Though Maslow's hierarchy makes sense intuitively, little evidence supports its strict hierarchy.
Actually, recent research challenges the order that the needs are imposed by Maslow's pyramid. As an example, in some cultures, social needs are placed more fundamentally than any others. Further, Maslow's hierarchy fails to explain the "starving artist" scenario, in which the aesthetic neglects their physical needs to pursuit of aesthetic or spiritual goals. Additionally, little evidence suggests that people satisfy exclusively one motivating need at a time, other than situations where needs conflict.
While scientific support fails to reinforce Maslow's hierarchy, his thery is very popular, being the introductory motivation theory for many students and managers, worldwide. To handle a number of the issues of present in the Needs Hierarchy, Clayton Alderfer devised the ERG theory, a consistent needs-based model that aligns more accurately with scientific research.