The first theory is quite popular and is taught in many Psychology classes. Maslow came up with his theory, which he called the need Hierarchy theory. This theory states that lower order needs have to be met, such as food and shelter before higher order needs such as friendships are met. Self-esteem needs . . . Social needs . . .
Safety needs . . .
Physiological needs First, physiological needs must be met. These are food and water and clothing. These needs must be met before any other. Next are safety needs. These include shelter from the elements.