This document discusses the collection and summarization of subjective data. It defines subjective data as information obtained through client interviews that includes sensations, symptoms, preferences, feelings, beliefs, and personal information. It emphasizes the skills needed to obtain this type of data through effective communication techniques during interviews. These include interviewing skills, empathy, active listening, and building rapport. The document also outlines the components of a complete health history, including biographical data, reasons for care, present and past health concerns, family history, lifestyle factors, and developmental level.