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The purpose of this paper is to investigate the information content in letters to shareholders in terms of business content, tone and types of business vocabulary.

The study uses multiple regression models to test the information content concerning business content, tone, and types of business vocabulary in letters to shareholders. Two textual analyses in accounting research dictionaries are used. Loughran and McDonald’s (2011) dictionary is used as a scheme to identify the positive and negative words, and Kothari et al.’s (2009) dictionary is used to identify the business vocabulary.

Letters to shareholders contain incremental information for investors. First, the results show that the market reacts negatively to the content of these letters. The more that business content is disclosed, the lower the abnormal returns. It can be seen that investors catch additional information from letters to shareholders. Second, investors in negative unexpected earnings firms tend to not trust the concentration of positive tone in the letters. Third, some types of business vocabulary in the letters have an influence on investors’ decisions. In addition, larger amounts of business content are seen to be negatively related to firms’ future performance.

Due to the effect of the content of letters to shareholders, the Securities Exchange Commission may wish to consider the results of this study before setting new disclosure regulations. Specifically, some inside information might have a negative effect on market returns.

The study indicates that letters to shareholders are a disclosure venue between companies and investors, where investors react to certain business vocabulary. Some business words are associated with lower future performance. Therefore, the market reacts negatively when these words are reported in the letters.

This study uses a simultaneous equations approach to examine the price‐earnings relationship of non‐U.S. firms that directly list their securities in U.S. capital markets or trade as American Depository Receipts (ADRs). The Hausman test shows that price changes and earnings changes are endogenously determined, thus the simultaneous equations approach is used to estimate the earnings response coefficient (ERC) and the returns response coefficient (RRC). Under the ordinary least squares (OLS) estimation, the parameter estimates are biased downward because the OLS fails to correct for endogeneity. In general, our results show that the joint estimation procedure mitigates some of the single‐equation bias. The estimated ERC and the RRC are higher under the three stage least regression (3SLS) than under the OLS regression. In addition, the product of the ERC and the RRC coefficients approaches its theoretical value of one when using the 3SLS estimation. The evidence also shows that institutional factors affect the way the market value information for these firms. We find that the ERC and RRC are insignificant for the common law non‐ADR firms and significantly positive for common law ADR firms.

The purpose of this study is to examine the use of accrual-based vs real earnings management (EM) by Greek firms, before and after the mandatory adoption of International Financial Reporting Standards (IFRS). The research is motivated by the fact that past studies have indicated the existence of significant levels of EM for Greece in particular before IFRS.

Accrual-based earnings management (AEM) is examined by assessing performance-adjusted discretionary accruals, while real earnings management (REM) is defined in terms of abnormal levels of production costs, discretionary expenses, and cash flows from operations, for a three-year period before and after the adoption of IFRS in 2005.

The authors find evidence on a statistically significant shift from AEM to REM after the adoption of IFRS, indicating the replacement of one form of EM with the other.

The validity of the results depends on the ability of the empirical models used to efficiently capture the existence of AEM and REM.

IFRS adoption aims to improve accounting quality, especially in countries with high need for such an improvement; however, the tendency to substitute one form of EM with another highlights unintended consequences of IFRS adoption, which do not improve the informational content of financial statements if EM continues under different forms.

Under the expectation that IFRS adoption should lead to improvements in accounting quality, this study examines whether IFRS actually led to a reduction of EM practices for a country with exceptionally high levels of EM before IFRS, by accounting for all possible forms of EM.

The purpose of this paper is to examine the factors affecting the relationships between CEO stock option compensation and earnings management.Design/methodology/approach – Regression of CEO stock option compensation and other factors on measures of discretionary accruals.Findings – A positive relationship between CEO stock option compensation and discretionary accruals was found, implying that earnings management is more likely where stock options are a larger part of CEO compensation. Earnings management is found to be moderated in large firms with stock option compensation and the relationship between stock options and earnings management has intensified in recent years. It was also found that stock options exacerbate earnings management in firms with growth opportunities.Research limitations/implications – Beyond the scope of this paper, these findings raise the following questions: What does the evidence of a size effect mean? Does it reflect information asymmetry, governance, external monitoring, or political risk? Why has the stock option effect on earnings management become more pronounced in recent years? Is it possible to mitigate the negative effects of option compensation on earnings management through the presence of stronger governance structures? Is it possible to mitigate the negative effects of option compensation on earnings management through the presence stronger governance structures? There are implications for compensation policies for corporate executives.Originality/value – This paper extends prior research on the relationship between CEO stock option compensation and earnings management. It provides new insight into the factors affecting this relationship.

Social factors can shape economic decisions. Corporate governance (CG) studies and guidelines usually neglect that the chief executive officer (CEO) and board members may be socially tied. This study investigates the effects of social ties between the CEO and board members on earnings management (EM).

The authors run a series of regressions using a sample of Brazilian companies listed on the Brazilian Stock Exchange [B]³ between 2011 and 2017 to assess the effect of the social ties between the CEO and board members on EM using a social ties index. The authors also employ five robustness tests to verify the consistency of results, including alternative proxies of EM and social ties and an estimation using fixed effects.

After developing and computing a social ties index between the CEOs and members of the board of directors (BD) and the fiscal council (FC), the study’s findings indicate that a significant level of social ties between the CEO and BD has a negative impact on EM. However, for FC members, the authors found non-significant results.

Unlike previous studies, the authors built a social tie index (STI) from five elements of social ties assessed in an environment with a two-tier board system. Results show that elements of social interactions and personal relationships can benefit the company, as a CEO's level of social ties with the BD reduces EM practices.

This paper aims to describe the characteristics and modeling of the variable pitch quadrotor. In a variable pitch quadrotor, unlike ordinary quadrotors that the force is generated by the rotors, the speed of the rotors is constant, and the force is generated by varying the pitch angle of blades.

