Piaget’s stages of development include sensorimotor, preoperational, concrete operational, and formal operational. While there is some criticism of them, they may help characterize child development.

Rufus Tony Spann, Ph.D., L.C.P.C., L.P.C. Mental Health / Holistic Health Dr. Rufus Tony Spann is a nationally certified school psychologist, licensed professional counselor, yoga teacher and reiki ...

Although there is no general theory of cognitive development, the most historically influential theory was developed by Jean Piaget, a Swiss Psychologist (1896-1980). His theory provided many central ...

Jean Piaget (1896-1980) always considered himself a natural scientist, not a psychologist. As a boy he quickly gave up play and pretend to take refuge in "work" -- exploring internal combustion ...