Berenice Anaya, Laura Bierstedt, Nora Tucker, Kristin A Buss, Vanessa LoBue, Koraly Pérez-Edgar
{"title":"Categorical and latent profile approaches to temperamental infant reactivity and early trajectories of socioemotional adjustment.","authors":"Berenice Anaya, Laura Bierstedt, Nora Tucker, Kristin A Buss, Vanessa LoBue, Koraly Pérez-Edgar","doi":"10.1037/dev0001679","DOIUrl":"10.1037/dev0001679","url":null,"abstract":"<p><p>This article examines the patterns, and consequences, of infant temperamental reactivity to novel sensory input in a large (<i>N</i> = 357; 271 in current analysis) and diverse longitudinal sample through two approaches. First, we examined profiles of reactivity in 4-month-old infants using the traditional theory-driven analytic approach laid out by Jerome Kagan and colleagues, and derived groups characterized by extreme patterns of negative reactivity and positive reactivity. We then used a theory-neutral, data-driven approach to create latent profiles of reactivity from the same infants. Despite differences in sample characteristics and recruitment strategy, we noted similar reactivity groups relative to prior cohorts. The current data-driven approach found four profiles: high positive, high negative, high motor, and low reactive. Follow-up analyses found differential predictions of internalizing, externalizing, dysregulation, and competence trajectories across 12, 18, and 24 months of life based on 4-month reactivity profiles. Findings are discussed in light of the initial formulation of early reactivity by Kagan and the four decades of research that has followed to refine, bolster, and expand on this approach to child-centered individual differences. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2071-2083"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11228130/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139378588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elizabeth K Wood, Colt M Halter, Evan Byrne, Zachary D Baron, Michael Forvil, Leah Marett, Ellie Smith, Elia Hafen, Emily Hepworth, Miranda Johnson, Stephen J Suomi, J Dee Higley, William W Thompson
{"title":"Behavioral inhibition in a translational nonhuman primate model: A pilot study of Kagan's behavioral inhibition paradigm modified for use in infant rhesus macaques (Macaca mulatta).","authors":"Elizabeth K Wood, Colt M Halter, Evan Byrne, Zachary D Baron, Michael Forvil, Leah Marett, Ellie Smith, Elia Hafen, Emily Hepworth, Miranda Johnson, Stephen J Suomi, J Dee Higley, William W Thompson","doi":"10.1037/dev0001652","DOIUrl":"10.1037/dev0001652","url":null,"abstract":"<p><p>Behavioral inhibition (BI), a temperamental trait first described by Jerome Kagan, is characterized by wariness to unfamiliar persons and novel situations. BI is a moderately stable trait, with biological and genetic underpinnings. Kagan's methodology for assessing BI is widely used in humans. Although this paradigm could be readily translated for use in nonhuman primates, thereby increasing generalizability from nonhuman primates to humans and fortifying evidence that BI is evolutionarily conserved, researchers have not done so. To address this, this study utilized a modified version of Kagan's paradigm to assess behaviors and biological markers of BI in nonhuman primates. Over the first 5 weeks of life, nursery-reared rhesus monkeys (<i>Macaca mulatta; N</i> = 12) were rated using the standardized Infant Behavior Assessment Scale for nonhuman primates on measures related to BI (consolability, irritability, struggle, and predominant state). Three months later, behavioral assessments were made in relation to a novel playroom, an unfamiliar peer, and a variety of attention-grabbing, unfamiliar stimuli, followed by the introduction of a human stranger. Behaviors from Kagan's studies of BI in toddlers (freezing, exploration, and latency to approach) and physiological measures related to BI (heart rate) were assessed. Random effects models showed that subjects rated high in temperamental BI spent less time exploring the environment and socializing with peers and more time freezing (an indication of anxiety in rhesus monkeys). These findings suggest that Kagan's paradigm is readily adapted for use in nonhuman primates and support the utility of rhesus monkeys as translational models for assessing the causes and consequences of human BI. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2038-2051"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11260904/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139514090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How biology shapes the development of shyness within specific contexts: A longitudinal, cross-lagged investigation.","authors":"Raha Hassan, Louis A Schmidt","doi":"10.1037/dev0001656","DOIUrl":"10.1037/dev0001656","url":null,"abstract":"<p><p>Shyness is a temperamental trait that refers to fear and wariness in the face of social novelty and is known to have a biological basis. One proposed physiological correlate of shyness has been the change in respiratory sinus arrhythmia (RSA) from baseline to a stressor. However, past research linking shyness and RSA change has been mixed, which may be, in part, due to a failure to carefully consider the context under which RSA change is measured and the directionality of relations. Using a longitudinal design and cross-lagged analysis (<i>N</i> = 103, 52 girls), we examined parent-reported shyness and RSA change during a stranger approach task (social stressor) and a locked box task (nonsocial stressor) at ages 3 (<i>M</i><sub>age</sub> at Time 1 = 3.50 years, <i>SD</i><sub>age</sub> = 0.19 years) and 4 (<i>M</i><sub>age</sub> at Time 2 = 4.76 years, <i>SD</i><sub>age</sub> = 0.38). Cardiac vagal withdrawal during the stranger approach task, but not during the frustration task, at age 3 positively predicted shyness at age 4. Shyness at age 3 did not predict cardiac vagal change in either context at age 4. We also found that changes in RSA measured during the frustration task were stable across time, but changes in RSA measured during the stranger approach task were not stable across time, suggesting a developmental change in physiological regulatory systems to social threat. These results suggest that, although biology may come first in shaping children's behavior, this relation depends critically on the context and the incentives in the child's environment. