Sensorimotor, preoperational, concrete operations, formal operations. The cognitive development theory was created by Jean Piaget. He was a Swiss psychologist. His many observations and evaluations led to this theory. Piaget studied the way humans obtained new information and how they put to use that information.
The first stage is the Sensorimotor. This stage is from the time a human is born to 24 months of age. Then, there is preoperational. This stage is during the toddler years. From there, it is concrete operations, which is between the ages of 7 and 12. The last stage is formal operations, which is from teenage years to adulthood.
Piaget developed a theory of cognitive development for human intelligence. he observed and evaluated the nature of the human mind. His full name was Jean Piaget and he was a Swiss psychologist. He studies the ways in which human started to obtain new information and then use it constructively for new things.
He included 4 stages 4 stages of development that include sensorimotor that develops from the moment a human is born to about 24 months of age. The second stage is preoperational that occurs during the toddler stage. The concrete operational is between 7 and 12 years. The formal operational stage is from adolescence to adulthood.