Not much. Most of the evidence was Maslow's own experience, rather than any controlled experiments. Maslow thought his "hierarchy of needs'' as mostly an idea, rather than a full blown theory. read more
Maslow's Heirarchy of Needs (shown below) is a popular concept and is often taught in basic psychology courses, and often less objectively taught in Business and Marketing courses. A common problem with Maslow's Hierarchy is the difficulty of testing the theory and the ordering and definition of needs. read more
Watch The Video About Maslow's Hierarchy of Human Needs: With the goal of guiding families toward a sense of hope and healing in the midst of immense suffering, Jacob’s Heart provides love, belonging, counseling and other emotionally enriching services. read more