Final answer:
Interviewing a small sample of a population to explore human experiences is done through qualitative research, which aims to provide a deep understanding of these experiences via methods such as in-depth interviews.
Step-by-step explanation:
The technique used for interviewing a small sample of a certain population to explore the meaning of certain human experiences is qualitative research. This approach seeks to gain a deeper understanding of human behavior and experiences. It involves in-depth methods like interviews, focus groups, and content analysis. Unlike quantitative research, which uses statistical methods to find patterns across large samples, qualitative research provides rich, detailed insights into the few rather than generalized findings across the many.