Child development
Lev Vygotsky built his theory of child development on the importance of three things. Vygotsky thought that children’s development was formed from mainly social and cultural interactions. Interactions occur when two or more people talk and/or work together. Vygotsky thought that culture has a big effect on how cognitive growth develops.  Vygotsky also focused on language. He felt language was very important for changing how a child thinks.