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Mental state language (MSL) is an important mechanism through which children learn about their social world and place within it. Previous research has suggested that parents may use MSL differently towards children based on their child's gender. However, findings are inconsistent. This scoping review explores the consistency of reported differences in parents' MSL use as a function of children's gender while exploring the methodological variables that may provide insights into these differences. Based on a review of the 27 studies included, 12 found a significant relationship between child gender and parents' MSL, while the remaining did not. The included studies used a range of methodological approaches to elicit MSL. This scoping review allows researchers and practitioners to reflect upon assumptions regarding the associations between child gender and parents' MSL. Further, we call for the use of diverse and informed approaches when studying these associations from a developmental perspective in the future.

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Participation in Organised Extracurricular Social Activities (OESA) can provide positive outcomes for children. This study investigated whether children aged 4 to 12 years diagnosed with autism differ in their OESA participation and experience compared to neurotypical peers. Parents of autistic children (n = 35) and those of neurotypical peers (n = 171) responded to questions that asked them to reflect on their child's participation and experiences in OESAs. Parents of autistic children reported significantly less OESA participation compared to parents of neurotypical children. Additionally, when evaluating factors that facilitated OESA participation, parents of autistic children rated their child's individual abilities and behaviour, the OESA's features, and the social environment less positively, compared to parents of neurotypical children. OESA participation and experiences differ for autistic and neurotypical children. This study identifies factors that can be adjusted to mitigate this difference.

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BACKGROUND: Siblings represent an important influence on children's development. It is possible that sibling influence on developmental outcomes differs in sibling pairs when one of the children has a disability. Previous research has tended to focus on outcomes for typically developing siblings when they have a brother/sister with a disability. AIMS: The purpose of this scoping review was to explore empirical studies reporting on the impact of siblings on the developmental outcomes of children with disability to better understand the areas that are influenced by siblings and the factors that contribute to this influence. METHOD: To identify relevant studies, the electronic databases of EBSCO, ERIC, Informit, Ovid, ProQuest and Scopus were searched. These searches were supplemented by direction from the authors on relevant literature and citation searches of papers identified for inclusion. Descriptive details were extracted, followed by details related to research design and findings of the studies. OUTCOMES AND RESULTS: Twenty-two papers were determined to meet inclusion criteria. Investigations of sibling influence have concentrated on children with ASD; other groups are not well represented. There is some evidence that having older siblings may be protective for children with ASD; however, this was not an invariable finding. There is too little consistency across studies to determine whether and how siblings influence development of children with disability. CONCLUSIONS AND IMPLICATIONS: Further work is required to understand the potentially crucial influence that siblings may have on developmental outcomes of children with disability.

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The "video deficit" is a well-documented effect whereby children learn less well about information delivered via a screen than the same information delivered in person. Research suggests that increasing social contingency may ameliorate this video deficit. The current study instantiated social contingency to screen-based information by embodying the screen within a socially interactive robot presented to urban Australian children with frequent exposure to screen-based communication. We failed to document differences between 22- to 26-month-old children's (N = 80) imitation of screen-based information embedded in a social robot and in-person humans. Furthermore, we did not replicate the video deficit with children imitating at similar levels regardless of the presentation medium. This failure to replicate supports the findings of a recent meta-analysis of video deficit research whereby there appears to be a steady decrease over time in the magnitude of the video deficit effect. We postulate that, should the video deficit effect be truly dwindling in effect size, the video deficit may soon be a historical artifact as children begin perceiving technology as relevant and meaningful in everyday life more and more. This research finds that observational-based learning material can be successfully delivered in person, via a screen, or via a screen embedded in a social robot.

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The study examined the presence and nature of a relationship between 13 early childhood educators' mental state language (MSL) and 77 preschool children's (3- to 5 years) Theory of Mind (ToM). Educator language samples were elicited during two naturalistic group-time contexts, wordless picture book storytelling and an instructional building task. MSL was coded according to a comprehensive scheme that captures facets of MSL content and quality. To account for well-established determinants of ToM, a range of child- and family-level factors were also measured. Results indicated no significant relationship between educator MSL during group level instruction and children's ToM in the preschool setting. Although these findings challenge the assumption that educators' MSL is important for children's ToM development, important future directions are discussed.

