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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

<title>Abstract</title>The COVID-19 pandemic has led children to experience school closures. Although increasing evidence suggests that such intense social quarantine influences children’s social relationships with others, longitudinal studies are limited. Using longitudinal data collected during (T1) and after (T2) intensive school closure and home confinement, this study investigated the impacts of social quarantine on children’s social relationships. Japanese parents of children aged 0–9 years (<italic>n</italic> = 425) completed an online questionnaire that examined children’s socio-emotional behavior and perceived proximity to parents or others. The results demonstrated that social quarantine was not significantly related to children’s socio-emotional behavior across all age groups. However, changes in children’s perceived proximity varied depending on certain age-related factors: elementary schoolers’ perceived closeness to parents significantly decreased after the reopening of schools, whereas that to others, such as peers, increased. Such effects were not observed in infants and preschoolers. The follow-up survey 9-month after the reopening of schools (T3; <italic>n</italic> = 130) did not detect significant differences in both children’s socio-emotional behavior and perceived proximity from that after the intense quarantine. These findings suggest that school closure and home confinement may have influenced children’s social development differently across their age, and its effects were larger in perceived closeness rather than social behavior.

DOI： 10.1038/s41598-022-04944-2

PubMed

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その他リンク： https://www.nature.com/articles/s41598-022-04944-2

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Frontiers Media SA  

Nature vs. nurture is an enduring theme of studies of the mind. Past studies on American children and adults have revealed a preference for thinking that even fundamental cognitive abilities documented in human infants and non-human species are late-emerging and reliant on learning and nurture. However, little is known about the generalizability of this “intuitive empiricist” belief and what factors may help explain it. Adult participants (N = 600) reported their beliefs about the emergence of several fundamental cognitive abilities demonstrated by preverbal infants. Studies 1A-1C showed that adults from both Japan and the US similarly estimated an older age of onset for cognitive abilities in human children as compared to the findings of cognitive science and consistently attributed acquisition of these abilities to learning rather than innateness in humans, and they made these learning attributions more so for humans than for non-human species. Study 2 showed that participants’ beliefs about biological evolution versus creationism were related to their age onset estimates for fundamental cognitive abilities, and their beliefs about the malleability of intelligence were related to participants’ explanations of the origin of fundamental cognitive abilities. These findings suggest generalizable preferences for nurture over nature across both Eastern and Western cultures (Japan and the United States), which may be related to people’s beliefs about human origins and the power of learning.

DOI： 10.3389/fpsyg.2022.974434

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Abstract

Japan has a large gender gap; thus, this study examined whether Japanese 4- to 7-year-old children exhibit a “brilliance = males” stereotype and whether parental attitudes toward gender roles were related to children’s stereotypes. We also explored whether the children exhibited such stereotypes in response to various stimuli. We showed children photos (Study 1) and stick figures (Study 2) of men, women, boys, and girls, asking them to attribute traits (smart or nice) to each. Study 1 revealed overwhelming in-group positivity in girls, whereas the results for boys were rather mixed. In Study 2, girls generally attributed nice to their own gender compared to boys. However, “brilliance = males” stereotypical responses were observed from 7 years of age, when boys began to be more likely to attribute smartness to their own gender compared to girls. The new data in Study 3 replicated results of Study 1 and parts of the results of Study 2. Moreover, merging the Study 3 data with that of Studies 1 and 2 confirmed their findings. Furthermore, it replicated the “brilliance = males” stereotype among 7-year-olds in the stick figure task. Parental attitudes toward gender roles were unrelated to children’s gender stereotypes. The results indicated that Japanese children may acquire “brilliance = males” stereotypes later than American children (6-years-old). Furthermore, the results were clearer when children were presented with stick figure stimuli.

