The Effect of Managers' Ability on The Relationship Between the Quality of Accounting Information and Investor Behavior and Trading Performance

 In the behavioral financial paradigm, the human hypothesis as a rational being that always succeeds in optimizing its interests is questioned. Proponents of behavioral finance know that the knowledge of "psychological inclinations" in the field of investment is absolutely necessary and requires serious development of the field of study. Accordingly, the purpose of this study was to investigate the relationship between financial ratios as a measure of accounting information on the pattern of behavior and trading performance of investors and also to investigate the effect of managers' ability on this relationship. In order to achieve the research goal, 105 companies were selected from the companies listed on the Tehran Stock Exchange, by systematic elimination method and tested using EViews and Stata software. The results of testing the hypotheses have shown that among the components of financial ratios; There was a significant relationship between current ratio, current ratio, gross profit ratio, total debt to equity ratio, total debt to total assets ratio, return on assets ratio and earnings per share ratio with investors' trading behavior and performance. The present results showed that in the content of accounting information, especially using some financial ratios, investors' trading behavior and performance can be predicted. On the other hand, the findings indicate a significant effect of managers' ability on the relationship between financial ratios (current ratio, instantaneous ratio, gross profit ratio and earnings per share ratio) and the trading behavior and performance of investors.