Aging speeds up during middle adulthood (ages 40–65) and is characterized by decline Since Piaget's theory of cognitive development, other developmental.
Piaget's theory of cognitive development is a comprehensive theory about the nature and Piaget "was intrigued by the fact that children of different ages made different kinds of mistakes while solving problems". He also believed that children are not like "little adults" who may know less; children just think and speak.
Jean Piaget was a Swiss psychologist known for his work on child development. Piaget's theory . For each stage of development the child forms a view of reality for that age period. At the next .. Piaget argued that children and adults used speech for different purposes. In order 74 (1): 24–40. doi:10.1007/ bf00248277.