DOI： 10.1038/s41598-022-20815-2

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その他リンク： https://www.nature.com/articles/s41598-022-20815-2

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.cogdev.2022.101224

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担当区分：責任著者   記述言語：英語  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Frontiers Media SA  

Efficient data collection in developmental studies is facing challenges due to the decreased birth rates in many regions, reproducibility problems in psychology research, and the COVID-19 pandemic. Here, we propose a novel platform for online developmental science research, the Baby’s Online Live Database (BOLD), which extends the scope of the accessible participant pool, simplifies its management, and enables participant recruitment for longitudinal studies. Through BOLD, researchers can conduct online recruitment of participants preregistered to BOLD simply by specifying their attributes, such as gender and age, and direct the participants to dedicated webpages for each study. Moreover, BOLD handles participant recruitment and reward payment, thereby freeing researchers from the labor of participant management. BOLD also allows researchers the opportunity to access data that were collected from participants in previous research studies. This enables researchers to carry out longitudinal analyses at a relatively low cost. To make BOLD widely accessible, a consortium was formed within the Japan Society of Baby Science, where members from diverse research groups discussed the blueprint of this system. Once in full-scaled operation, BOLD is expected to serve as a platform for various types of online studies and facilitate international collaboration among developmental scientists in the near future.

DOI： 10.3389/fpsyg.2021.729302

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/sode.12556

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/sode.12556

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

We aimed to describe parental presence policy and telemedicine use in Japanese neonatal intensive care units (NICUs) before and during the coronavirus disease (COVID-19) pandemic. This cross-sectional study was performed through an online survey in 110 level III units from 19 November 2020 to 18 December 2020. Nurses’ evaluation of the current situation (during COVID-19) was compared with their retrospective pre-COVID-19 (December 2019) evaluation. Responses were received from 52 NICUs distributed across all regions in Japan. The median allowed parental presence time decreased from 12 h to 1 h, and 29 NICUs allowed entry of parents simultaneously during COVID-19. There was an increase in the number of units providing telemedicine through telephone and online visits during COVID-19 compared to that before COVID-19 (from 2% to 19%). The hybrid design NICUs, with 11–89% of beds in single-patient rooms, allowed a longer parental presence time in the NICUs than those with ≥90% of beds in multi-bed rooms. The number of units implementing kangaroo care decreased during COVID-19 compared to that before COVID-19. The need for telemedicine increased among Japanese NICUs to mitigate the adverse effect of parental restriction and limited physical contact due to the COVID-19 pandemic.

DOI： 10.3390/children8070590

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

<title>Abstract</title>Claims to supernatural power have been used as a basis for authority in a wide range of societies, but little is known about developmental origins of the link between supernatural power and worldly authority. Here, we show that 12- to 16-month-old infants expect agents exhibiting counterintuitive capacities to win out in a two-way standoff over a contested resource. Infants watched two agents gain a reward using either physically intuitive or physically counterintuitive methods, the latter involving simple forms of levitation or teleportation. Infants looked longer, indicating surprise, when the physically intuitive agent subsequently outcompeted a physically counterintuitive agent in securing a reward. Control experiments indicated that infants’ expectations were not simply motived by the efficiency of agents in pursuing their goals, but specifically the deployment of counterintuitive capacities. This suggests that the link between supernatural power and worldly authority has early origins in development.

DOI： 10.1038/s41598-021-89821-0

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その他リンク： http://www.nature.com/articles/s41598-021-89821-0

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1007/s10339-021-01028-3

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その他リンク： https://link.springer.com/article/10.1007/s10339-021-01028-3/fulltext.html

