IntroductionThe decision consists in selecting an action from a series of actions that solves a given problem, that prevents a problem from occurring or that forces the application of new ideas for development. The need to understand decision making is increasing because the complexity of modern organizations is increasing and because the effectiveness of modern organizations depends on decisions made by managers. The question is how to select the most appropriate action to solve the problem while satisfying all stakeholders. Many methods have been developed to simplify the decision making process. In this article, the rational model of decision making will be discussed first. Then, some of the factors causing the deviation in the rational model will be clarified. Rational Model of Decision Making The reason why we discuss this model of decision making first is because this model is considered the ideal method of making decisions for organizations. It is assumed that individuals usually maximize entrepreneurs and that decisions are made through a step-by-step procedure that is logical and linear. To make a decision according to this model it is necessary to start from the beginning by collecting all the related information. Then, this information needs to be analyzed and then all the solutions are suggested. These solutions are then analyzed and all the negative and positive results of each of them are considered according to criteria to compare these solutions to arrive at the best decision. The rational model places no limit on the time or costs needed to achieve the final result. objective. Its main purpose is to arrive at a profit-maximizing decision that respects other pre...... middle of paper ...... beliefs of the group, to ensure that this does not disrupt the consensus of the group as a whole. complex. This pressure often takes the form of urging the dissident member to remain silent if he or she cannot match his or her beliefs with those of the rest of the group. The type of leadership skills and practices can lead to the deviation of the rational model of decision making. Group pressures to maintain group illusions are sometimes encouraged by various leadership practices, some of which involve subtle ways of making it difficult for those who question the initial consensus to suggest an alternative and raise critical questions. The group's agenda can be easily manipulated by a kind leader, often with the tacit approval of the members, so that there is simply no opportunity to discuss the inconveniences of a seemingly satisfactory action plan. .