21. As a person moves up Maslow's hierarchy of needs , eventually they may find themselves reaching the summit self-actualization. 22. Alderfer further developed Maslow's hierarchy of needs by categorizing the hierarchy into his "'ERG theory "'( Existence, interpersonal relationships. 23. Food deprivation is regarded as a deficit need in Maslow's hierarchy of needs and is measured using famine scales. 24. Its most general usage is to express the hierarchy of needs : with physical and mental health at the root. 25. The " hierarchy of needs " is based on five levels of needs, organized accordingly to the level of importance. 26. While in the United States, Goldstein coined the phrase " Maslow's Hierarchy of Needs , but differed from Goldstein's original concept. 27. His need theory, Maslow's Hierarchy of Needs , is thought to help a person achieve the unsatisfied needs of one's self. 28. A famous content theory would be Maslow's Hierarchy of Needs , and a famous process theory would be the equity theory. 29. Yet play seems to be a normal activity with animals who occupy the higher strata of their own hierarchy of needs . 30. Without the dangers of drugs and violence, the brothers are free to deal with issues higher on Maslow's hierarchy of needs .
