As it is seen that behavioral factors are more effective than expected and predictable factors in the world of finance; to determine the behavioral factors, functioning mechanisms and evaluation of results about the factors has been entailed in one sense. In this study it is aimed to reveal the behavioral finance dimension of investment decisions and a behavioral finance scale has been tried to be created by the factor analysis study applied over the data obtained by field study performed on the ICT sector employees. The distinctive aspect of the study compared to the previous ones is that it has the features of the first known study in the literature made for determining the behavioral finance trends of investors employed in the ICT sector. The survey study made to determine the participants' behavioral biases in finance has been prepared in two propositions defining 42 biases of which 21 are defined in the literature. In the study, firstly concepts of investment, decision making and behavioral biases in finance has been outlined and then detailed with a field study. With the analyses, it is achieved that all 21 behavioral biases affected the investors’ investment behaviors middle or higher level. As a result of the factor analysis 12 factors has been detected. In terms of the findings obtained, this study is expected to contribute to the literature and to the subsequent studies.

Key Words: Behavioral Finance, Investment Psychology, Investment, Decision Making