In 1943, Dr. Abraham Harold Maslow's article “A Theory of Human Motivation” appeared in Psychological Review, which was further expanded upon in his book: Toward a Psychology of Being. In this article, Abraham H. Maslow attempted to formulate a needs-based framework of human motivation and based upon his clinical experiences with humans, rather than prior psychology theories of his day from authors such as Freud and B.F. Skinner, which were largely theoretical or based upon animal behaviour. From this theory of motivation, modern leaders and executive managers find means of motivation for the purposes of employee and workforce management. Abraham Maslow's book Motivation and Personality (1954), formally introduced the Hierarchy of Needs.
Maslow's Hierarchy of Needs is often depicted as a pyramid consisting of five levels: the four lower levels are grouped together as being associated with physiological needs, while the top level is termed growth needs associated with psychological needs. Deficiency needs must be met first. Once these are met, seeking to satisfy growth needs drives personal growth. The higher needs in this hierarchy only come into focus when the lower needs in the pyramid are satisfied. Once an individual has moved upwards to the next level, needs in the lower level will no longer be prioritized. If a lower set of needs is no longer being met, the individual will temporarily re-prioritize those needs by focusing attention on the unfulfilled needs, but will not permanently regress to the lower level. For example, a businessman at the esteem level who is diagnosed with cancer will spend a great deal of time concentrating on his health (physiological needs), but will continue to value his work performance (esteem needs) and will likely return to work during periods of remission.
Physiological Needs
These are biological needs. They consist of needs for oxygen, food, water, and a relatively constant