Final answer:
Maslow's hierarchy of needs ranks human needs from the basic to the complex in a pyramidal structure with physiological needs at the base, ascending through safety, social, and esteem needs, to self-actualization at the top, with some models also including cognitive, aesthetic, and self-transcendence needs.
Step-by-step explanation:
Maslow's hierarchy of needs is a theoretical framework in psychology that outlines the different levels of human needs, from basic to complex. The hierarchy depicts these needs in the shape of a pyramid, consisting of five primary tiers. At the base, representing the most fundamental needs, are physiological needs, such as food, water, and shelter. Once these are met, an individual can focus on the second level, safety and security needs. The middle tier addresses our social needs for love and belonging.
Above this, esteem needs come into play, involving our desire for self-worth and respect from others. The peak of the pyramid is self-actualization, where one reaches their fullest potential. Some versions of the pyramid also include cognitive and aesthetic needs between esteem and self-actualization, while others suggest an additional level named self-transcendence, going beyond personal achievement to find meaning in something greater than oneself.