Psychology exists and plays a significant part in investment decision making process. There are some processes of psychology that impact on decisions involving financial investment. While it is clear that majority of investors take their time to think hard for a long time before they make decisions on whether to engage in investment.The initial feeling of investor is significant. Investor behavior in markets are influenced depending on the objective of the investment, tools used to invest, work experience in the area of finance, the proportion to invest, expected returns and availability of information on investment and the investment duration. It is very well proved that human psychology influence investment decisions, strategies and psychological processes that are compounded by a number of other variables. This research focus on how three psychological constructs (Self-Monitoring) Emotional Intelligence and Big Five Personality might influence among the active market participants while making investment decisions.