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Why is instructional gesture ineffective in some contexts? And what is it about learners that predicts whether they will learn from gestures? This between-subjects linear measurement training study compares gesture instruction to two controls-operant action and transient action-in a diverse sample of first-grade students (N = 174, M age  = 7.01 years; N female  = 84; N male  = 90, 10% Latinx-identified; 70% White; 6% Black; 6% Asian; 18% multiple racial categories, M income  = $59,750, SD income  ≈ $25,000; data collected 03/16-03/19). Results show that instructor-manipulated gestures may be less effective than demonstrative actions in part because they are iterative and do not leave a lasting trace. Verbal working memory, but not spatial, positively predicted an ability to learn from gesture and transient action in children with the lowest context knowledge., (© 2024 The Authors. Child Development published by Wiley Periodicals LLC on behalf of Society for Research in Child Development.)

Latent class logistic regression analysis was used to investigate sources of individual differences in profiles of prosocial behavior. Eighty-seven 18-month-olds were observed in tasks assessing sharing with a neutral adult, instrumentally helping a neutral adult, and instrumentally helping a sad adult. Maternal mental state language (MSL) and maternal sensitivity were also assessed. Despite differing motivational demands across tasks, we found consistency in children's prosocial behavior with three latent classes: no prosocial behavior, moderate prosocial behavior, and frequent instrumental helping across emotional situations. Maternal sensitivity, MSL, and their interaction predicted toddlers' membership in the classes. These findings evidence moderate consistency in early prosocial behaviors and suggest that these capacities are motivated in early relationships with caregivers.

Deficits in numerical magnitude perception characterize the mathematics learning disability developmental dyscalculia (DD), but recent studies suggest the relation stems from inhibitory control demands from incongruent visual cues in the nonsymbolic number comparison task. This study investigated the relation among magnitude perception during differing congruency conditions, executive function, and mathematics achievement measured longitudinally in children (n = 448) from ages 4 to 13. This relation was investigated across achievement groups and as it related to mathematics across the full range of achievement. Only performance on incongruent trials related to achievement. Findings indicate that executive function in a numerical context, beyond magnitude perception or executive function in a non-numerical context, relates to DD and mathematics across a wide range of achievement. [ABSTRACT FROM AUTHOR]

This study of 195 (108 boys) children seen twice during infancy (Time 1: 4.12 months; Time 2: 14.42 months) aimed to investigate the associations between and infant predictors of executive function (EF) at 14 months. Infants showed high levels of compliance with the EF tasks at 14 months. There was little evidence of cohesion among EF tasks but simple response inhibition was related to performance on two other EF tasks. Infant attention (but not parent-rated temperament) at 4 months predicted performance on two of the four EF tasks at 14 months. Results suggest that EF skills build on simpler component skills such as attention and response inhibition. [ABSTRACT FROM AUTHOR]

This study used a nationally representative sample of African American and Caribbean Black adolescent females to examine the relation between perceived pubertal timing relative to peers and discriminatory experiences. Participants included the 607 girls who participated in the National Survey of American Life-Adolescent (NSAL-A), and ranged in age from 13 to 17. Most African American girls perceived their development as on-time relative to their same-aged peers; whereas the majority of Caribbean Black girls perceived their development as earlier than their same-aged peers. The results indicated that girls who perceived that their pubertal development was earlier than their same-aged peers reported more general and racial discrimination experiences. [ABSTRACT FROM AUTHOR]

This article examined links between 4- and 6-year-olds' (n = 101; Mage  = 5.12 years, SD = 0.67; 53% male) ability to distinguish moral and conventional transgressions along different criteria and teacher ratings of proactive and reactive aggression. Latent difference score modeling revealed that moral transgressions were judged more unacceptable and wrong independent of rules and authority than conventional violations, but significant variability in moral-conventional distinctions was also observed. Proactive aggression was associated with less-and reactive aggression was associated with greater-differentiation in moral and conventional concepts. Proactive aggression was not associated with deficits in moral knowledge when other common assessments of early moral understanding were employed, highlighting the importance of using theoretically informed measures of moral judgments and aggression. [ABSTRACT FROM AUTHOR]

