This emoji was part of the proprietary / non-standardized emoji set first introduced by Japanese carriers like Softbank. These emojis became part of the Apple iPhone starting in iOS 2.2 as an unlockable feature on handsets sold in English speaking countries.
Maslow's (1943, 1954) hierarchy of needs is a motivational theory in psychology comprising a five tier model of human needs, often depicted as hierarchical levels within a pyramid. Maslow stated that people are motivated to achieve certain needs and that some needs take precedence over others.
Hierarchy. Hierarchy. 1. Any system of persons or things ranked one above the other. 2. In psychology and psychiatry, an organization of habits or concepts in which simpler components are combined to form increasingly complex integrations.ierarchy. Hierarchy. 1. Any system of persons or things ranked one above the other. 2. In psychology and psychiatry, an organization of habits or concepts in which simpler components are combined to form increasingly complex integrations.