Russian version of BRIEF2 Teacher Forms: validation study in typically developing children aged 5 to 7 years old.

This study aimed to examine the psychometric properties of the Russian version of the Behavioral Rating Inventory of Executive Function®, Second Edition (BRIEF2) Teacher Forms and investigate its dimensional structure. The sample consisted of 178 typically developing children aged 5 to 7 years. Internal reliability analysis indicated high reliability (from 0.87 to 0.95) for the three composite indices and the Global Executive Composite across all age groups. Confirmatory factor analysis revealed that the dimensional structure of the Russian version of BRIEF2 was different among children aged 5 and 6 years compared to children aged 7 years, which is probably because, in Russia, the transition from kindergarten to school takes place upon reaching the age of 7. The results confirm that the Russian version of the BRIEF2 Teacher Form can be used as a valid tool to assess EF in 5- and 6-year-old children, provided that the three BRIEF2 indices are used for clinical interpretation. For 7-year-old children, the BRIEF2 was found to be an insufficiently valid tool to assess executive function.

Toy Preferences among 3-to-4-Year-Old Children: The Impact of Socio-Demographic Factors and Developmental Characteristics.

Background: Today's common typologies and categories of children's toys are mainly decided by the manufacturers and retailers of children's products. Such categorizations are not based on a theoretical understanding of child development and therefore cannot provide information about the opportunities that toys provide for the young. Objective: This study proposed three criteria for categorizing toys based on the cultural-historical approach: their degree of realism; their degree of anthropomorphism; and their degree of detail. These criteria were chosen as a result of an analysis of theoretical works carried out in the framework of cultural-historical approach. Design: The proposed criteria were tested through an experiment measuring children's toy preferences. The participants were 129 children of ages 3-4 years. Experimental data confirmed that most children do prefer realistic and detailed toys rather than those with fewer of these properties. The contribution of socio-demographic factors and the children's individual developmental indicators to their toy preference was also analyzed. Results: The study revealed that among various socio-demographic factors, only the child's gender and the number of siblings in the family acted as significant predictors for the toy preferences. None of child's developmental characteristics (nonverbal intelligence, executive functions, and emotional understanding) were found to be significant predictors of preference for particular toys. Conclusions: The assumption that toys can be assessed in terms of their realism and degree of detail found empirical support. The results of this study may be useful in designing further research and in the practical issue of toy selection for children age 3-4 years.

Do executive function and family factors predict children's preference for trendy over classic toys? An experimental investigation.

In the last decade, global trends and social media have covered almost the entire world, including children population. The toy industry is filled with new items whose popularity has been triggered by viral publications on social networks or by popular animated films. The present experimental study is the first to (i) describe the characteristics of toy choice in the context of the spread of global trends, and (ii) examine the influence of family and individual child characteristics on the dependence on trends in toy choice. The sample consisted of N = 127 children aged 3-4 years. Children had individual assessment of non-verbal intelligence main executive function skills (cognitive flexibility, working memory and inhibition control) and took part in the experiment, while their parents completed a questionnaire on family background. Analysis of children's answers about the reason for choosing a particular toy indicates uncertain motivation in choosing a trendy toy in contrast to the classic ones. It is reflected in the fact that children do not know what exactly and how they will play with it. It is revealed that boys are 1.66 times more likely to prefer the trendy toy than girls. It was also found that as inhibitory control increased, children were less dependent on tendencies to choose toys.

Voluntariness and type of digital device usage: A study in terms of Vygotsky's cultural-historical perspective.

