The document outlines the nature and methodology of interviews as a data collection method in psychology, detailing their types—structured, semi-structured, and unstructured—and when to utilize them. It emphasizes the importance of interviews in gaining deep insights into personal experiences, especially for sensitive or complex topics, through effective questioning and rapport-building strategies. Additionally, it covers best practices for interviewing difficult participants and the steps necessary for analyzing interview data, including transcription and familiarization with content.