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

Preferring fair resource distribution reflects human cooperative nature, but its neural correlates in young children are not well known. We investigated the neural mechanism of egalitarian resource sharing in five-to six-year-old children to examine the possibility that early egalitarianism requires behavioral control to inhibit selfish impulses. In Study 1, children participated in a behavioral control task in which they either needed or did not need to inhibit their impulsive behavioral responses in order to quickly press a key. They subsequently allocated their resources to strangers by choosing a 2:2, 3:1, or 4:0 distribution. The activation of the dorsolateral prefrontal (dlpfc) regions was recorded by functional near-infrared spectroscopy measurements. We found that dlpfc regions were activated during cognitive tasks involving behavioral control and also during the equal, but not the more selfish, allocations. There was no difference among these allocations. The results did not show evidence of an ego depletion effect on children's sharing behavior, which predicts that children will share less after their behavioral control is taxed in a cognitive task (i.e., their self-control resource depleted). Study 2 showed no activation of the dlpfc regions during third-party equal allocations in which there was no conflict between fairness and self-interest in the distribution of resources. Overall, we showed that costly equal sharing in young children relates to the activation of dlpfc regions. These results suggest that costly equal allocation has a common neural basis with behavioral control in five-to six-year-old children, implying that early egalitarian sharing requires dealing with conflicts between maximizing self-interest and following moral norms.

DOI： 10.1016/j.neuropsychologia.2021.107787

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.21203/rs.3.rs-55554/v1

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その他リンク： https://www.researchsquare.com/article/rs-55554/v1.html

出版者・発行元：Center for Open Science  

<p>A novel coronavirus, SARS-CoV-2, has spread widely throughout the world. To reduce the spread of infection, children are prevented from going to school and have fewer opportunities for in-person communication. Although the pandemic has impacted the everyday lives of children, its impact on their development is unknown. This cross-sectional study compared Japanese children’s socio-emotional behaviors before and during the pandemic. Parents completed a web-based questionnaire before and during the pandemic for children ages 4-9. Children’s socio-emotional development in an everyday context was assessed using the Strengths and Difficulties Questionnaire (SDQ). The results indicated that during the pandemic, children were more prosocial and experienced more problems in their peer relationships, but no differences were found in emotional symptoms, conduct problems, hyperactivity between before and during the pandemic. Overall, our results suggest the pandemic may have immediate impact on children’s socio-emotional behaviors. We discussed the results in terms of behavioral immune system.</p>

DOI： 10.31234/osf.io/6b4vh

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Informa UK Limited  

DOI： 10.1080/17405629.2019.1628737

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1098/rspb.2019.1674

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.jecp.2019.104672

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.infbeh.2018.12.002

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1186/s13104-017-2972-3

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その他リンク： http://link.springer.com/article/10.1186/s13104-017-2972-3/fulltext.html

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PUBLIC LIBRARY SCIENCE  

Understanding the referent of other's utterance by referring the contextual information helps in smooth communication. Although this pragmatic referential process can be observed even in infants, its underlying mechanism and relative abilities remain unclear. This study aimed to comprehend the background of the referential process by investigating whether the phonological loop affected the referent assignment. A total of 76 children (43 girls) aged 3-5 years participated in a reference assignment task in which an experimenter asked them to answer explicit (e.g., "What color is this?") and ambiguous (e.g., "What about this?") questions about colorful objects. The phonological loop capacity was measured by using the forward digit span task in which children were required to repeat the numbers as an experimenter uttered them. The results showed that the scores of the forward digit span task positively predicted correct response to explicit questions and part of the ambiguous questions. That is, the phonological loop capacity did not have effects on referent assignment in response to ambiguous questions that were asked after a topic shift of the explicit questions and thus required a backward reference to the preceding explicit questions to detect the intent of the current ambiguous questions. These results suggest that although the phonological loop capacity could overtly enhance the storage of verbal information, it does not seem to directly contribute to the pragmatic referential process, which might require further social cognitive processes.