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2178-2188"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41216455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Self-regulation in elementary school: Do teacher-reported effortful control and directly assessed executive function codevelop?","authors":"Emily M Weiss","doi":"10.1037/dev0001658","DOIUrl":"10.1037/dev0001658","url":null,"abstract":"<p><p>Self-regulation (SR) is a central developmental task of early childhood and is considered essential for children's success during elementary school. It has typically been conceptualized as effortful control (EC) or executive function (EF), drawing respectively on research traditions in temperament and cognitive development. These aspects of SR are theorized to emerge from an intertwined developmental process, but the nature of their relation throughout elementary school has not been established. In particular, it is not known whether ratings given by teachers based on behavioral observations align with those directly assessed via novel performance tasks. This article addresses this gap in the knowledge by examining the codevelopment of EC and EF with regard to intraindividual trajectories of change. Drawing on a national sample (<i>N</i> = 8,742) from the Early Childhood Longitudinal Study-Kindergarten Cohort of 2010-2011, two longitudinal modeling approaches (parallel-process latent growth curves with structured residuals, Curran et al., 2014; multidimensional growth mixture models, Wickrama et al., 2021) were applied to examine children's SR between second and fifth grade. Overall, results do not reveal a systematic codevelopmental relation between EC and EF when accounting for intraindividual processes. Findings are discussed with regard to developmental theory and application. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2101-2115"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49693217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rebecca F Schwarzlose, Courtney A Filippi, Michael J Myers, Jennifer Harper, M Catalina Camacho, Tara A Smyser, Cynthia E Rogers, Joshua S Shimony, Barbara B Warner, Joan L Luby, Deanna M Barch, Daniel S Pine, Christopher D Smyser, Nathan A Fox, Chad M Sylvester
{"title":"Neonatal neural responses to novelty related to behavioral inhibition at 1 year.","authors":"Rebecca F Schwarzlose, Courtney A Filippi, Michael J Myers, Jennifer Harper, M Catalina Camacho, Tara A Smyser, Cynthia E Rogers, Joshua S Shimony, Barbara B Warner, Joan L Luby, Deanna M Barch, Daniel S Pine, Christopher D Smyser, Nathan A Fox, Chad M Sylvester","doi":"10.1037/dev0001654","DOIUrl":"10.1037/dev0001654","url":null,"abstract":"<p><p>Behavioral inhibition (BI), an early-life temperament characterized by vigilant responses to novelty, is a risk factor for anxiety disorders. In this study, we investigated whether differences in neonatal brain responses to infrequent auditory stimuli relate to children's BI at 1 year of age. Using functional magnetic resonance imaging (fMRI), we collected blood-oxygen-level-dependent (BOLD) data from <i>N</i> = 45 full-term, sleeping neonates during an adapted auditory oddball paradigm and measured BI from <i>n</i> = 27 of these children 1 year later using an observational assessment. Whole-brain analyses corrected for multiple comparisons identified 46 neonatal brain regions producing novelty-evoked BOLD responses associated with children's BI scores at 1 year of age. More than half of these regions (<i>n</i> = 24, 52%) were in prefrontal cortex, falling primarily within regions of the default mode or frontoparietal networks or in ventromedial/orbitofrontal regions without network assignments. Hierarchical clustering of the regions based on their patterns of association with BI resulted in two groups with distinct anatomical, network, and response-timing profiles. The first group, located primarily in subcortical and temporal regions, tended to produce larger early oddball responses among infants with lower subsequent BI. The second group, located primarily in prefrontal cortex, produced larger early oddball responses among infants with higher subsequent BI. These results provide preliminary insights into brain regions engaged by novelty in infants that may relate to later BI. The findings may inform understanding of anxiety disorders and guide future research. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2062-2070"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11096262/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136399826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eliala A Salvadori, Cristina Colonnesi, Frans J Oort, Daniel S Messinger
