Decision-making is a complex activity taking place in every-day business and private situations. Simply defined, decision-making is a process of identifying the problem, determining potential solution options and choosing one amongst them. Research of decision-making has resulted in identification of various individual characteristics which affect an individual's decision-making process. Individual characteristics are typically classified as demographic, i.e. age, sex, race, ethnicity, marital status, level of education, social status, and psychological, such as personality type, locus of control, risk propensity, desire for success, subconscious influence and perception. Decision-making style refers to the existence of differences between individuals in terms of how they make decisions, and how the same person makes decisions in different ways according to the nature of decision and particular circumstances. Numerous classifications of decision-making styles have been developed during time, and the most widely accepted in the last twenty years is classification by Scott and Bruce, which distinguishes rational, intuitive, dependent, avoidant and spontaneous decision-making styles. In the last few decades, researchers have tried to investigate the existence of an interrelationship between different individual characteristics and decision-making styles. The goal of the research presented in this paper was to determine whether there are empirically verifiable relationships between decision-making style and selected demographic characteristics, psychological characteristics and academic succes of students. Tests conducted on a sample of 77 students of the Faculty of Economics in Split partially confirmed the existence of each of the relationships.