Number gestures predict learning of number words

When asked to explain their solutions to a problem, children often gesture and, at times, these gestures convey information that is different from the information conveyed in speech. Children who produce these gesture‐speech “mismatches” on a particular task have been found to profit from instruction on that task. We have recently found that some children produce gesture‐speech mismatches when identifying numbers at the cusp of their knowledge, for example, a child incorrectly labels a set of two objects with the word “three” and simultaneously holds up two fingers. These mismatches differ from previously studied mismatches (where the information conveyed in gesture has the potential to be integrated with the information conveyed in speech) in that the gestured response contradicts the spoken response. Here, we ask whether these contradictory number mismatches predict which learners will profit from number‐word instruction. We used the Give‐a‐Number task to measure number knowledge in 47 children (M_age = 4.1 years, SD = 0.58), and used the What's on this Card task to assess whether children produced gesture‐speech mismatches above their knower level. Children who were early in their number learning trajectories (“one‐knowers” and “two‐knowers”) were then randomly assigned, within knower level, to one of two training conditions: a Counting condition in which children practiced counting objects; or an Enriched Number Talk condition containing counting, labeling set sizes, spatial alignment of neighboring sets, and comparison of these sets. Controlling for counting ability, we found that children were more likely to learn the meaning of new number words in the Enriched Number Talk condition than in the Counting condition, but only if they had produced gesture‐speech mismatches at pretest. The findings suggest that numerical gesture‐speech mismatches are a reliable signal that a child is ready to profit from rich number instruction and provide evidence, for the first time, that cardinal number gestures have a role to play in number‐learning.     

Effects of past language experience and present language context on the shape bias in Spanish–English bilingual children

English‐monolingual children develop a shape bias early in language acquisition, such that they more often generalize a novel label based on shape than other features. Spanish‐monolingual children, however, do not show this bias to the same extent (Hahn & Cantrell, 2012). Studying children who are simultaneously learning both Spanish and English presents a unique opportunity to further investigate how this word‐learning bias develops. Thus, we asked how Spanish–English bilingual children (M_age = 21.31 months) perform in a novel‐noun generalization (NNG) task, specifically examining how past language experience (i.e. language exposure and vocabulary size) and present language context (i.e. whether the NNG task was conducted in Spanish or English) influence the strength of the shape bias. Participants completed the NNG task either entirely in English (N = 16) or entirely in Spanish (N = 16), as well as language understanding tasks in both English and Spanish to ensure that they understood what the experimenter was asking them to do. Parents completed a language exposure survey and vocabulary checklists in Spanish and English. There was a significant interaction between condition and choice type: Bilingual children in the English condition showed a shape bias in the NNG task, but bilingual children in the Spanish condition showed no reliable biases. No measures of past language experience were related to NNG task performance. These results suggest that when learning new words, bilingual children are attuned to the regularities of the present language context, and prior language experiences may play a more secondary role.     

Piloting ‘Clever Kids’: A randomized-controlled trial assessing feasibility,efficacy, and acceptability of a socioemotional well-being programme for children with dyslexia

Children with dyslexia are at elevated risk of internalizing (emotional) and externalizing (behavioural) problems. Clever Kids is a nine-week socioemotional well-being programme developed specifically for upper primary school children with dyslexia. In a small randomized-controlled trial, we tested the feasibility, efficacy, and acceptability of the Clever Kids programme. ‘Forty children (M_age = 10.45 years, 65% male) with clinically diagnosed dyslexia too part in the study. Children were randomized to either attend Clever Kids (n = 20) or to a wait-list control condition (n = 20). Coping skills, self-esteem, resilience, emotion regulation, and internalizing and externalizing symptoms were measured at pre-programme, post-programme, and at three-month follow-up. Recruitment and retention rates indicate high feasibility for further evaluation of the programme. There was a significant interaction between intervention condition and time for non-productive coping [F(2, 76) = 4.29, p = 0.017, f² = 0.11]. Children who attended Clever Kids significantly reduced their use of non-productive coping strategies, and this was maintained at three-month follow-up assessment. For all other outcomes, the interactions between intervention condition and time were non-significant. The programme appears acceptable to children with dyslexia and their families, but may be improved by further reducing the number of activities involving reading and writing. Clever Kids improved the coping skills of children with dyslexia; however, a larger trial is needed to replicate this finding and investigate whether programme attendance is associated with additional improvements in children’s socioemotional well-being.     