The present research investigated the developmental trajectory of infants' fairness expectations from 6 to 15 months of age (N = 150). Findings revealed a developmental transition in infants' fairness expectations between 6 and 12 months, as indicated by enhanced visual attention to unfair outcomes of resource distribution events (a 3:1 distribution) relative to fair outcomes (a 2:2 distribution). The onset of naturalistic sharing behavior predicted infants' fairness expectations at transitional ages. Beyond this period of developmental transition, the presence of siblings and infants' prompted giving behavior predicted individual differences in infants' fairness concerns. These results provide evidence for the role of experience in the acquisition of fairness expectations and reveal early individual differences in such expectations. [ABSTRACT FROM AUTHOR]

The study examined the etiology of individual differences in early drawing and of its longitudinal association with school mathematics. Participants (N = 14,760), members of the Twins Early Development Study, were assessed on their ability to draw a human figure, including number of features, symmetry, and proportionality. Human figure drawing was moderately stable across 6 months (average r = .40). Individual differences in drawing at age 4½ were influenced by genetic (.21), shared environmental (.30), and nonshared environmental (.49) factors. Drawing was related to later (age 12) mathematical ability (average r = .24). This association was explained by genetic and shared environmental factors that also influenced general intelligence. Some genetic factors, unrelated to intelligence, also contributed to individual differences in drawing. [ABSTRACT FROM AUTHOR]

Variability in children's language acquisition is likely due to a number of cognitive and social variables. The current study investigated whether individual differences in statistical learning (SL), which has been implicated in language acquisition, independently predicted 6- to 8-year-old's comprehension of syntax. Sixty-eight (N = 68) English-speaking children completed a test of comprehension of four syntactic structures, a test of SL utilizing nonlinguistic visual stimuli, and several additional control measures. The results revealed that SL independently predicted comprehension of two syntactic structures that show considerable variability in this age range: passives and object relative clauses. These data suggest that individual differences in children's capacity for SL are associated with the acquisition of the syntax of natural languages. [ABSTRACT FROM AUTHOR]

Little is known about the underlying causes and developmental patterns of stability and change in early reading abilities. In a longitudinal study of twins (n=4,291 pairs), individual differences in reading achievement assessed by teachers using U.K. National Curriculum (NC) criteria showed substantial heritabilities at ages 7, 9, and 10 years (.57-.67) and modest shared environmental influences (.10-.17). Stability in NC scores was primarily mediated genetically. There was also evidence for age-specific genetic influences at each age. Genetic influences on reading are substantial and stable during the elementary school years despite the shift from "learning to read" to "reading to learn." [ABSTRACT FROM AUTHOR]

This multi-method study sought to identify parameters of developmental change and stability of child reaction patterns to interparental conflict in the context of family relations in a sample of 223 6-year-old children and their parents followed over the course of one year. Consistent with the sensitization hypothesis, interparental withdrawal and hostility each consistently and uniquely predicted child distress reactions to conflict even after analytically controlling for parental warmth. Associations were found across multiple domains of child responding (i.e., overt negative affect, subjective negative affect, internal representations) and both concurrent and prospective, autoregressive analyses. Results of the autoregressive path analyses indicated moderate stability in each of the domains of conflict reactivity over the 1-year longitudinal period. [ABSTRACT FROM AUTHOR]

Peer relations across 2 contexts (in school and after school) were examined for 577 participants, approximately 12 years old, from 3 middle schools in Milan, Italy. The primary research questions were: Do peer networks from different contexts uniquely contribute to explaining variance in individual behavior? Do measures of peer preference and peer network inclusion across contexts uniquely contribute to explaining individual depressive symptoms? Structural equation models showed that both the in-school and the after-school peer networks uniquely contributed to explaining variance in 2 types of individual problem behavior (in-school problem behavior, after-school delinquency), and that similarity with the 2 peer networks varied according to behaviors specific to each context and across gender. Finally, both in-school and after-school peer network inclusion contributed to explaining variance in depressive symptoms, after controlling for classroom peer preference. [ABSTRACT FROM AUTHOR]