Introduction: In recent years, exposure to digital devices during the development stages of a child has been steadily increasing. Exploring the relationship between children's digital device exposure and their voluntariness still shows quite contradictory results. Screen time is the most studied factor on this issue. The purpose of the present study was to suggest the type of digital device used is another factor in addition to screen time. In accordance with the research hypothesis, the use of digital devices as a psychological means is related to higher voluntariness scores. Methods: The study sample was recruited from Moscow kindergartens and schools: preschoolers aged 5-6 years (n = 408) and 6-7 years (n = 351) and schoolchildren aged 7-8 years (n = 253) and 9-10 years (n = 101). The study participants took part in a voluntariness assessment performed via executive functions' (EF) evaluation as well as in a semi-structured interview to identify the type and frequency of digital device usage. Results: There are three findings of the present study, which are given as follows. First, the "frequency of digital device usage" predictor proved its statistical significance for verbal working memory, inhibition, and cognitive flexibility at 7-8 years, and for verbal working memory at 6-7 years. Second, the number of children who use digital devices as a psychological means increases as they grow older. Third, the number of children who use digital devices as a psychological means tends to demonstrate higher mean scores for any executive function skills at 6-7 and 9-10 years and for visual and verbal working memory at 7-8 years. Multiple regression models did not confirm the significance of the "type of digital devices usage" predictor for executive function skills considering the participants' individual characteristics. Discussion: "Type of digital devices usage" predictor is assumed to be more applicable to children at the end of primary school and older when exploring executive function skills in the context of children's digital device exposure.

Learning motivation tendencies among preschoolers: Impact of executive functions and gender differences.

The current study aimed to validate the Russian version of the Child Behaviour Motivation Scale (CBeMO), examine gender differences in motivational tendencies, and explore the impact of executive functions on learning motivation tendencies among children. The sample consisted of 434 typically developing 5-6 years old children. The confirmatory factor analysis showed that according to the evaluation criteria, the model is poorly fitted to the data. However, internal consistency analysis confirmed acceptable levels of reliability and unidimensionality of the CBeMO scales. The identified internal structure of CBeMO indicates an overlap between CBeMO items related to task avoidance and social dependence on the Russian sample. The study revealed differences between girls and boys in all three CBeMO scales. Concerning executive functioning, it was revealed that motor persistence skills and working memory have an impact on the learning motivation tendencies among children, when controlling for group size, age, gender and non-verbal intelligence.

Emotion Understanding in Bilingual Preschoolers.

The effects of bilingualism on child development have been extensively examined in last decades. Research reveals that simultaneous use of two or more languages affects child's language development, cognitive and social skills. The current study focuses on the so-far understudied theory of emotion understanding in bilingual children. A cohort of 593 bilingual and monolingual 5-6-year-olds took the Russian version of the Test of Emotion Comprehension (TEC) that assesses three components of emotion understanding: emotion understanding of external causes of emotions, reflective causes of emotions; and mental causes of emotions. Our results revealed no group differences between overall emotion understanding and understanding of external and reflective causes of emotions. However, monolingual children had a slightly better understanding of mental causes of emotions compared to bilingual children, when controlling for age, gender, and non-verbal intelligence. These results suggest that children growing up in bilingual environments might require more time and/or language/culture exposure to master the ability to understand mental causes of emotions, taking into account cultural differences, as well as the semantic and lexical differences in emotion labelling and emotion expression in each language.

Growth of Executive Functions in Preschool-Age Children During the COVID-19 Lockdown: Empirical Evidence.

Background: During the lockdown for COVID-19, children were limited in a number of activities which are essential for the development of executive functions (play, social interaction, and organized sport). Earlier studies found an increase in executive function issues in children during the pandemic, based on caregivers' reports. Objective: The present study was a pioneer in exploring the dynamics of children's executive function development during the lockdown. Our purpose was to explore the effect of the lockdown on the growth of executive functions in children over a one-year period, as compared to their peers before the pandemic. Design: The sample consisted of two cohorts of children. All the children had been attending the same kindergartens but in different periods of time. The executive functions of both groups were assessed twice, with a year's break in-between (the first group was assessed before the pandemic; the second, during the pandemic). These groups were comparable in gender composition, age, and family's place of residence. Results: The results have confirmed concerns about the slower growth of executive functioning in children during the lockdown versus their peers before the pandemic, especially for cognitive flexibility and working memory. Inhibition was not significantly affected by the lockdown. Moderation analysis showed that the lockdown impacted girls differently than boys in terms of working memory. The negative effect of social restrictions on working memory was significantly higher in females. Conclusion: Our findings illuminate the negative effects the pandemic-related social restrictions had on the growth of children's cognitive flexibility and working memory. For working memory, the effect of social isolation varied depending on the child's gender.

