Tesis ini meneliti mengenai peran traits kepribadian terhadap gaya pengambilan keputusan pada mahasiswa. Teori traits yang digunakan dalam penelitian ini adalah Five-Factor Model of Personality (McCrae & Costa (1990), dengan lima buah faktor yaitu neuroticism, extraversion, openness to experience, agreeableness, dan conscientiousness. Gaya pengambilan keputusan adalah kecenderungan yang dimiliki seseorang dalam proses pengambilan keputusan dalam berbagai situasi (Scott & Bruce, 1995), dan terdiri dari gaya rasional, dependen, intuitif, avoidant dan spontaneous. Penelitian ini adalah penelitian kuantitatif dengan desain noneksperimental dan cross-sectional. Hasil penelitian menunjukkan bahwa terdapat korelasi yang signifikan antara traits kepribadian dan gaya pengambilan keputusan. Traits kepribadian juga memberikan kontribusi sebesar 10% hingga 23.3% terhadap munculnya gaya pengambilan keputusan.

---

The focus of this thesis is to study the role of personality traits in decision makingstyles in undergraduate students. The trait theory used in this study is the Five-Factor Model of Personality (McCrae & Costa, 1990), which consists of neuroticism, extraversion, openness to experience, agreeableness and conscientiousness. Decision making-style is defined as an individual's tendency to behave when faced with decision making process (Scott & Bruce, 1995), and consists of rational, intuitive, dependent, avoidant and spontaneous styles. This study is a quantitative research with a non-experimental and cross-sectional design. This study shows that there are significant correlations between personality traits and decision making-styles. Furthermore, personality traits also contribute, between 10% to 23.3%, to the emergence of decision making-styles.