Sequence‐specific procedural learning deficits in children with specific language impairment

This study tested the procedural deficit hypothesis of specific language impairment (SLI) by comparing children's performance in two motor procedural learning tasks and an implicit verbal sequence learning task. Participants were 7‐ to 11‐year‐old children with SLI (n = 48), typically developing age‐matched children (n = 20) and younger typically developing children matched for receptive grammar (n = 28). In a serial reaction time task, the children with SLI performed at the same level as the grammar‐matched children, but poorer than age‐matched controls in learning motor sequences. When tested with a motor procedural learning task that did not involve learning sequential relationships between discrete elements (i.e. pursuit rotor), the children with SLI performed comparably with age‐matched children and better than younger grammar‐matched controls. In addition, poor implicit learning of word sequences in a verbal memory task (the Hebb effect) was found in the children with SLI. Together, these findings suggest that SLI might be characterized by deficits in learning sequence‐specific information, rather than generally weak procedural learning.     

A cross‐syndrome study of the differential effects of sleep on declarative memory consolidation in children with neurodevelopmental disorders

Sleep plays an active role in memory consolidation. Because children with Down syndrome (DS) and Williams syndrome (WS) experience significant problems with sleep and also with learning, we predicted that sleep‐dependent memory consolidation would be impaired in these children when compared to typically developing (TD) children. This is the first study to provide a cross‐syndrome comparison of sleep‐dependent learning in school‐aged children. Children with DS (n = 20) and WS (n = 22) and TD children (n = 33) were trained on the novel Animal Names task where they were taught pseudo‐words as the personal names of ten farm and domestic animals, e.g. Basco the cat, with the aid of animal picture flashcards. They were retested following counterbalanced retention intervals of wake and sleep. Overall, TD children remembered significantly more words than both the DS and WS groups. In addition, their performance improved following night‐time sleep, whereas performance over the wake retention interval remained stable, indicating an active role of sleep for memory consolidation. Task performance of children with DS did not significantly change following wake or sleep periods. However, children with DS who were initially trained in the morning continued to improve on the task at the following retests, so that performance on the final test was greater for children who had initially trained in the morning than those who trained in the evening. Children with WS improved on the task between training and the first retest, regardless of whether sleep or wake occurred during the retention interval. This suggests time‐dependent rather than sleep‐dependent learning in children with WS, or tiredness at the end of the first session and better performance once refreshed at the start of the second session, irrespective of the time of day. Contrary to expectations, sleep‐dependent learning was not related to baseline level of performance. The findings have significant implications for educational strategies, and suggest that children with DS should be taught more important or difficult information in the morning when they are better able to learn, whilst children with WS should be allowed a time delay between learning phases to allow for time‐dependent memory consolidation, and frequent breaks from learning so that they are refreshed and able to perform at their best.     

Associations of physical activity and gross motor skills with executive function in preschool children from low‐income South African settings

Executive function is foundational for cognitive development. Previous research has shown both gross motor skills and physical activity to be related to executive function. However, evidence for these relationships in the preschool years, as well as in low‐ and middle‐income countries is lacking. Therefore, this study aimed to investigate the relationships between components of executive function (inhibition, shifting and working memory) and gross motor skills (locomotor skills and object control skills) in a sample of preschool children from urban and rural low‐income settings in South Africa. Results revealed that inhibition and working memory, but not shifting, were associated with gross motor skills. More specifically: inhibition was associated with both locomotor [β = 0.20, p = 0.047] and object control skills [β = 0.24, p = 0.024], whereas working memory was only associated with locomotor skills [β = 0.21, p = 0.039]. Physical activity was not associated with inhibition and shifting but was negatively associated with working memory. These results elaborate a growing evidence base linking executive function and gross motor skills in the early years, and it is the first to look at specific associations of locomotor and object control skills with executive function in the South African context (a low‐ and middle‐income country).     