The hypothesis is tested that adolescent boys' (mean age of 12.8 years) intrasexual rough-and-tumble play (R&T) is used for dominance and intersexual R&T is used to establish heterosexual relationships. In Study 1, boys' observed R&T was related to both dominance and aggression. In the first half of the school year, R&T occurred primarily between males, possibly to establish dominance. In the second half of the year, both boys and girls engaged in R&T, possibly to establish heterosexual relationships. Counter to the hypothesis, observed aggression increased across the year. In Study 2, youngsters viewed taped R&T bouts in which they were participants or nonparticipants. Participant, more than nonparticipant, males saw R&T as related to dominance whereas participant, more than nonparticipant, females saw it as playful. [ABSTRACT FROM AUTHOR]

This study examined individual differences in 4-year-old children's (N = 60) expression of the self-conscious emotions of embarrassment and shame and their relation to differences in cortisol response to stress. Results indicated the presence of two different types of embarrassment--one that reflected negative evaluation of the self, and the other a nonevaluative type that reflected simply exposure of the self when the individual was the object of attention of others. Results also indicated a relation between a higher cortisol response to stress and the greater expression of the self-conscious emotions of evaluative embarrassment and shame that reflected negative self-evaluation. [ABSTRACT FROM AUTHOR]

This study was conducted to test whether group identification (importance of the group to the individual) covaried with individual-group similarity on problem behavior; and whether group identification moderated peer group influence on the individual's development of delinquent behavior across a 1-year period. The level of reciprocated nominations within the individual's self-nominated group was controlled for in all analyses. Participants were 190 sixth and seventh graders (during the first year of the study) from the north of Italy. Level of reciprocated nominations within the group, but not identification, was found to covary with individual-group behavioral similarity (group behavior interacted with reciprocity of group nominations in predicting individual behavior). Group identification, but not reciprocated nominations, was found to moderate peer group influence on the individual's change in delinquent behavior, across 1 year. The individual's peer status within the classroom, level of reciprocated nominations, and gender all were related to the individual's level of group identification. Results are discussed in terms of understanding peer group influence on the individual. [ABSTRACT FROM AUTHOR]

The degree to which individual differences in child-parent attachment were mediated by genetic, shared environmental, and nonshared environmental influences was investigated. One hundred and ten preschool-aged twin pairs (N = 220) were assessed in the Strange Situation and coded using conventional four-way classifications and a continuous measure of attachment security. The degree of sibling similarity in attachment was substantial, with an overall concordance rate of 67% at the secure/insecure level. The degree of concordance was equally high in monozygotic and dizygotic twin pairs, 70% and 64%, respectively, suggesting little genetic influence but a moderate degree of discordance. Twin similarity on the continuous measure of attachment security was r(57) = .48 and r(53) = .38 for monozygotic and dizygotic twin pairs, respectively, also consistent with a modest role for genetic influence but a significant effect for shared and nonshared environment. The implications for genetic influences on the environment and for understanding nonshared and shared environmental influences are discussed. [ABSTRACT FROM AUTHOR]

This research examined the relation between individual differences in inhibitory control (IC; a central component of executive functioning) and theory-of-mind (ToM) performance in preschool-age children. Across two sessions, 3- and 4-year-old children (N = 107) were given multitask batteries measuring IC and ToM. Inhibitory control was strongly related to ToM, r = .66, p < .001. This relation remained significant controlling for age, gender, verbal ability, motor sequencing, family size, and performance on pretend-action and mental state control tasks. Inhibitory tasks requiring a novel response in the face of a conflicting prepotent response (Conflict scale) and those requiring the delay of a prepotent response (Delay scale) were significantly related to ToM. The Conflict scale, however, significantly predicted ToM performance over and above the Delay scale and control measures, whereas the Delay scale was not significant in a corresponding analysis. These findings suggest that IC may be a crucial enabling factor for ToM development, possibly affecting both the emergence and expression of mental state knowledge. The implications of the findings for a variety of executive accounts of ToM are discussed. [ABSTRACT FROM AUTHOR]

