Empirical Studies in Financial Accounting

Abstract To explain the estimation of conservatism as a limiting covenant in accounting, the current paper discussed Basu (1997) conservatism model and Nichols (2010) generalized conservatism model and examined the problems about these models  as regards the validity and generalizability of the results of the research on this topic .Accordingly, the discussed problems were explained and the solutions for solving these problems and upgrading the model to estimate conservatism were presented. The data from 2006 to 2016 on 87 corporations were used to carry out the investigations. Also, in addition to the static routine estimator, the dynamic panel estimator (the GMM-sys method) was used to test and estimate the models. The current research results revealed that the new modified conservatism estimation  model yielded more appropriate results than the original Basu model and Nichols generalized model. Moreover, it indicated that the dynamic method of model estimation is more suitable than the static one. Finally, the current research showed that the results of the previous research conducted using Basu model to measure conservatism should be considered more cautiously and their application in the capital markets calls for re-examination

Abstract Earning as an important item of financial statement is considered by many researchers. Many researches in different aspect of earning show the extreme important of it. Here,  we attempt to consider  earning persistence  as a basic and effective factor in making decision and stock price so we investigate the explanatory power 's of earning (include three level of earnings:  operating  earnings, net profit and earnings forecast) in  stock price. Book value as an important factor is considered in the recent decade and some stock evaluation models use book value as a relevant factor .we also investigate the explanatory 's power of book value in stock depend on higher or lower earning persistence. Our results show, when earning persistence increase, the explanatory's power of earning in stock price increase too.  These evidences accompany our hypothesis in different level of earnings. But we could not find any evidence about contemporary role of book value and earning persistence in stock price.