Children's motor imagery modality dominance modulates the role of attentional focus in motor skill learning

We investigated whether children's motor imagery dominance modulated the relationship between attentional focus and motor learning of a tossing task. One hundred and thirty-eight boys (age: M = 10.13, SD = 0.65) completed the Movement Imagery Questionnaire – Children (MIQ-C) to determine imagery modality dominance (kinesthetic, internal-visual, external-visual) and were randomly assigned to either an internal (n = 71) or external (n = 67) attentional focus group. Participants completed 60 trials of a tossing task with their non-dominant hand on day 1. Participants in the internal focus group were asked “to focus on the throwing arm”, whereas participants in the external focus group were instructed “to focus on the ball.” A retention test was conducted 24 h later to assess motor learning. Overall, the results from a nested, multiple linear regression analysis indicated the degree to which internal or external focus influences children's throwing accuracy is dependent upon their motor imagery modality dominance. Specifically, higher levels of external-visual imagery dominance resulted in greater motor learning for children adopting an external focus. In contrast, higher values of kinesthetic imagery dominance resulted in reduced motor learning for children who adopted an external focus. Despite the need for future research, we recommend motor imagery modality dominance assessments be considered when investigating the influence of attentional focus on motor learning, particularly when the target population is children.     

Young Children's Help‐Seeking as Active Information Gathering

Young children's social learning is a topic of great interest. Here, we examined preschoolers’ (M = 52.44 months, SD = 9.7 months) help‐seeking as a social information gathering activity that may optimize and support children's opportunities for learning. In a toy assembly task, we assessed each child's competency at assembling toys and the difficulty of each step of the task. We hypothesized that children's help‐seeking would be a function of both initial competency and task difficulty. The results confirmed this prediction; all children were more likely to seek assistance on difficult steps and less competent children sought assistance more often. Moreover, the magnitude of the help‐seeking requests (from asking for verbal confirmation to asking the adult to take over the task) similarly related to both competency and difficulty. The results provide support for viewing children's help‐seeking as an information gathering activity, indicating that preschoolers flexibly adjust the level and amount of assistance to optimize their opportunities for learning.     

Physical activity participation and physical aggression in children and adolescents: A systematic review and meta-analysis

BackgroundAggressive behaviour is a substantial behavioural problem in children and adolescents. This review systematically summarises the current evidence on the relationship between physical activity participation and aggressive behaviour and quantifies the effects of physical activity interventions on aggression in children and adolescents.MethodsStudies were identified through a search of five electronic databases (PsycINFO, SPORTDiscus, MEDLINE, CINAHL and Web of Science) with combinations of three groups of keywords. Two independent reviewers screened and extracted data from the individual studies. The reporting quality and publication bias were assessed. The relationship between physical activity participation and aggressive behaviour was systematically summarized. Data (effect sizes) were pooled to investigate the effects of physical activity interventions on aggressive behaviour. A moderator meta-analysis was performed to identify potential moderators of the effects of physical activity interventions on aggressive behaviour.ResultsNineteen studies met the inclusion criteria. The relationship between physical activity participation and aggressive behaviour was mixed. A significant reduction in aggressive behaviour was observed after physical activity interventions (k = 8, SMD = −0.53, 95% CI [−0.27, −0.79], p < 0.001). The moderator meta-analysis showed that physical activity interventions involving team-based physical activity had greater effects than those involving individual-based physical activity (β = 0.42, SE = 0.18, p = 0.02). In addition, interventions involving physical activity alone were more effective in reducing aggressive behaviour than those that combined physical activity with other activities such as a philosophy course (β = −0.63, SE = 0.11, p < 0.001).ConclusionThe current meta-analysis presents evidence for the effect of physical activity interventions on aggressive behaviour in children and adolescents. Physical activity–only interventions involving team-based physical activity might be used for preventing or reducing aggressive behaviour in children and adolescents. Possible mechanisms, methodological strengths and weaknesses, implications, and suggestions for future studies were discussed.     