Three studies were conducted to replicate and extend Dweck's findings regarding young children's responses to challenging achievement situations. Dweck's dichotomous helplessness classification system (i.e., task choice, task choice reason) was replicated with kindergartners, n = 235 (50% male), and first graders, n = 70 (46% male). To test whether individual differences in young children's responses to challenging situations are stable over time, 1- and 5-year follow-ups of the kindergartners were conducted. On the basis of children's responses on age-appropriate behavioral tasks, a composite of cognitive, behavioral, and affective helplessness indices predicted helplessness at 1 and 5 years later, n = 114 (50% male), above and beyond kindergarten task ability and gender, p<.05. Kindergarten helplessness predicted teacher ratings of children's helplessness 5 years later as well, p<.05. The implications of these findings for early intervention are discussed. [ABSTRACT FROM AUTHOR]

This commentary elaborates on the basic thesis developed by Rothbaum, Pott, Azuma, Miyake, and Weisz and underscores the significance of the co-constructive process of the self and social relationship. Implications for future cultural psychological inquiry in this area are discussed. [ABSTRACT FROM AUTHOR]

A fruitful way to build upon French-language research on development of analogical and propositional processes in logical reasoning tasks is to use dynamic systems tools to describe and analyze relevant developmental pathways. Issues to address include (1) the characteristics of developmental transitions, such as hysteresis; (2) the nature of growth processes, such as hierarchical development or predator-prey interactions; and (3) the construction of effective scales for measuring change in logical reasoning. [ABSTRACT FROM AUTHOR]

The neo-Piagetian research on individual differences in cognitive development reviewed by Larivée, Normandeau, and Parent suggests that Piaget's theory can be used to explain variability in development. My commentary explores this question further through a discussion of two additional sources of variation in children's cognitive development: social-emotional context and cultural meanings. [ABSTRACT FROM AUTHOR]

Ninety-seven children aged 4-11 (49 males, 48 females, mostly White) were given the opportunity to improve their problem-solving performance by devising and implementing a novel cognitive offloading strategy. Across two phases, they searched for hidden rewards using maps that were either aligned or misaligned with the search space. In the second phase, maps were presented on rotatable turntables, thus allowing children to manually align all maps and alleviate mental rotation demand. From age six onwards, children showed strong evidence of both mentally rotating misaligned maps in phase 1 and manually aligning them in phase 2. Older children used this form of cognitive offloading more frequently, which substantially improved performance and eliminated the individual differences observed in phase 1., (© 2021 The Authors. Child Development © 2021 Society for Research in Child Development.)

The issue of whether there is consistency in prosocial dispositions was examined with a longitudinal data set extending from ages 4 to 5 years into early adulthood (N = 32). Spontaneous prosocial behaviors observed in the preschool classroom predicted actual prosocial behavior, other- and self-reported prosocial behavior, self-reported sympathy, and perspective taking in childhood to early adulthood. Prosocial behaviors that were not expected to reflect an other-orientation (i.e., low cost helping and compliant prosocial behavior) generally did not predict later prosocial behavior or sympathy. Sympathy appeared to partially mediate the relation of early spontaneous sharing to later prosocial dispositions. The results support the view that there are stable individual differences in prosocial responding that have their origins in early childhood. [ABSTRACT FROM AUTHOR]

43 children were observed in play with "best available friends" at 2 and again at 5 years of age. An arousing stimulus, an angry interaction between adults, was introduced during play sessions to increase the likelihood of elicitation of aggressive patterns. Dimensions of physical aggression at age 2 (e.g., object-related aggression, bodily aggression) predicted dimensions of children's physical aggression at age 5. However, substantial sex differences in the stability of aggression were found. Among boys, the disposition to engage in physical aggression was highly stable, with correlations ranging as high as r = .76. Certain dimensions of physical aggression at age 2 were also positively associated with verbal aggression at age 5. Fewer and more modest correlations were found among girls. The frequency of aggression, particularly bodily aggression (e.g., hitting, pushing), initiations of aggression, and the average length of aggression episodes, decreased between 2 and 5 years of age. These results indicate that relative aggressiveness tends to remain stable despite declines in the frequency of aggressive behavior between 2 and 5 years of age. [ABSTRACT FROM AUTHOR]