Do Children Need Adult Support During Sociodramatic Play to Develop Executive Functions? Experimental Evidence.

The cultural-historical approach provides the deep theoretical grounds for the analysis of children's play. Vygotsky suggested three critical features of play: switching to an imaginary situation, taking on a play role, and acting according to a set of rules defined by the role. Collaboration, finding ideas and materials for creating an imaginary situation, defining play roles, and planning the plot are complex tasks for children. However, the question is, do children need educator's support during the play to develop their executive functions, and to what extent? This experimental study was aimed at answering this inquiry. The four modes of sociodramatic play were created which differed in the adult intervention, from non-involvement in the play to its entire organization. The play could be child-led (with adult help), adult-led, or free (without any adult intervention); and there was also a control group where the children heard the same stimulus stories as the other groups but then followed them up with a drawing activity instead of a play activity. The study revealed that, firstly, the ways of educator's involvement in the play differed in their potential in respect to the development of executive functions, and, secondly, this influence was not equal for different components of executive functions. Free play in the experiment was not a beneficial condition for the development of any of the studied components of executive functions, compared to the conditions involving the participation of an adult in the play. Furthermore, the type of adult intervention stimulated the development of various executive functions. The entire organization of the play by the adult had a positive impact of their general development. In contrast, the adult's assistance in the organization of the children's play had a positive effect on the development of inhibitory control. The study results can be helpful when considering educational practices within a cultural-historical approach to engaging the potential of play in children's learning and development around the world.

Associations Between Executive Functions and Physical Fitness in Preschool Children.

Considering the current agreement on the significance of executive functions, there is growing interest in determining factors that contribute to the development of these skills, especially during the preschool period. Although multiple studies have been focusing on links between physical activity, physical fitness and executive functions, this topic was more investigated in schoolchildren and adults than in preschoolers. The aim of the current study was to identify different levels of physical fitness among pre-schoolers, followed by an analysis of differences in their executive functions. Participants were 261 5-6-years old children. Inhibitory control and working memory were positively linked with physical fitness. Cognitive flexibility was not associated with physical fitness. The research findings are considered from neuropsychological grounds, Jean Piaget's theory of cognitive development, and the cultural-historical approach.

Executive Functions' Impact on Vocabulary and Verbal Fluency among Mono- and Bilingual Preschool-Aged Children.

Background: The phenomenon of multilingualism and its impact on child development are in the spotlight of latter-day psychology, and of utmost importance both for theory and practice. Language development is a strong predictor of psychological readiness for school and further academic success. At the same time, children's mastery of written and oral speech in school education in a multilingual environment has several distinctive features. This study was dedicated to examining the influence of executive functions on the development of the vocabulary aspects of speech (both active and passive vocabulary) of mono- and bilingual children growing up in a bilingual environment. Objective: We aimed to analyze the relationship between bilingualism and language development (vocabulary and verbal fluency) and determine which executive functions may help overcome the resulting difficulties at preschool age. Design: Both monolingual and bilingual children participated in the study (n = 137 and n = 81, respectively). The children's ages ranged from 6 to 7 years (M = 78.7 months, SD = 5.87). Two independent General Linear Models (GLM) were built to define which executive functions influenced the vocabulary and verbal fluency of the mono- and bilingual subjects (controlling for age, gender, and non-verbal intelligence as well). Results: The results confirmed that bilingualism is negatively related to language development, but showed that verbal working memory significantly helps bilinguals compensate for difficulties in developing vocabulary and verbal fluency. Conclusion: The study demonstrated that the ability to preserve and reproduce verbal information was of more significance for children's vocabulary and verbal fluency than their language group (mono- or bilingual).