Jean Piaget Sensorimotor Stage. The sensorimotor stage is composed of six sub stages and lasts from birth through 24 months. It extends from birth to approximately 2 years and is a period of rapid cognitive growth.
Piaget believed that developing object permanence or object constancy the understanding that objects continue to exist even when they cannot be seen was an important element. It begins at birth and lasts. The sensorimotor stage from birth to age 2.
The preoperational stage from age 2 to about age 7.
It begins at birth and lasts through age 2. Eflexes 0 1 month during this substage the child understands the environment purely through inborn reflexes such as sucking and looking. He also believed that schemes organized ways of making sense of experience change with age because this cognitive modification so vast piaget divided his theory into four stages by age berk 2012 pg. Piaget s theory included four distinct stages of development.