From a psychological perspective, it is necessary to examine individual decisions in the context of a set of needs, preferences an individual has and values they seek.
From a cognitive perspective, the decision making process must be regarded as a continuous process integrated in the interaction with the environment.
From a normative perspective, the analysis of individual decisions is concerned with the logic of decision making and rationality and the invariant choice it leads to.
Yet, at another level, it might be regarded as a problem solving activity which is terminated when a satisfactory solution is reached. Therefore, decision making is a reasoning or emotional process which can be rational or irrational, can be based on explicit assumptions or tacit assumptions.
One must keep in mind that most decisions are made unconsciously. Jim Nightingale, Author of Think Smart-Act Smart, states that "we simply decide without thinking much about the decision process." In a controlled environment, such as a classroom, instructors encourage students to weigh pros and cons before making a decision. However in the real world, most of our decisions are made unconsciously in our mind because frankly, it would take too much time to sit down and list the pros and cons of each decision we must make on a daily basis.
Logical decision making is an important part of all science-based professions, where specialists apply their knowledge in a given area to making informed decisions. For example, medical decision making often involves making a diagnosis and selecting an appropriate treatment. Some[which?] research using naturalistic methods shows, however, that in situations with higher time pressure, higher stakes, or increased ambiguities, experts use intuitive decision making rather than structured approaches, following a recognition primed decision