapid telomere attrition, little is known about the factors that influence telomere biology during this time. Adult research suggests that telomere length is influenced by psychological characteristics. This study's goal was to test associations among repeated measures of temperament and telomere length in a community sample of children (N = 602; 52% male, 73% non-Hispanic White, middle-to-high socioeconomic status) from infancy to age 3 years. Relative telomere length was assessed from DNA in saliva samples collected at infancy (M = 8.4 months), 2 years (M = 24.9 months), and 3 years (M = 37.8 months). Temperament was assessed via maternal report questionnaires administered at infancy (Infant Behavior Report Questionnaire-Revised) and ages 2 and 3 years (Early Childhood Behavior Questionnaire). Temperament was operationalized in two ways: using the established domains of negative affectivity, surgency/extraversion, and regulation/effortful control and using person-centered scores that identified three groups of children with similar profiles across domains (emotionally and behaviorally regulated; emotionally and behaviorally dysregulated; introverted and overcontrolled). Analyses revealed that greater regulation/effortful control was associated with longer telomere length across time points. Additionally, higher surgency/extraversion, beginning in infancy, was associated with decreased rate of telomere attrition. There were no sex differences in the relations between temperament and telomere measures. These findings suggest that, as early as infancy, temperament may influence telomere biology, with a potential protective effect of positive temperament characteristics on telomere erosion. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Temperamental inhibitory control is a foundational capacity for children's social, emotional, and behavioral development. Even though temperament is suggested to have a biological basis, the physiological indicators of inhibitory control remain unclear amid mixed empirical results. In this study, we leveraged a multicohort longitudinal design to examine resting respiratory sinus arrhythmia (RSA) as a physiological correlate of inhibitory control across the early and middle childhood years. Data were collected annually across four time points from cohorts of 4- (n = 150, M_age = 4.53; SD = 0.30; 49.7% female) and 8- (n = 150; M_age = 8.53; SD = 0.29; 49.7% female) year-old children and their caregivers. There were weak, albeit significant, associations between resting RSA and caregiver-reported inhibitory control in middle childhood but not in early childhood. A stronger association was found for older children when latent trait assessments of RSA and inhibitory control were derived from commonalities across the four annual assessments. We conclude that using repeated measures to extract latent trait scores increases power to detect potential physiological indicators of temperament. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Children's tendency to prefer rich to poor people and to view wealthy individuals more positively has been well-documented, but little is known about (a) the mechanisms underlying this "pro-wealth" bias and (b) the extent to which it holds across various social domains (e.g., friendships vs. school project partners). Using a mixed-methods approach, we examined the development of status-based social preferences in a socioeconomically diverse sample of children from Chinese American immigrant families (N = 169; 7-11 years; M_Age = 9.16 years, SD ± 1.05; 87 male, 82 female). We examined the development of these preferences in middle childhood, a period during which aspects of group membership and social stratification are salient, particularly for children of immigrants. Children exhibited preferences for a high-status child over a low-status child across three social domains (friendship, playdate, and school project). Children's open-ended responses explaining their preferences most commonly referenced status-based stereotypes (e.g., "He's more educated, he might know more about the topic") and personal loss or gain (e.g., "I'll get to play with his stuff"). Children higher in parent-rated effortful control exhibited fewer status-based preferences and were less likely to reference status-based stereotypes and personal loss or gain in their explanations. Together, these findings shed light on the complexity and nuance of children's pro-wealth bias, as well as the underlying forces that drive these social preferences. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