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Western mothers use more mental state talk with children than do Chinese mothers (e.g., "think", "like", "happy"). The present study aimed to examine whether Western mothers not only produced a greater amount of mental state talk, but also used a wider range of mental state terms (i.e., greater lexical variety) compared to Chinese mothers. We compared maternal mental state talk in 271 mother-child dyads from New Zealand, Australia and China, and coded both quantity (i.e., frequency) and quality (i.e., type, variety, valence) of mothers' mental state talk to their 2.5- to 5-year-olds. Western mothers produced more talk about cognitions and emotions, as well as modulations of assertions, but a similar amount of desire talk, compared to Chinese mothers, with the same patterns found in the variety of talk. Western mothers produced an overall higher amount of mental state talk and a greater variety of mental state terms, but crucially, still produced more MS talk after controlling for the variety. Neither the amount nor the variety of maternal MS talk was correlated with children's theory of mind. These findings shed light on the diverse ways that mothers construe and describe mental states in different cultures, and highlight the importance of examining different aspects of maternal mental state talk and their impact on children's theory of mind in future longitudinal studies.

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Traditionally, infants have learned how to interact with objects in their environment through direct observations of adults and peers. In recent decades these models have been available over different media, and this has introduced non-human agents to infants' learning environments. Humanoid robots are increasingly portrayed as social agents in on screen, but the degree to which infants are capable of observational learning from screen-based robots is unknown. The current study thus investigated how well 1- to 3-year-olds (N = 230) could imitate on-screen robots relative to on-screen and live humans. Participants exhibited an imitation deficit for robots that varied with age. Furthermore, the well-known video deficit did not replicate as expected, and was weak and transient relative to past research. Together, the findings documented here suggest that infants are learning from media in ways that differ from past generations, but that this new learning is nuanced when novel technologies are involved.

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Neonatal imitation is widely accepted as fact and cited as evidence of an inborn mirror neuron system that underpins human social behaviour, even though its existence has been debated for decades. The possibility that newborns do not imitate was reinvigorated recently by powerful longitudinal data and novel analyses. Although the evidence is still mixed, recent research progresses the debate by ruling out some long-standing explanations for why the effect might be difficult to detect, by showing that only some research groups observe it, and by revealing indications that the published literature is biased. Further advances will be made with updated testing procedures and reporting standards, and investigation of new research questions such as how infants could learn to imitate.

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Neonatal imitation is a cornerstone in many theoretical accounts of human development and social behavior, yet its existence has been debated for the past 40 years. To examine possible explanations for the inconsistent findings in this body of research, we conducted a multilevel meta-analysis synthesizing 336 effect sizes from 33 independent samples of human newborns, reported in 26 articles. The meta-analysis found significant evidence for neonatal imitation (d = 0.68, 95% CI = [0.39, 0.96], p < .001) but substantial heterogeneity between study estimates. This heterogeneity was not explained by any of 13 methodological moderators identified by previous reviews, but it was associated with researcher affiliation, test of moderators (QM) (15) = 57.09, p < .001. There are at least two possible explanations for these results: (a) Neonatal imitation exists and its detection varies as a function of uncaptured methodological factors common to a limited set of studies, and (2) neonatal imitation does not exist and the overall positive result is an artifact of high researcher degrees of freedom.

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Commensurate with constant technological advances, social robots are increasingly anticipated to enter homes and classrooms; however, little is known about the efficacy of social robots as teaching tools. To investigate children's learning from robots, 1- to 3-year-olds observed either a human or a robot demonstrate two goal-directed object manipulation tasks and were then given the opportunity to act on the objects. Children exhibited less imitation from robotic models that varied with task complexity and age, a phenomenon we term the "robot deficit." In addition, the more children engaged with the robot prior to administration of the imitation task, the more likely they were to replicate the robot's actions. These findings document how children are able to learn from robots but that ongoing design of robotic platforms needs to be oriented to developing more socially engaging means of interacting.

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This study explored theory of mind (ToM) development in school-aged deaf children. To address new questions, we gave a standard, well-controlled false-belief test to a large (n = 200) sample of severely-to-profoundly deaf children aged 8-15 years in a non-Western culture (Thailand). There were 190 deaf children of hearing parents and 10 deaf native signers with signing deaf parents, consistent with overall population ratios. Comparing our Thai sample's ToM performance on standard tests of false-belief understanding with that reported in past studies, our results showed a 67% ToM success rate for Thai severely-to-profoundly deaf children of hearing parents similar to collective findings from past research on smaller samples in Australia, Estonia, France, Great Britain, Sweden, and the United States. Our Thai deaf native signers likewise performed equivalently to native signers of similar age studied in past research in Australia and the United States. Collectively, the detailed findings of our study suggest promising new directions for future studies to pursue in order to build upon this novel and theoretically provocative evidence about how ToM development and ToM delay unfold for school-aged deaf children growing up in varied cultures, school settings, and family circumstances.

