Jean Piaget proposed a stage theory of _____ development.

• A. moral
• B. cognitive
• C. emotional
• D. psychosexual

Answer: (B)

Verified step by step guidance

1. Understand that Jean Piaget is a renowned developmental psychologist known for his theory on how children develop intellectually.
2. Recall that Piaget's theory focuses on the progression of thinking and reasoning abilities in children, which relates to their mental processes.
3. Identify the type of development Piaget's stages describe, which involves how knowledge and understanding evolve over time.
4. Recognize that the term 'cognitive development' refers to the growth of mental processes such as thinking, problem-solving, and understanding.
5. Conclude that the correct answer is 'cognitive' because Piaget's stage theory specifically addresses cognitive development.