In this paper, a sliding mode controller and an adaptive sliding mode controller are used to control the variable pitch quadrotor to have better performance.

The variable pitch mechanism has a wider control bandwidth, and it is able to produce a negative thrust that facilitates trajectory tracking and aggressive maneuvers. The simulation results indicate high performance of the proposed control scheme in presence of disturbance and changes in mass of the quadrotor.

The performance of the controllers for the variable pitch quadrotor is investigated through computer simulation with MATLAB software.

This paper sets out to test the effects of firms’ and industry's R&D intensity on persistence of abnormal earnings.

Ohlson's valuation model is used with pooled regressions along with Fama–Macbeth methodology on yearly regressions and partitioning on Herfindahl index to conduct the tests.

It was found that firms’ and industries’ R&D intensities are both positively correlated with persistence of abnormal earnings. The evidence suggests that the positive effect on earnings persistence caused by R&D's effectiveness in mitigating competition dominates the negative effect brought by more risk from R&D projects

The fact that the firm's own R&D investment leads to incremental earnings persistence beyond that of the industry suggests the importance of incorporating both industry and firm's R&D intensity in earnings persistence. While industry R&D investment leads to competition mitigation via creation of entry barriers, a firm's own investment in R&D differentiates its products from those of its competitors, and thereby results in further competition mitigation by creating replacement barriers.

Finally, since R&D intensity is correlated with earnings persistence, inclusion of R&D intensity in future earnings persistence studies may lead to better model specification by reducing the problem of correlated omitted variables.

The purpose of this paper is to examine the relevance of accounting variables to explain the evolution of a company's share price; and more specifically, we analyse the influence of cash flow and book value on the evolution of the share price, taking into account certain covariates which have traditionally been regarded as helping explain this effect.

A hierarchical Bayesian model is used to analyse the relevance of the accounting figures considered by the markets.

The empirical results obtained show that the firm size and the speed of asset turnover are a company's most relevant features, which is indirectly consistent with the theory of company life cycles.

The empirical results obtained are of value to support the validity of company life cycle theory.

Many studies examine the relative information content of earnings and cash flows from operations. Most studies find that earnings have higher information content than cash flows. An interesting question that follows is whether these findings hold after controlling the extremity of earnings and cash flows. The purpose of this paper is to examine the relative information content of earnings and cash flows in the following four different cases: first, moderate earnings vs moderate cash flows, second, extreme earnings vs moderate cash flows, third, moderate earnings vs extreme cash flows, and fourth, extreme earnings vs extreme cash flows.

To assess the relative information content of earnings and cash flows for each of the four cases mentioned above, the authors compare the explanatory power for regression of returns on unexpected earnings relative to regression of returns on unexpected cash flows. Therefore, the author compares the adjusted R2 of the model with earnings variables and the model with cash flows variables using Vuong's test, that examines the statistical significance of the difference between adjusted R2s of the rival (non-nested) models, and interpret a statistically higher adjusted R2 as an indicator for higher relative information content.

The results show that: first, when both earnings and cash flows are moderate, earnings are more highly associated with stock market price changes than cash flows, second, when both earnings and cash flows are extreme, earnings also have greater relative information content than cash flows, third, when the extremity differs between earnings and cash flows, the moderate variable is superior to the other extreme variable in explaining security returns. These results suggest that earnings are definitely more value relevant than cash flows. However, only in cases when cash flows from operations are moderate and earnings are extreme, cash flows possess higher information content than earnings.

The explanatory power for stock returns will be higher for earnings or cash flows depending on which is more highly persistent. This result reverses the conventional finding of the superiority of earnings over cash flows in explaining security returns.

In contrast to previous studies, the authors control for the extremity of earnings and cash flows when evaluating the relative information content of earnings and cash flows from operations.

In contrast to earlier studies, the most recent studies on the incremental value relevance of earnings and cash flows from operations find that both earnings and cash flows have incremental value relevance beyond each other. An interesting question that follows is whether these findings hold after controlling the extremity of earnings and cash flows. This study, therefore, aims to examine the incremental value relevance of earnings and cash flows in the following four cases: moderate earnings and moderate cash flows, moderate earnings and extreme cash flows, extreme earnings and moderate cash flows and extreme earnings and extreme cash flows.

To evaluate the incremental value relevance (information content) of earnings and cash flows for each of the four cases mentioned above, we examine the statistical significance of the slope coefficients for regression of returns on both unexpected earnings and unexpected cash flows from operations.

The results show that (i) both moderate and extreme earnings have incremental value relevance beyond both moderate and extreme cash flows, (ii) moderate cash flows have incremental value relevance beyond both moderate and extreme earnings and (iii) extreme cash flows lack incremental value relevance beyond moderate earnings; however, they (extreme cash flows) have incremental value relevance beyond extreme earnings. These results suggest that earnings and cash flows have incremental value relevance. However, only in cases when cash flows are extreme and earnings are moderate, cash flows do not possess incremental value relevance. In further analysis, we find that the value relevance for cash flows and earnings decreases when they are extreme and transitory. Moreover, the value relevance for cash flows increases when they are moderate (not extreme) and the other competing measure (earnings) is transitory and extreme.

The results support the idea that earnings and cash flows from operations complement each other in explaining variation in returns. However, when cash flows are extreme and less informative, investors rely more on earnings in firm valuation, especially when earnings are moderate. Because earnings are unlikely to persist to be permanent across the years, these results can be interpreted as indicating that cash flows and earnings information are used jointly by investors.

In contrast to previous studies, we control for the extremity of earnings and cash flows when evaluating the incremental value relevance of earnings and cash flows from operations.