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We investigated whether embodied ownership is evident in early childhood. To do so, we gifted a drinking bottle to children (aged 24-48 months) to use for 2 weeks. They returned to perform reach-grasp-lift-replace actions with their own or the experimenter's bottle while we recorded their movements using motion capture. There were differences in motor interactions with self- vs experimenter-owned bottles, such that children positioned self-owned bottles significantly closer to themselves compared with the experimenter's bottle. Age did not modulate the positioning of the self-owned bottle relative to the experimenter-owned bottle. In contrast, the pattern was not evident in children who selected one of the two bottles to keep only after the task was completed, and thus did not 'own' it during the task (Experiment 2). These results extend similar findings in adults, confirming the importance of ownership in determining self-other differences and provide novel evidence that object ownership influences sensorimotor processes from as early as 2 years of age.

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The influential hypothesis that humans imitate from birth - and that this capacity is foundational to social cognition - is currently being challenged from several angles. Most prominently, the largest and most comprehensive longitudinal study of neonatal imitation to date failed to find evidence that neonates copied any of nine actions at any of four time points (Oostenbroek et al., [2016] Current Biology, 26, 1334-1338). The authors of an alternative and statistically liberal post-hoc analysis of these same data (Meltzoff et al., [2017] Developmental Science, 21, e12609), however, concluded that the infants actually did imitate one of the nine actions: tongue protrusion. In line with the original intentions of this longitudinal study, we here report on whether individual differences in neonatal "imitation" predict later-developing social cognitive behaviours. We measured a variety of social cognitive behaviours in a subset of the original sample of infants (N = 71) during the first 18 months: object-directed imitation, joint attention, synchronous imitation and mirror self-recognition. Results show that, even using the liberal operationalization, individual scores for neonatal "imitation" of tongue protrusion failed to predict any of the later-developing social cognitive behaviours. The average Spearman correlation was close to zero, mean rs  = 0.027, 95% CI [-0.020, 0.075], with all Bonferroni adjusted p values > .999. These results run counter to Meltzoff et al.'s rebuttal, and to the existence of a "like me" mechanism in neonates that is foundational to human social cognition.

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Past research has indicated that young children have a propensity to adopt the causally unnecessary actions of an adult, a phenomenon known as overimitation. Among competing perspectives, social accounts suggest that overimitation satisfies social motivations, be they affiliative or normative, whereas the "copy-all/refine-later" account proposes that overimitation serves a functional purpose by giving children the greatest opportunity to acquire knowledge with little error. Until recently, these two accounts have been difficult to extricate experimentally, but the development of humanoid robots provides a novel test. Here we document that children overimitate robots, but to a lesser degree than humans and regardless of whether the redundant actions are seen to be ritualistic or functional. These results are best explained with a combined account of overimitation, whereby children approach a learning task with a copy-all/refine-later motivation, but the fidelity of the reproduction of novel behaviors is modulated by the social availability of the demonstrator.

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The current sentence is in the discussion (sub-section The role of pre-conception maternal depression) and reads: "Pre-conception treatment of mental health issues is also associated with substantial savings in health care costs (Chojenta et al., 2018)."

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BACKGROUND: Both siblings and parents are important interactional partners for children with ASD, but we know little about whether these interactions differ between these two groups, or between older and younger siblings. AIMS: To gather data about how parents perceive the interactional behaviors displayed by their child with ASD in play with their typically developing siblings and their parents. METHODS AND PROCEDURES: Parents completed a questionnaire developed for this study about the behaviors their children with ASD demonstrated when interacting with a sibling or parent. Following factor analysis, a 29-item instrument with two factors was revealed. Factors were labelled Prosocial Interaction and Withdrawal/Agonism. OUTCOMES AND RESULTS: In some families, children with ASD were reported to display significantly higher levels of negative interaction when playing with their older siblings in comparison to younger siblings. When playing with their children with ASD, parents reported significantly more negative interactions compared to when their children with ASD played with younger siblings. There were few differences reported for play behaviors with parents versus older siblings. CONCLUSIONS AND IMPLICATIONS: Children with ASD appear to display different interactional behaviors depending upon their play partners within the family unit. This study could be used to inform researchers of different interaction strategies which may be useful in creating interventions.