Effects of a teacher training program to promote physically active play among preschoolers with autism spectrum disorders

Wellness Enhancing Physical Activity for Young Children (WE PLAY) is an intervention intended to promote physical activity (PA) among typically-developing preschool children in child care settings. It was adapted for use by teachers who educate children with Autism Spectrum Disorders (ASD). This study used a multiple baseline design across participants to evaluate the impact of WE PLAY-Autism on teachers' PA facilitating behaviors and on the PA levels of children with ASD. Visual analysis and effect size estimates indicated that two of the three teachers increased their PA facilitating behavior, although this was insufficient to demonstrate a functional relation. Children's (n = 5) PA was measured daily during school hours using accelerometry. Visual analysis, which was further supported by effect size calculations, indicated higher average levels of moderate-to-vigorous PA (MVPA) among preschoolers with ASD in the intervention phase (Tau-U_{A vs. B} = 0.53, p < .001, Hedges' g = 0.99, 95% CI [0.56, 1.43]) and post-training phase (Tau-U_{A vs. B} = 0.55, p < .001, Hedges' g = 1.17, 95% CI [0.73, 1.60]) in comparison to the baseline phase. WE PLAY-Autism is an intervention deserving of further investigation given its meaningful impact on the MVPA of preschoolers with ASD paired with its potential for broad implementation in preschools.     

Patterns of attention to threat across tasks in behaviorally inhibited children at risk for anxiety

Although attention bias towards threat has been causally implicated in the development and maintenance of fear and anxiety, the expected associations do not appear consistently. Reliance on a single task to capture attention bias, in this case overwhelmingly the dot‐probe task, may contribute to this inconsistency. Comparing across attentional bias measures could help capture patterns of behavior that have implications for anxiety. This study examines the patterns of attentional bias across two related measures in a sample of children at temperamental risk for anxiety. Children (Mean_age = 10.19 ± 0.96) characterized as behaviorally inhibited (N = 50) or non‐inhibited (N = 64) via parent‐report completed the dot‐probe and affective Posner tasks to measure attentional bias to threat. Parent‐report diagnostic interviews assessed children's social anxiety. Behavioral inhibition was not associated with performance in the dot‐probe task, but was associated with increased attentional bias to threat in the affective Posner task. Cross‐task convergence was dependent on temperament, such that attention bias across the two tasks was only related in behaviorally inhibited children. Finally, children who were consistently biased across tasks (showing high or low attentional bias scores in both tasks, rather than high in one but low in the other) had higher levels of anxiety. Convergence across attention bias measures may be dependent on individuals' predispositions (e.g. temperament). Moreover, convergence of attention bias across measures may be a stronger marker of information processing patterns that shape socioemotional outcomes than performance in a single task.     

Thinking about multiple identities boosts children’s flexible thinking

Studies of children's developing social identification often focus on individual forms of identity. Yet, everyone has multiple potential identities. Here we investigated whether making children aware of their multifaceted identities—effectively seeing themselves from multiple angles—would promote their flexible thinking. In Experiment 1, 6‐ to 7‐year‐old children (N = 48) were assigned to either a Multiple‐Identities condition where they were led to consider their multiple identities (e.g. friend, neighbor) or to a Physical‐Traits condition where they considered their multiple physical attributes (e.g. legs, arms). Children in the Multiple‐Identity condition subsequently expressed greater flexibility at problem‐solving and categorization than children in the Physical‐Traits condition. Experiment 2 (N = 72) replicated these findings with a new sample of 6‐ to 7‐year‐old children and demonstrated that a Multiple‐Identity mindset must be self‐relevant. Children who were led to think about another child's multiple identities did not express as much subsequent creative thinking as did children who thought about their own multiple identities. Experiment 3 (N = 76) showed that a Mmultiple‐Identity framework may be particularly effective when the identities are presented via generic language suggesting that they are enduring traits (in this case, identities depicted as noun phrases rather than verbal phrases). These findings illustrate that something as simple as thinking about one's identity from multiple angles could serve as a tool to help reduce rigid thinking, which might increase open‐mindedness in a society that is becoming increasingly diverse.     

