SOCIAL REPUBLIC OF VIETNAM Independence - Freedom - Happiness NEW CONTRIBUTIONS OF THE THESIS Thesis title: The effect of big five traits on investment intentions: the role of mediators of risk perception, uncertainty perception and investment performance Major: Business Administration Code: 9340101 PhD Student: Nguyễn Hữu Tho Course: 2014 School: University of Economics Ho Chi Minh City Thesis instructors: Associate Professor, PhD Trần Hà Minh Quân PhD Ngô Quang Huân Key words: Big Five traits, investment performance, investment intention, risk perception, uncertainty perception The Thesis had contributions to the theory and practice as: Contributions to the theory: (i) Develops a model that combines three theories: Trait Theory, Finance Theory and Theory of Planned Behavior (TPB) Importantly, this study addresses the importance of Finance Theory as a mediator between Trait Theory and TPB (ii) Examines the effect of risk perception, and uncertainty perception on investment results, and this impact is the mediator between Big Five Traits and investment intentions (iii) Develops the scales of risk perception and uncertainty perception about stock investment in the Vietnam stock market Particularly, this study addresses the difference between perceived risk and uncertainty and investigates this difference through an empirical study 2 Contributions to the practice: (i) The result helps individual investors have a better understanding of their traits and the importance of perceived risk and uncertainty and investment performance in stock investment decisions in the future (ii) The distinction between risk and uncertainty perceptions gives policymakers insights into the stock investment decisions made by individual investors: they may still buy stocks even when they not fully know on the probability of success of this purchase It may infer that investors either rely on the decisions made by other people or are overconfident in their abilities Clearly, behavioural biases still exist in individual investors’ decisions in the 21st century Policy makers should pay attention to this issue to have appropriate training programs, helping investors avoid biases in decision-making (iii) Investors should divide 10-20 percent of total portfolio value into risky stocks This allocation can prevent from large losses in the face of a strong drop in stocks (iv) Policymakers should develop and supplement securities policies and laws, especially for stocks that are warned, controlled, restricted or suspended It needs more penalties for the listed companies that provide incomplete or inaccurate information to the public PhD Student (signed) Nguyễn Hữu Tho ... stocks even when they not fully know on the probability of success of this purchase It may infer that investors either rely on the decisions made by other people or are overconfident in their abilities...2 Contributions to the practice: (i) The result helps individual investors have a better understanding of their traits and the importance of perceived risk and uncertainty... decisions in the future (ii) The distinction between risk and uncertainty perceptions gives policymakers insights into the stock investment decisions made by individual investors: they may still