Piaget focused on which area of development?

• A. Cognitive development
• B. Social development
• C. Moral development
• D. Emotional development

Answer: (A)

Piaget's work is centered on how thinking changes as children grow. He argued that youngsters progress through a series of qualitative stages, each reflecting a new way of understanding and interacting with the world. Central ideas include schemas—mental structures that guide thinking—and the processes of assimilation and accommodation that transform those schemas in response to experience, all driven by a pursuit of balance, or equilibration. By designing tasks that reveal reasoning about conservation, causality, and abstract logic, Piaget showed how children's reasoning becomes more sophisticated at each stage. That emphasis on the development of internal cognitive processes and how reasoning evolves over time is why cognitive development is the best answer. Social, moral, and emotional development are important domains studied by other theorists; Piaget’s primary contribution was the theory of how thinking itself grows and changes.