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Bayley Scales of Infant Development Definition

Cognition can be defined as a process by which knowledge is gained from perceptions or ideas. Cognitive development refers to how an infant perceives, thinks, and gains an understanding of the world. Within the history of developmental psychology, the work of Jean Piaget (1896–1980), the Swiss psychologist, has had the greatest impact on the study of cognitive development. Piaget's theory is focused on the processes of cognitive development and states that the child is born with an innate curiosity to interact with and understand his/her environment. It is through interaction with others that the child actively constructs his/her development.