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.
Abraham Maslow. 1  Born 1908, in a slum in Brooklyn, New York. 2  His parents were Russian Jews - he faced anti-Semitism as a child and in academia. 3  Had an IQ of 195, but flunked some undergraduate courses - he couldn't focus on anything that didn't interest him. 4  He was shy and reportedly very humble, even after he became famous.