Decision-making involves choosing between several possible alternatives which have decision-making as the goal. These alternatives depend on the situation, the type of problem and the interaction with the relevant influencing factors in the decision-making process. The process of making a quality decision considers all the limitations in the decision-making process so that the decision makers are able to make a rational choice. Decision-making is influenced by internal and external factors. Internal factors include the individual's personal influence, emotions, attitudes and reflections while external factors include parents and family, friends, state and institutional support, economic situation and the influence of one's partner. The process of rational decision-making needs to involve both external and internal factors because their synergy is necessary for the analytical alignment of rational and intuitive thinking. The goal of this research is to analyze and systematize all these influencing factors in decision-making situations based on the example of the general population and the homeless people. The hypotheses stated in this paper will try to connect to theoretical postulates in the areas of decision-making and rationality in order to interpret possible differences or deviations of the expectations from the results.