The Maslow's Hierarchy of Needs five-stage model below (structure and terminology - not the precise pyramid diagram itself) is clearly and directly attributable to Maslow; later versions of the theory with added motivational stages are not so clearly attributable to Maslow. These extended models have instead been inferred by others from Maslow's work. Specifically Maslow refers to the needs Cognitive, Aesthetic and Transcendence (subsequently shown as distinct needs levels in some interpretations of his theory) as additional aspects of motivation, but not as distinct levels in the Hierarchy of Needs. Each of us is motivated by needs. Our most basic needs are inborn, having evolved over tens of thousands of years. Abraham Maslow's Hierarchy of Needs helps to explain how these needs motivate us all. Maslow's Hierarchy of Needs states that we must satisfy each need in turn, starting with the first, which deals with the most obvious needs for survival itself. Only when the lower order needs of physical and emotional well-being are satisfied are we concerned with the higher order needs of influence and personal development. Conversely, if the things that satisfy our lower order needs are swept away, we are no longer concerned about the maintenance of our higher order needs. Maslow's original Hierarchy of Needs model was developed between 1943-1954, and first widely published in Motivation and Personality in 1954. At this time the Hierarchy of Needs model comprised five needs. This original version remains for most people the definitive Hierarchy of Needs.1. Biological and Physiological needs - air, food, drink, shelter, warmth, sex, sleep, etc. 2. Safety needs - protection from elements, security, order, law, limits, stability, etc.3. Belongingness and Love needs - work group, family, affection, relationships, etc.4. Esteem needs - self-esteem, achievement, mastery, independence, status, dominance, prestige, managerial responsibility, etc. 5. Self-Actualization needs - realising personal potential, self-fulfillment, seeking personal growth and peak experiences.
