Under the rational approach to decision-making, decisions are generally made based on the quantitative data through a linear process. These models are quantitative and normative and tend to observe, identify, explain and predict choices3. They involve the logical completion of the stages including the identification and systematic analysis of the problem, right choice, and implementation. An important number of decisions made by managers in a day include repetitive decisions. Well-designed rational decision-making processes, especially in such decision-making activities, enable managers to engage in effective management. If this process is written and made accessible to everyone, it is turned into an important tool for others who deal with similar problems.

Herbert Alexander Simon is the founder and the most prominent name of the rational decision-making approach. However, some sources also refer to Chester Barnard, one of the most prominent figures in the behavioral school, as the pioneer of decision-making theory.