Who gave the theory of cognitive development:

Cognitive development refers to the process through which individuals acquire, organize, and use knowledge.

• This development involves changes in thinking, problem-solving, memory, and reasoning as children grow. 

Key Points

• The theory of cognitive development was proposed by Jean Piaget.
• Piaget's theory suggests that children go through four stages of cognitive development: sensorimotor, preoperational, concrete operational, and formal operational.
• Each stage represents a qualitative change in how children think and understand the world.
• Piaget emphasized that children actively construct their knowledge through interactions with their environment.

Hint

• Skinner was a behaviorist who focused on the influence of reinforcement and punishment on behavior.
• Thorndike was known for his work on the law of effect, which influenced learning theory.
• Kohler is associated with insight learning, particularly in animals.

Hence, the correct answer is 'Piaget'.