{"title":"Predicting pointing from early socioemotional communication with mothers, fathers, and strangers through the lens of temperamental reactivity.","authors":"Eliala A Salvadori, Cristina Colonnesi, Frans J Oort, Daniel S Messinger","doi":"10.1037/dev0001671","DOIUrl":"10.1037/dev0001671","url":null,"abstract":"<p><p>Socioemotional and referential communication are primary expressions of interpersonal engagement in infancy and beyond. Early socioemotional communication in dyadic interactions may form a foundation for triadic referential communication and gesture production, yet the role of temperament in moderating their association has not been examined. We investigated whether early socioemotional communication behaviors, and infant temperamental reactivity, were associated with later pointing production. Participants were 51 infants (45% girls) and both their parents (86.5% Dutch). Early infant socioemotional communication (production of smile, vocalizations, and gaze) was observed during separate home-based face-to-face interactions with mothers, fathers, and strangers at 4 and 8 months. At both ages, mothers and fathers reported on infant temperamental surgency and negative affectivity, and overall means were calculated. Referential communication (declarative pointing) was measured during structured lab-based observations at 12 and 15 months. Socioemotional and referential communication behaviors were microanalytically coded second by second. Poisson multilevel regression analyses indicated interaction effects between temperament and smile, vocalizations, and gazes to the adult's face with each partner in predicting pointing. High levels of infant temperamental surgency tended to enhance positive associations between early socioemotional communication behaviors with mothers and fathers and pointing. By contrast, high levels of negative affectivity tended to dampen associations between early communication behaviors with strangers and pointing. Results highlight the importance of infant socioemotional communication with diverse partners and the moderating role of temperamental reactivity in predicting referential communication. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2127-2143"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139378591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Or Dagan, Carlo Schuengel, Marije L Verhage, Sheri Madigan, Glenn I Roisman, Marinus Van IJzendoorn, Marian Bakermans-Kranenburg, Robbie Duschinsky, Abraham Sagi-Schwartz, Jean-François Bureau, Rina D Eiden, Brenda L Volling, Maria S Wong, Sarah Schoppe-Sullivan, Ora Aviezer, Geoffrey L Brown, Julie Reiker, Sarah Mangelsdorf, R M Pasco Fearon, Kristin Bernard, Mirjam Oosterman
{"title":"Attachment relationship quality with mothers and fathers and child temperament: An individual participant data meta-analysis.","authors":"Or Dagan, Carlo Schuengel, Marije L Verhage, Sheri Madigan, Glenn I Roisman, Marinus Van IJzendoorn, Marian Bakermans-Kranenburg, Robbie Duschinsky, Abraham Sagi-Schwartz, Jean-François Bureau, Rina D Eiden, Brenda L Volling, Maria S Wong, Sarah Schoppe-Sullivan, Ora Aviezer, Geoffrey L Brown, Julie Reiker, Sarah Mangelsdorf, R M Pasco Fearon, Kristin Bernard, Mirjam Oosterman","doi":"10.1037/dev0001677","DOIUrl":"10.1037/dev0001677","url":null,"abstract":"<p><p>A growing body of research suggests that, compared with single parent-child attachment relationships, child developmental outcomes may be better understood by examining the configurations of child-mother and child-father attachment relationships (i.e., attachment networks). Moreover, some studies have demonstrated an above-chance level chance of concordance between the quality of child-mother and child-father attachment relationships, and child temperament has been offered as a plausible explanation for such concordance. To assess whether temperament plays a role in the development of different attachment network configurations, in this preregistered individual participant data meta-analysis we tested the degree to which the temperament dimension of negative emotionality predicts the number of secure, insecure-avoidant, insecure-resistant, and disorganized attachment relationships a child has with mother and father. Data included in the linear mixed effects analyses were collected from seven studies sampling 872 children (49% female; 83% White). Negative emotionality significantly predicted the number of secure (<i>d</i> = -0.12) and insecure-resistant (<i>d</i> = 0.11), but not insecure-avoidant (<i>d</i> = 0.04) or disorganized (<i>d</i> = 0.08) attachment relationships. Nonpreregistered exploratory analyses indicated higher negative emotionality in children with insecure-resistant attachment relationships with both parents compared to those with one or none (<i>d</i> = 0.19), suggesting that temperament plays a small yet significant role in child-mother/child-father insecure-resistant attachment relationships concordance. Taken together, results from this study prompt a more in-depth examination of the mechanism underlying the small yet significantly higher chance that children with increased negative emotionality have for developing multiple insecure-resistant attachment relationships. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2144-2156"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139736410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexys S Murillo, Sierra Clifford, Cheuk Hei Cheng, Leah D Doane, Mary C Davis, Kathryn Lemery-Chalfant
