Question

sigmund freud developed his theory of human personality by conducting in-depth interviews over an extended period of time with a few clients. this type of research approach is known as a(n): ______.

○ archival research

○ survey

○ naturalistic observation

○ case study

Explanation:

• Archival research uses existing records, not direct interviews.
• Surveys collect data from large groups via standardized tools.
• Naturalistic observation watches subjects in their natural setting without direct, long-term interviews.
• A case study involves in-depth, long-term investigation of a small number of individuals, which matches Freud's approach with his clients.

Answer:

case study