Research Findings: Optimal sleep is important for children's learning and development. "Sleep disordered breathing" (SDB) refers to a spectrum of conditions from simple snoring to obstructive sleep apnea that is common in childhood and interrupts sleep. We examined pathways between SDB and academic performance of children (N = 163, M…

Research Findings: This study examined the learning effects of collaborative group work under heterogeneous group composition among 5-year-old children, especially in terms of their social skills. To this end, the study utilized an experimental research design wherein 3 groups of differently composed dyads and a group of students who worked alone…