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Using a between-groups design and random assignment, this study examined 214 Turkish children's (M = 11.66 years) mindreading and general reasoning about in-group members (Turks), similar out-group members (Syrians within Turkey) and dissimilar out-group members (Northern Europeans). Children heard four mindreading and four general reasoning stories with in-group or out-group members as targets. Whereas children's general reasoning about three groups was equivalent, accuracy of mental state inferences differed by target with more accurate mindreading of in-group targets compared to both sets of out-group targets. In this Turkish sample, mindreading of Syrian targets was the least accurate. Prejudice and perceived realistic threat predicted lower mindreading. These findings have important implications for understanding how similarity and intergroup processes play a role in children's mindreading.

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Maternal depression is a potent risk factor for poor child development across a number of domains but the mechanisms of transmission are poorly understood. This study aimed to test competing mediators of the association between pre-conception maternal depression and child psychosocial functioning. In 2016, mothers in the 1973-1978 cohort of the Australian Longitudinal Study on Women's Health were asked to be part of the Mothers and their Children's Health study and to complete surveys on the health of their three youngest children under 13 years. The current study includes children aged 0-12 years (N = 5532, M = 6.99 years, SD = 3.22 years) and their mothers (N = 2917). We used the CESD-10 to measure depression and the PedsQL to measure psychosocial functioning, and used multilevel structural equation modeling to test hypotheses. Pre-conception maternal depression was associated with poorer maternal mental health and parenting after birth. The effect of pre-conception maternal depression was mediated by post-birth maternal depression in children aged 0-4 years (unstandardized regression coefficient (B) = - 0.26, 95%CI - 0.38, - 0.13) and children aged 5-12 years (B = - 0.25, 95%CI - 0.34, - 0.16), and by post-birth maternal stress (B = - 0.04, 95%CI - 0.08, - 0.01), and parenting (B = - 0.03, 95%CI - 0.04, - 0.02) in children aged 5-12 years. Post-birth maternal depression was the strongest mediator. Pre-conception is the optimal time for depression intervention. Post-birth interventions should include a focus on reducing depression and improving negative parenting aspects such as hostility and discipline.

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The Observation of Human-Animal Interaction for Research (OHAIRE) is a coding tool developed to capture the behavior of children when interacting with social partners and animals in naturalistic settings. The OHAIRE behavioral categories of focus are emotional displays, social communication behaviors toward adults and peers, behaviors directed toward animals or experimental control objects, and interfering behaviors. To date, the OHAIRE has been used by 14 coders to code 2,732 min of video across four studies with a total of 201 participants ages 5 to 18 years (M = 10.1, SD = 2.5). Studies involved animal-assisted intervention with three species (i.e., dogs, horses, and guinea pigs) and three populations (i.e., autism spectrum disorder, attention-deficit hyperactivity disorder, and typically developing children) in a school, a therapeutic horseback riding program, a group therapy program, and the hospital setting. We explored the psychometric properties of the OHAIRE through analyses of its inter-rater reliability, intra-rater reliability, convergent and divergent validity, and internal structure, using data from these four human-animal interaction studies. The average inter-rater reliability was excellent (kappa = 0.81), with good reliability in most of the behavioral categories coded. Intra-rater reliability was consistently excellent (0.87 ≤ kappa ≤0.96). Internal structure analyses with Cronbach's alpha supported the exploratory use of subscales to measure social communication behaviors toward peers (α = 0.638) and adults (α = 0.605), and interactions experimental control objects (α = 0.589), and the use of a subscale to measure interactions with animals (α = 0.773). Correlation analyses with multiple questionnaires showed a convergence between positive emotional display and social behaviors as assessed by the OHAIRE and social skills as assessed by the Social Skills Rating System (SSRS) and the Social Communication Questionnaires (SCQ). Little concordance was found between the OHAIRE and the Social Responsiveness Scale (SRS) or the Aberrant Behavior Checklist-Community (ABC). The OHAIRE shows promise for wider use in the field of Human-Animal Interaction, with a need for generalization across more settings and ages.