Best practice is based on knowledge—not on beliefs or guesses—about how children learn and develop. This volume contains 20 overviews of research on aspects of young children's social, emotional, cognitive, or physical development, as well as how the findings can be applied in the classroom. Originally "Research in Review" articles in NAEYC's journal Young Children, each has been freshly updated to reflect the current context and research base. Classroom teachers and teacher trainers will find valuable the overviews' plain discourse in making complex concepts more understandable.