To successfully engage and understand deliberation , I suggest that we first have to understand the elements of decision making. The elements are divided into several areas. The first area is the area of cognitive elements, which are the elements that interacts in the brain to facilitate a decision. Next is the area of the group in decision making - which elements are crucial for decision making in groups. Then comes the area of communication medium. In this area we will describe the elements that influence the transformation of information between the group members. In the next areas, we will deal with the psychological, sociological and organizational elements.