Working memory,sustained attention,and physical activity: An intraindividual study

ObjectiveExperimental studies show small to moderate effects of both acute and regular physical activity on executive functions, these being strongly associated with academic performance at school. In order to understand the naturally occurring associations between primary school-aged children’s working memory, self-reported sustained attention, and physical activity, 35 children (M_age = 9.8 years, range = 7.6–11.4 years old) in Years 3–6 of primary school took part in a two-week long intraindividual study.MethodsParticipants wore an accelerometer wristband throughout the study, and carried out a working memory task (digit recall) and completed a sustained attention measure each morning and afternoon, giving 517 time-points nested in 4–10 school-days (M_obs = 15.8 situations, n_obs = 4–18).ResultsUsing multilevel structural equation models (MSEM), we found that working memory was stable across time (within-person b = 0.29) and trait-like (ICCs = 0.58). Across situations, state-working memory was higher later in the calendar week. Acute moderate to vigorous physical activity (MVPA) was not associated with state-working memory, but exertion of a higher level of MVPA than usual the previous day was associated with lower state-working memory the following day. Trait-sustained attention (across the two weeks) predicted higher trait-working memory and older students outperformed younger students.ConclusionsImplications for timing and intensity of students’ physical activity in educational settings is discussed.     

Externalizing behaviors and attachment disorganization in children of different‐sex separated parents: The protective role of joint physical custody

The aim of this study was to examine the relationship between externalizing behaviors and the quality of attachment representations in preschool children, and to determine if family type and custody arrangement had a moderating effect on this relationship. The participants were 33 girls and 31 boys (n = 64) aged between three and six years (M = 4.75; SD = 0.87 years) and their mothers. Among them, 36 came from “intact” families, 13 were living mainly with their mothers and 15 were in joint physical custody. Children’s attachment representations were assessed with the Attachment Story Completion Task (Bretherton, Ridgeway & Cassidy, 1990). Mothers reported on their child’s behavior problems using the Child Behavior Checklist (Achenbach & Rescorla, 2001) and on their alliance with the father using the Parenting Alliance Inventory (Abidin & Brunner, 1995). Although children’s externalizing behaviors were found to be associated with the disorganization of their attachment representations, this relationship was significantly weaker and was non‐significant for children in joint physical custody. Thus, the results of this pilot study suggest that joint custody may protect children of separated parents from the effects of attachment disorganization on externalizing behaviors.     

Association of personality with physical,social, and mental activities across the lifespan: Findings from US and French samples

Despite evidence for its health‐related benefits, little is known on the psychological predictors of the participation in leisure activities across the lifespan. Therefore, this study aimed to identify whether personality is associated with a variety of different types of activities, involving physical, cognitive, and social components. The samples included individuals from the second wave of the National Study of Midlife in the United States (N = 3,396) and community‐dwelling French individuals (N = 2,917) aged between 30 and 84. Both samples completed measures of the five‐factor model of personality. To create an activity index, we combined the physical, social, and cognitive (games and developmental) activities performed at least once a month. In both samples, individuals who scored higher on extraversion and openness were more likely to engage in a variety of activity types. The findings were consistent across two samples from different western societies and suggest that extraversion and openness contribute to social, cognitive, and physical functioning across the lifespan.     

Does physical activity and BMI mediate the association between DCD and internalizing problems in early childhood? A partial test of the Environmental Stress Hypothesis

Background and purposeYoung children with Developmental Coordination Disorder (DCD) are more likely to experience internalizing problems, such as depression and anxiety, than typically developing (TD) children. Currently, the underlying mechanisms resulting in increased internalizing problems in DCD remains unknown; however, a previous study based on the Environmental Stress Hypothesis (ESH) indicated that physical inactivity and obesity may mediate the relationship between DCD and internalizing problems. The purpose of this study is to investigate the relationships among DCD, internalizing problems, physical activity, and BMI, and the role of sex in these relationships in preschool children, a population for which we currently have very limited data.MethodsYoung children between the ages of 4 and 5 years enrolled in the Coordination and Activity Tracking in CHildren (CATCH) study comprised the sample (n = 589). Of these, 288 (193 boys, 67.0%) were classified as at risk for DCD (rDCD), based on scoring at or below 16th percentile on the Movement Assessment Battery for Children – Second Edition. Physical activity was measured using accelerometers and height and weight were measured by trained research assistants, while parents completed the Child Behavior Checklist to rate internalizing problems. The mediating effects of physical activity and BMI were tested on the relationship between rDCD and internalizing problems.ResultsChildren with rDCD reported more internalizing problems than TD children. While there was a direct effect of rDCD on internalizing problems, neither physical activity nor BMI were found to mediate this relationship.ConclusionThe findings from this study support co-occurring internalizing problems in preschool children with DCD, and extend these findings to demonstrate that this relationship is not explained by physical activity or BMI in early childhood. Further research should be directed toward other psychosocial factors identified in the ESH to better understand the underlying mechanisms between DCD and co-occurring internalizing problems.     