DOI： 10.1371/journal.pone.0187368

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：FRONTIERS MEDIA SA  

Not only responding to direct social actions toward themselves, infants also pay attention to relevant information from third-party interactions. However, it is unclear whether and how infants recognize the structure of these interactions. The current study aimed to investigate how infants' observation of third-party attentional relationships influence their subsequent gaze following. Nine-month-old, 1-year-old, and 1.5-year-old infants (N = 72, 37 girls) observed video clips in which a female actor gazed at one of two toys after she and her partner either silently faced each other (face-to-face condition) or looked in opposite directions (back-to-back condition). An eye tracker was used to record the infants' looking behavior (e.g., looking time, looking frequency). The analyses revealed that younger infants followed the actor's gaze toward the target object in both conditions, but this was not the case for the 1.5-year-old infants in the back-to-back condition. Furthermore, we found that infants' gaze following could be negatively predicted by their expectation of the partner's response to the actor's head turn (i.e., they shift their gaze toward the partner immediately after they realize that the actor's head will turn). These findings suggested that the sensitivity to the difference in knowledge and attentional states in the second year of human life could be extended to third-party interactions, even without any direct involvement in the situation. Additionally, a spontaneous concern with the epistemic gap between self and other, as well as between others, develops by this age. These processes might be considered part of the fundamental basis for human communication.

DOI： 10.3389/fpsyg.2016.02065

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PUBLIC LIBRARY SCIENCE  

Inferring the epistemic states of others is considered to be an essential requirement for humans to communicate; however, the developmental trajectory of this ability is unclear. The aim of the current study was to determine developmental trends in this ability by using pointing behavior as a dependent measure. Infants aged 13 to 18 months (n = 32, 16 females) participated in the study. The experiment consisted of two phases. In the Shared Experience Phase, both the participant and the experimenter experienced (played with) an object, and the participant experienced a second object while the experimenter was absent. In the Pointing Phase, the participant was seated on his/her mother's lap, facing the experimenter, and the same two objects from the Shared Experience Phase were presented side-by-side behind the experimenter. The participants' spontaneous pointing was analyzed from video footage. While the analysis of the Shared Experience Phase suggested that there was no significant difference in the duration of the participants' visual attention to the two objects, the participants pointed more frequently to the object that could be considered "new'' for the experimenter (in Experiment 1). This selective pointing was not observed when the experimenter could be considered unfamiliar with both of the objects (in Experiment 2). These findings suggest that infants in this age group spontaneously point, presumably to inform about an object, reflecting the partner's attentional and knowledge states.

DOI： 10.1371/journal.pone.0107579

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記述言語：日本語   出版者・発行元：電子情報通信学会  

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人電子情報通信学会  

コミュニケーションが成立するには、他者の認知環境を推測する必要がある。しかし、その個体発生はまだ十分にわかっていない。本研究は、乳児の自発的指さしを指標とし、他者との経験共有が乳児の情報提供行動に及ぼす影響を実験的に検討した。その結果、生後2年目の乳児は他者の認知環境を推測したうえで、自発的に情報提供をおこなうことが示された。

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記述言語：日本語   出版者・発行元：一般社団法人電子情報通信学会  

本研究では2つの実験を行い、幼児の道徳判断を成人のそれと比較した。具体的には、複数の人物が協働して作業にあたったところ,ネガティブな結果が生じる場面に対し責任帰属を求めることを通じて、集合的な共同プロセスに対する責任帰属にともなう困難やジレンマをどのように幼児が処理するのかを検討した。主に,接触原理に基づく道徳判断の発達的変化に注目した。被験者に提示した実験刺激のひとつでは、課題の解決方法を「提案」する人物と、提案に賛成したうえで「実行」する行為者が登場した。ひとつの条件では提案者が提案に加えて実行者の実行を手助けした。他方の条件では提案者は実行を手助けしなかった。提案者にネガティブな結果の責めをどの程度帰責するかを尋ねたところ、成人と6歳児では条件の効果が見られなかったのに対し、5歳児は手助けがあった条件において提案者に強く帰責した。このことから、合意形成・意思決定というコミュニカティブな側面を考慮した道徳判断は、物理的な顕在的な接触原理を抑制したのちに現れる可能性が示唆された。

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