We investigated performance levels on conducting continuous two-footed jumping of preschool children (4 years old) to high school students (16 years old) to clarify the developmental progression and sex differences in motor coordination and agility. In total, 450 children (boys: 227; girls: 223) participated in this study. We set 10 obstacles to…

The architecture of sleep undergoes distinct changes during childhood and early adolescence. Slow wave sleep is involved in memory processing and may support active consolidation of newly encoded representations to support the formation of abstracted "gist" memories. Here, we examined sleep and overnight memory formation in German school…

In this article, we integrate cultural evolutionary theory with empirical research from developmental psychology, cultural anthropology, and primatology to explore the role of peer learning in the development of complex instrumental skills and behavioral norms. We show that instrumental imitation, contingent teaching, generative collaboration, and…

Jeremy Sawyer recounts that, after Lev S. Vygotsky's death, Jean Piaget conceded the Russian psychologist correctly understood the social origins, functions, and developmental trajectory of children's egocentric speech (now called private speech) but dismissed this work as irrelevant to children's egocentrism or nondifferentiation of perspectives.…

Most literature on youth focuses on prominent issues of bullying/cyber abuse, dating and relationship issues, and mental health concerns for children and adolescents; however, specific to preadolescence, little is written in comparison due to the implication that the transition between the two life stages are well blended. However, the question…

It is during their late teens and early twenties that most students attend a university or other institution of higher education. Biologically, these students are adults. However, studies show that there is a delay in maturing. Arnett (2000) introduced the term "emerging adulthood" in reference to the stage of life between adolescence…

With the aim of understanding sociocognitive and socioemotional hybridity in learning spaces, we examined a semester-long learning community where students were given the freedom to advance their epistemological and social agendas across face-to-face and online settings. We collected and analyzed 1,780 online notes written by students throughout…

Background: It is well-established that children and adolescents with developmental language disorder (DLD) have social-emotional difficulties. This is reflected in their behaviour, for instance, by (social) withdrawal, hyperactivity or difficulty with peer relations. Children with DLD are also known to have poorer quality of life (QoL). This is…

In this article, we analyse the ways school headteachers/principals (HT/Ps) at different stages of adult ego development (AED) make sense of and respond to the organisational complexity of their schools. The AED stage of 20 HT/Ps in England was assessed using the Washington University Sentence Completion Test. HT/Ps in the self-aware,…

Self-efficacy has been associated with benefits to everyday life such as resilience to stress and adversity, healthy behaviours, improved performance, and academic achievement. Research into self-efficacy development is scarce in early childhood, yet self-efficacy is associated with numerous skills and competencies taught in the early years of…

Tangible programming tools (TPTs) are promising teaching aids in programming courses due to their interactivity and ability to enhance early childhood students' computational thinking, spatial reasoning, and executive function skills. However, it remains unclear whether TPTs support these skills simultaneously. This study examines the impact of…

The goal of this study was to assess developmental differences in adolescents' and emerging adults' attitudes toward solitude using three different methodologies. Participants were N = 1224 adolescents (n = 367, ages 15-18 years, M[subscript age] = 16.13, SD = 0.54; 65.7% female) and emerging adults (n = 857, aged 18-29 years, M[subscript age] =…

In this historical analysis, we examine the context of debates over the role of phonics in literacy and current debates about the science of reading, with a focus on the work and impact of the late literacy scholar Jeanne Chall. We open by briefly tracing the roots of the enduring debates from the 19th and 20th centuries, focusing on beginning…

There is growing body of scholarship that examines adultism through various methodologies and in a variety of settings, including labor, education, and society. In addition, studies of adultism increasingly recognize how this from of power intersects or is parallel with other forms of oppression. This research is generative for illuminating the…

Previous research on identity development among adolescents has focused on the processes involved. However, it is unclear how the sense of identity (synthesis and confusion) develops and how it relates to life satisfaction. This study aims to examine the relationship between sense of identity and life satisfaction among Japanese youth living in…