Heterogeneity impairs numerical matching but not numerical ordering in preschool children

Do preschool children appreciate numerical value as an abstract property of a set of objects? We tested the influence of stimulus features such as size, shape, and color on preschool children's developing nonverbal numerical abilities. Children between 3 and 5 years of age were tested on their ability to estimate number when the sizes, shapes, and colors of the elements in an array were varied (heterogeneous condition) versus when they did not vary (homogeneous condition). One group of children was tested on an ordinal task in which the goal was to select the smaller of two arrays while another group of children was tested on a match‐to‐sample task in which the goal was to choose one of two visual arrays that matched the sample in number. Children performed above chance on both homogeneous and heterogeneous stimuli in both tasks. However, while children showed no impairment on heterogeneous relative to homogeneous arrays in the ordering task, performance was impaired by heterogeneity in the matching task. We suggest that nonverbal numerical abstraction occurs early in development, but specific task objectives may prevent children from engaging in numerical abstraction.     

Individual differences in motor development during early childhood: An MEG study

In a previous study, we reported the first measurements of pre‐movement and sensorimotor cortex activity in preschool age children (ages 3–5 years) using a customized pediatric magnetoencephalographic system. Movement‐related activity in the sensorimotor cortex differed from that typically observed in adults, suggesting that maturation of cortical motor networks was still incomplete by late preschool age. Here we compare these earlier results to a group of school age children (ages 6–8 years) including seven children from the original study measured again two years later, and a group of adults (mean age 31.1 years) performing the same task. Differences in movement‐related brain activity were observed both longitudinally within children in which repeated measurements were made, and cross‐sectionally between preschool age children, school age children, and adults. Movement‐related mu (8–12 Hz) and beta (15–30 Hz) oscillations demonstrated linear increases in amplitude and mean frequency with age. In contrast, movement‐evoked gamma synchronization demonstrated a step‐like transition from low (30–50 Hz) to high (70–90 Hz) narrow‐band oscillations, and this occurred at different ages in different children. Notably, pre‐movement activity (‘readiness fields’) observed in adults was absent in even the oldest children. These are the first direct observations of brain activity accompanying motor responses throughout early childhood, confirming that maturation of this activity is still incomplete by mid‐childhood. In addition, individual children demonstrated markedly different developmental trajectories in movement‐related brain activity, suggesting that individual differences need to be taken into account when studying motor development across age groups.     

The role of emotion knowledge in the links between shyness and children's socio‐emotional functioning at preschool

The present study investigated the potential protective role of components of emotion knowledge (i.e., emotion recognition, situation knowledge) in the links between young children's shyness and indices of socio‐emotional functioning. Participants were n = 163 children (82 boys and 81 girls) aged 23–77 months (M = 53.29, SD = 14.48), recruited from preschools in Italy. Parents provided ratings of child shyness and teachers rated children's socio‐emotional functioning at preschool (i.e., social competence, anxiety‐withdrawal, peer rejection). Children were also interviewed to assess their abilities to recognize facial emotional expressions and identify situations that affect emotions. Among the results, shyness was positively related to anxiety‐withdrawal and peer rejection. In addition, emotion recognition was found to significantly moderate the links between shyness and preschool socio‐emotional functioning, appearing to serve a buffering role. For example, at lower levels of emotion recognition, shyness was positively associated with both anxiety‐withdrawal and rejection by peers, but at higher levels of emotion recognition, these associations were attenuated. Results are discussed in terms of the protective role of emotion recognition in promoting shy children's positive socio‐emotional functioning within the classroom context.