Vol. 5, Issue 6, Part C (2019)

Abstract
Decision making is one of the most central processes in organizations and a basic task of management at all levels. Decision makingdecision makingMaking choices among alternative courses of action, including inaction. refers to making choices among alternative courses of action-which may also include inaction. While it can be argued that management is decision making, half of the decisions made by managers within organizations. Since strategic decision not only affects the organization in which they are taken but also the society (Colignon and Cray, 1980). Decisions are regular part of human everyday life and they strongly influence either life of individuals, or even the lives of many others, depending on the position of decision maker. Understanding of the decision-making processes could help us in preventing bad decisions and make the rational decision. The rational decision-making modelrational decision-making modelA series of steps that decision makers should consider if their goal is to maximize their outcome and make the best choice. describes a series of steps that decision makers should consider if their goal is to maximize the quality of their outcomes. In other words, if you want to make sure that you make the best choice, going through the formal steps of the rational decision-making model may make sense. After discuses definition, process and rational decision in this paper we will study what the factors that effect on the decision making. So the research question is: How can make the rational decision making? What the main steps should follow? And what the main factors that effect on rational decision making? The objective of this study is to discuss the factors that effect on rational decision making to know the most important role of rationality in decision making.