There is debate around offering ethnic studies to high school students. Ethnic studies connects learning to students' lives and analyzes the workings of racism to construct avenues toward equity. As the debate unfolds, it is critical to examine ethnic studies' implications for youth development and the mechanisms that link it to student outcomes. One of ethnic studies' long-stated goals is fostering students' critical consciousness. Critical consciousness refers to critical reasoning around inequality (critical reflection), motivation to challenge inequality (critical motivation), and action taken to disrupt inequality (critical action). Little research has examined youth critical consciousness development within ethnic studies-a consciousness-raising system. Consequently, this longitudinal mixed-methods study examines students' critical consciousness development in ethnic studies and sheds light on the contextual characteristics (i.e., critical school socialization) that foster critical consciousness. Analyses of 459 ninth-grade students' (52% girls, 4% nonbinary; 1% Asian, 1% Black, 4% multiracial, 64% Latinx, 7% Native American, 15% described their own race, 7% skipped the question; M_age = 13.92) survey data, and focus group data with 19 students, revealed that ethnic studies-enrolled students grew more in their critical reflection than nonenrolled students. However, the quantitative data demonstrated decreasing critical motivation among all students, whereas the qualitative data suggested emergent critical motivation among ethnic studies-enrolled students. Furthermore, critical school socialization and teacher pedagogy were key to ethnic studies consciousness-raising. Altogether, this study highlights that ethnic studies fosters youth critical consciousness-a worthwhile outcome that should be considered in policy debates about ethnic studies. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

This study examined how a firstborn child's empathy interacts with maternal emotional availability (EA) to predict later positive sibling relationships. The study included 108 families expecting a second child who also had a 10- to 45-month-old firstborn child (M = 24.6 months, SD = 7.42; 58 girls). Before the second-born child arrived, the firstborn child's empathic abilities were measured, and a mother-child play interaction was videotaped and coded for maternal EA. At 16-18 months postpartum, mothers completed questionnaires assessing the quality of the sibling relationship. Maternal EA moderated the link between the firstborn's cognitive and emotional empathy and the quality of the sibling relationship. Higher levels of emotional and cognitive empathy predicted better sibling relationships for children whose mothers were more emotionally available. Implications for early interventions are discussed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Racial-ethnic discrimination is a prevalent stressor for Mexican-origin individuals that potentiates health inequities in depressive symptoms. However, existing research has primarily focused on individual-level associations between discrimination and depressive symptoms, neglecting the interdependent nature within family systems. Little is known about how one family member's discriminatory experiences relate to the depressive symptoms of others. Although ethnoracial socialization may disrupt the link from discrimination to depressive symptoms, how different ethnoracial socialization practices operate and influence parents themselves have not been examined. This study examines the associations among discriminatory experiences, depressive symptoms, and ethnoracial socialization among 604 Mexican-origin adolescents and their parents from low-income families. The findings revealed intraindividual and interindividual discrimination-depressive symptoms associations. Parental ethnoracial socialization's role in the link varied over time, individuals, and practices. Mental health research and services should consider shared and nonshared experiences among family members and adopt personalized approaches to support different family members. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Respiratory sinus arrhythmia (RSA) inertia is the temporary dependency of RSA levels between consecutive epochs, which captures the epoch-to-epoch stickiness of RSA reactivity. Previous studies examining the developmental function of between-task RSA reactivity have yielded mixed findings and have often overlooked RSA reactivity within the task. The present study examined whether RSA inertia during a stress task was associated with subsequent changes in child psychopathology symptoms. To have a comprehensive understanding of the function of RSA reactivity, we tested whether RSA inertia interacted with between-task RSA reactivity to jointly predict changes in child psychopathology symptoms. Eighty-nine middle-to-high income Chinese parent-child dyads were recruited. Children (M_age = 8.77 years, SD = 1.80 years, 41 girls) participated in a 2-min resting phase and then a 4-min stress task (a public speaking task), during which RSA was continuously recorded in the lab. Parents (M_age = 39.27 years, SD = 3.53 years, 67 mothers) reported on children's psychopathology symptoms in the lab and again 9 months later. Children with heightened RSA inertia tended to exhibit increased externalizing symptoms 9 months later. Moreover, RSA inertia interacted with between-task RSA reactivity to predict subsequent changes in externalizing symptoms. Children with the combination of lower RSA inertia and larger between-task RSA decreases had the lowest externalizing symptoms, suggesting an adaptive RSA reactivity pattern. Heightened within-task RSA inertia as well as reduced between-task RSA reactivity may help to identify children at risk for subsequent psychopathology symptoms, aiding in early intervention efforts. (PsycInfo Database Record (c) 2024 APA, all rights reserved).