Abraham Maslow's Hierarchy of Needs

In his 1970 book, Motivation and Personality, Abraham Maslow outlined five key human needs that must be satisfied.

Although Maslow was not the first person to examine human needs, he did so in a pioneering way.

Whereas Freud studied mentally ill patients and Skinner studied animals to reach their conclusions, Maslow studied effective and successful people such as Albert Einstein, Jane Addams, Eleanor Roosevelt, and Frederick Douglas.

It is due to this that many consider Maslow's results as more accurate and more applicable to what humans really need.