What is meant by a hierarchy of need?

A hierarchy of needs refers to a psychological theory proposed by Abraham Maslow, which suggests that human motivations are organized in a pyramid structure. At the base are basic physiological needs (like food and shelter), followed by safety needs, social needs (like love and belonging), esteem needs, and finally self-actualization at the top. Individuals must satisfy lower-level needs before they can address higher-level needs. This framework helps to understand how people prioritize their motivations and goals.