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.
What a conceptâtake those ideas that the academics reject and make money off them. Particularly of note is the VALS Framework from Stanford Research Institute. VALS builds on Maslow's Holistic Dynamic Needs Hierarchy to segment the population by values, lifestyles, needs, beliefs, dreams, and points of view. This is what marketers call segmenting by psychographics, a highly effective tool for developing products and messages that appeal to our needs.