This book is a summary of Maryam Sedaghati- Kasbakhi's dissertation and research.This book is written about the history of empathy, definition of empathy, dimension of empathy, steps of empathy , nursing theories about empathy , factors affecting empathy, the difference between empathy, empathy and compassion, the consequences of empathy, empathy and oncology nurse and empathy research. Definition of empathy:The primary definitions of empathy are conceptualized as the internalization of another person's emotions which determined by observation or self-projection. Dimension of empathy:Empathy is a complex concept that has different dimensions such as cognitive, emotional, moral and behavioral.Steps of empathy In the process of empathy, four steps for empathy are described,...