Piaget S Cognitive Stages. Birth through ages 18 24 months. Piaget s theory of cognitive development is a comprehensive theory about the nature and development of human intelligence it was originated by the swiss developmental psychologist jean piaget 1896 1980.
Piaget s four stages of intellectual or cognitive development are. Toddlerhood 18 24 months through early childhood age 7. The skills learned in this stage will be carried into adulthood.
His contributions include a stage theory of child cognitive development detailed observational studies of cognition in children and a series of simple but ingenious tests to reveal different cognitive abilities.
Each stage includes certain milestones where the child demonstrates a more. Birth through ages 18 24 months. Cognitive development involves changes in cognitive process and abilities. In piaget s theory there are four critical concepts of adaption that help to explain how each child is able to advance through the four stages.