نشریه نظریه های نوین حسابداری
سال سوم شماره 4 (پیاپی 10، زمستان 1392)

The aim of this article, study of the relationship between conservatism and manager's anticipation profit of the accepted companies in Tehran stock exchange. For this reason, we selected 111 companies among the accepted companies in stock exchange. For quantifying theconservatism, we used three criteria asnet assets market value to net assets book value, operational accrual and non-operational accrual items. The research hypothesis is investigated in each industry and all industries as a whole.
The results show that,there is a significant relationship between net assets market value to net assets book valueand maneger's anticipated profit, but it is weak. Furthermore,the results show that there is not a relationship betweenoperational accrual and non-operational accrual items with manager's anticipated profit. Generally, there is not any relationship between accounting conservatism with manager's anticipated profit.

The liquidity and accounting issues are naturally related Accounting information can influence the stock's information environment Accounting information can reduce information asymmetry in the market, this information can improve stock liquidity.In this study, the quality of accounting information in addition to the impact of illiquidity on stock returns is also. Increase the quality of accounting information, businesses can reduce systemic liquidity Tvandrysk Accounting variables are able to evaluate the business enterprise and capital costs through their impact on various aspects of liquidity affect.
This study is among the first studies to examine the impact of accounting information quality and lack of liquidity on stock returns in Tehran Stock Exchange market deals.The survey of 135 companies over a three year period (1387-1389) have been chosen. The data were calculated using Excel software program and 6Eviews 18Spss are analyzed. And the hypothesis using integrated regression without fixed effects is examined. The results suggest that the relationship between the quality of accounting information and returns are negative Mnadarvly But the positive impact of illiquidity Brbazdh Mnadarast and simultaneous operation of these two illiquidity on the yield and quality of accounting information is significant and positive.

The study shows the impact of cash flow on firm value in information asymmetry situation in firms listed in Tehran Stock Exchange during a 6-years period. In this research Venkatesh &Chiang (1986) model has been used to calculate information asymmetry. Model whit panel data based on pattern provided by pinkowits et al., (2006) has been used to determine relationships between variables. For data analysis the linear regression with use of panel data has been employed. The result show that between cash flow and firm value in information asymmetry situation statistically significant relationship does not exist in the sample firms. Results of the research also indicate the impact of earnings before interest, net assets, the firm's market value (market value of equity book value of debt) and cash on a firm's value.

This study investigated the effect of audit quality on Information Asymmetry in Tehran Stock Exchange. To determinate of auditor quality, using three metrics of Auditor firm , Auditor Tenure and Adjusted Jones model , and Bid-ask spread, we use for measure of Information Asymmetry. In this study, we investigated the listed companies in Tehran stock exchange, over the period of 2005-2011. The method used in this research for testing the hypothesis is panel data.The result on the basis of the 126 companies of Tehran stock exchange, and using data regression method with Eviews program, shows that auditor quality and Auditor Tenure have positive effective on Information Asymmetry and Information Asymmetry increase with increasing in each of them. Also the results show that there is a negative relationship between Auditor firm and Information Asymmetry, and when the audit is carried out by the audit organization decreased the amount of Information Asymmetry.

One of the most important purposes of the International Accounting Standards is presenting useful information for decision making. This purpose has been considerably emphasized base on usefulness of financial information for predicting in different standards. In the present study, net profit and book value of the companies is regarded as the representatives of the accounting numbers and their ability have been examined for clarification the market value of the companies in after and before the period of Accounting Standards Requirements. Sample of study consists of 86 companies among accepted companies in Tehran stock market and the period of the study contains 16 consecutive years from 1994 to 2009 which consist of two eight-year periods prior to the Accounting Standards Requirements (1994-2001) and the period after Accounting Standards Requirements (2002-2009). The results of the study confirmed information content of accounting profit. The results also represented that the requirements of Accounting Standards has had significant positive impacts on information content of accounting profit. According to the results, the book values of affiliate's ´wages hasn´t have information content and the requirements of Accounting Standards hasn´t affected on it.