Developmental behavioral genetics is the study of genetic and environmental influences on individual differences in behavioral development. The interdiscipline offers exciting possibilities for research in both child development and behavioral genetics. In this prelude to a special section on developmental behavioral genetics, the potentialities of the interdiscipline are discussed and an overview of the articles that follow is presented. [ABSTRACT FROM AUTHOR]

The study investigated the relationship between the attainment of a Piagetian formal operational concept (proportion) and personal characteristics in a sample of 117 Ss aged 10-12 years. A first analysis of the correlations between proportionality and the 22 other assessed variables indicated that a general ability factor could account for several significant associations among variables. As expected, intelligence significantly corèelated with the Piagetian concept. A stepwise multiple regression characterized the high scorer on the proportionality test as follows: (a) he is active and quick to respond, (b) he is able to develop a systematic method of reasoning, (c) he is able to generate original ideas, (d) he is rated lower on discipline than his average peer, (e) he frequently has doubts about his own capacities, and (f) he is able to initiate activities when left alone in a school situation. Piaget's argument tying together activity and cognition is supported by the results: children demonstrating more active patterns of behavior within their physical and social environment develop faster and master concepts earlier. [ABSTRACT FROM AUTHOR]

This study used latent growth curve modeling to identify normative development and individual differences in the developmental patterns of shyness and anger/frustration across childhood. This study also examined the impacts of maternal intrusiveness and frontal electroencephalogram (EEG) asymmetry at age 4 on the developmental patterns of shyness and anger/frustration. 180 children (92 boys, 88 girls; M age  = 4.07 years at baseline; 75.6% White, 18.3% Black, 6.1% multiracial/other) participated in the study. Normative development included significant linear decreases in shyness and anger/frustration. Individual variation existed in the developmental patterns. Children with left frontal EEG asymmetry showed a faster decreasing pattern of shyness. Children who experienced higher maternal intrusiveness and had left frontal EEG asymmetry showed a slower decreasing pattern of anger/frustration., (© 2021 The Authors. Child Development © 2021 Society for Research in Child Development.)

The Wechsler Preschool and Primary Scale of Intelligence, 4th ed. includes two measures of working memory normed on children 2;6-7;7. The present analyses of the typically developing children (N = 1,591, 812 female, 779 male, with an ethnic distribution approximating the United States) provide new, theoretically important information about these working memory tasks, Picture Memory and Zoo Locations. These new analyses establish developmental trends, individual-difference properties, and cognitive task properties. They show comparable developmental trends for the two tasks, but Picture Memory picks up more individual-difference variation and is more sensitive to knowledge. This analysis of normed tasks starting very young makes possible new methods for research on the early stages of childhood working memory development, about which little is currently known., (© 2021 The Authors. Child Development © 2021 Society for Research in Child Development.)

Fraction knowledge and algebraic skill are closely linked. Algebra is a gatekeeper for advanced courses (Booth & Newton, 2012; Brown & Quinn, 2007). This study uses the person-centered approach of latent profile analysis to examine individual differences in middle schoolers' (N = 350) algebra performance at the end of the year (EOY). The relative importance of a range of fraction skills is considered in predicting the likelihood of displaying a particular profile of EOY algebra knowledge, measured by feature knowledge, equation encoding, equation solving, and word-problem skills. Notably, fraction number line estimation did not predict algebra performance on any of the four measures. Fraction arithmetic at the beginning of the year is most predictive of displaying the highest performing EOY algebra profile., (© 2021 The Authors. Child Development © 2021 Society for Research in Child Development.)

Studies of developmental trajectories of depression are important for understanding depression etiology. Existing studies have been limited by short time frames and no studies have explored a key factor: differential patterns of responding to life events. This article introduces a novel analytic technique, growth mixture modeling with structured residuals, to examine the course of youth depression in a large, prospective cohort (N = 11,641, ages 4-16.5, 96% White). Age-specific critical points were identified at ages 8 and 13 where depression symptoms spiked for a minority of children. Most depression risk was due to dynamic responses to environmental events, drawn not from a small pool of persistently depressed children, but a larger pool of children who varied across higher and lower symptom levels., (© 2021 Society for Research in Child Development.)