Step 1: Understanding the Question:
The question asks for the technical term for a research method popularized by Jean Piaget to understand how children think.
Step 2: Detailed Explanation:
• A clinical interview (B) is a flexible, open-ended questioning technique used to explore a child's line of reasoning.
• Unlike a structured interview (A), which has fixed questions in a fixed order, the clinical interview allows the researcher to follow the child's lead.
• If a child gives an interesting answer, the interviewer can ask follow-up questions to understand the "why" behind the child's thought process.
• This method was crucial for Piaget in discovering the stages of cognitive development, as it revealed the qualitative differences in how children perceive the world compared to adults.
• It is "clinical" because it borrows from the diagnostic style of medicine but applies it to cognitive exploration.
Step 3: Final Answer:
The method is called a Clinical Interview.