{"title":"Development of temperament types from infancy to adolescence: Genetic and environmental influences with an economically and racially/ethnically diverse sample.","authors":"Alexys S Murillo, Sierra Clifford, Cheuk Hei Cheng, Leah D Doane, Mary C Davis, Kathryn Lemery-Chalfant","doi":"10.1037/dev0001828","DOIUrl":"10.1037/dev0001828","url":null,"abstract":"<p><p>Kagan theorized biologically based temperament types that are present in infancy, stable across development, and essential for understanding individual differences. Despite evidence, temperament research remains focused on a few prominent dimensions of temperament, without adequately addressing covariance among dimensions and temperament types. Using longitudinal twin data, we took a person-centered statistical approach to identify temperament types and examined continuity and change across five developmental periods (<i>N</i><sub>infancy</sub> = 602; <i>N</i><sub>toddlerhood</sub> = 522; <i>N</i><sub>early childhood</sub> = 390; <i>N</i><sub>late childhood</sub> = 718; Nearly adolescence = 700). We then examined the genetic and environmental etiology of temperament types. Twins were boys and girls (51-53% female), primarily Hispanic/Latinx (23-30%) and non-Hispanic/Latinx White (56-63%), and from socioeconomically diverse families (28-38% near-or-below the poverty line). Using latent profile analysis, we identified three temperament types at each age characterized by negative reactivity and dysregulation, positive reactivity and strong self-regulation, and moderate reactivity and regulation. Latent transition analyses revealed considerable continuity in membership type for \"negative dysregulated\" beginning in infancy, log odds = 1.58 (<i>SE</i> = .65) to 3.16 (<i>SE</i> = .77), <i>p</i> < .01, of remaining relative to transitioning to \"typical expressive\", and \"positive well-regulated\" beginning in early childhood, log odds = 1.41 (<i>SE</i> = .56) to 2.25 (<i>SE</i> = .47), <i>p</i> < .05. Twin analyses revealed moderate heritability and a consistent role of the shared environment on positive well-regulated, with negative dysregulated and typical expressive also moderately heritable with the shared environment being important at some ages. Findings support the presence of theorized biologically based temperament types that develop rapidly in infancy and toddlerhood and provide a foundation for the study of individual differences and risk and resilience processes across the lifespan. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2200-2219"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142019151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The developmental context of culture: Reflections on the contributions and legacy of Jerome Kagan.","authors":"Charles M Super","doi":"10.1037/dev0001645","DOIUrl":"10.1037/dev0001645","url":null,"abstract":"<p><p>Although the path of Kagan's career led him inexorably toward biology, in the few years between his first benchmark publication on infancy and his later focus on temperament, he turned to other cultures in order to evaluate emerging insights about early development, namely, that major developmental transitions in behavior are maturational products. These forays contributed profoundly to our current understanding of culture and human development and inspired several of his students to focus their own careers on human development <i>in</i> culture, or, turned around, what we might call the developmental context of culture. Drawing largely on Kagan's own writings, this essay attempts to understand what the cross-cultural work meant to him and its lasting influence on his students. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"1971-1977"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71427961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jishyra Serrano, Sean Womack, Catherine Yount, Sadia Firoza Chowdhury, Molly Arnold, Jessica Brunner, Zoe Duberstein, Emily S Barrett, Kristin Scheible, Richard K Miller, Thomas G O'Connor
{"title":"Prenatal maternal immune activation predicts observed fearfulness in infancy.","authors":"Jishyra Serrano, Sean Womack, Catherine Yount, Sadia Firoza Chowdhury, Molly Arnold, Jessica Brunner, Zoe Duberstein, Emily S Barrett, Kristin Scheible, Richard K Miller, Thomas G O'Connor","doi":"10.1037/dev0001718","DOIUrl":"10.1037/dev0001718","url":null,"abstract":"<p><p>Fear reactivity is an early emerging temperament trait that predicts longer term behavioral and health outcomes. The current analysis tests the hypothesis, an extension of prior research on maternal immune activation (MIA), that the prenatal maternal immune system is a reliable predictor of observed fear reactivity in infancy. The analysis is based on a prospective longitudinal cohort study that collected data from the first trimester and conducted observational assessments of temperament at approximately 12 months of age (<i>n</i> = 281 infants). MIA was assessed from immune biomarkers measured in maternal blood at each trimester; infant temperament was assessed using the Laboratory Temperament Assessment Battery assessment at 12 months; covariates included family and sociodemographic factors. Patterns of inflammatory markers across gestation reliably predicted observed temperament: elevated prenatal MIA was associated with high fear reactivity to novel stimuli. The findings provide novel evidence of prenatal origins of fear reactivity and suggest developmental mechanisms that may underlie early emerging individual differences in child temperament. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":48464,"journal":{"name":"Developmental Psychology","volume":" ","pages":"2052-2061"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11436485/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140307341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}