A theory is essentially a set of concepts, propositions and ideals that have a direct relationship (Mullins, 2005). Therefore, the main approach used in the development of a theory is correlation which often assumes a causality relationship.

The uptake of nutrients is important for the development of a functioning body. Essential vitamins are needed for the completion of some functions of the body. The body cannot make most of the vitamins in the body.

Should a company outsource? Is the company not causing loss of employment to the local community in order to save costs. These are some of the questions that are often posed by the critics of outsourcing.

Just like in a ladder, the lower rungs have to be stepped on before proceeding to the next runs that are located at the higher levels (Myers, 2004). There are different motivations behind the invention of the hierarchy of needs. This paper will focus on the hierarchy of needs and the motivation behind the development of the hierarchical representation of needs.