Wikipedia.com
Maslow’s hierarchy of needs is an idea in psychology proposed by American psychologist Abraham Maslow in his 1943 paper “A Theory of Human Motivation” in the journal Psychological Review. Maslow subsequently extended the idea to include his observations of humans’ innate curiosity. His theories parallel many other theories of human developmental psychology, some of which focus on describing the stages of growth in humans. The theory is a classification system intended to reflect the universal needs of society as its base, then proceeding to more acquired emotions.
The hierarchy of needs is split between deficiency needs and growth needs, with two key themes involved within the theory being individualism and the prioritization of needs. While the theory is usually shown as a pyramid in illustrations, Maslow himself never created a pyramid to represent the hierarchy of needs. The hierarchy of needs is a psychological idea and also an assessment tool, particularly in education, healthcare and social work. The hierarchy remains a popular framework, for example in sociology research, management training, and higher education.
Excerpt from Wikipedia.com