Law, state power, and taxation in Islamic history

The ruler's power varied greatly in Islamic history over time and space. We explain these variations through a political economy approach to public finance, identifying factors affecting economic power and its constraints. An influential interest group capable of affecting the ruler's power was the legal community (‘ulamā’). This community could increase the ruler's ability to extract a surplus from the citizenry by conferring legitimacy, thereby lowering the cost of collecting taxes. It could also limit power through legal constraints on taxation. We show how changes in legitimacy and legal constraints affected the economic power of rulers in representative episodes of Islamic history and identify general trends and dynamic processes underlying the relationship between the state and the legal community.     

Accounting conservatism and voluntary corporate governance mechanisms by Australian firms

This study examines the relationship between voluntary adoption of selected corporate governance mechanisms and accounting conservatism for a sample of firms listed on the Australian Securities Exchange (ASX) over the 11‐year period prior to the promulgation of the ASX Corporate Governance Council Good Governance Principles and Best Practice Recommendations in 2003. Using four accounting and market‐based accounting conservatism measures, our results provide evidence of both conditional and unconditional conservatism in accounting reporting for Australian firms. We find that voluntary audit committee formation, increasing board independence and decreasing board size are positively associated with unconditional accounting conservatism and negatively related to the degree of conditional conservatism. Our results support the contention that firms voluntarily adopting perceived best practice corporate governance mechanisms employ unconditional accounting conservatism as a complimentary agency control device and are consistent with the observed negative association between the unconditional and conditional forms of accounting conservatism practice.     

How long must a firm be great to rule out chance? Benchmarking sustained superior performance without being fooled by randomness

Although sustained superior firm performance may arise from skillful management or other valuable, rare, and inimitable resources, it can also result from randomness. Studying U.S. companies from 1965–2008, we benchmark how long a firm must perform at a high level to be confident that it is something other than the outcome of a time‐homogeneous stationary Markov chain defined on the state space of percentiles. We find (a) the number of sustained superior performers in Compustat, measured by ROA and Tobin's q, exceeds the number of false positives we would expect to be generated by such a process; yet (b) the occurrence of false positives is often enough to fool many observers, so (c) the identification of sustained superior performers requires particularly stringent benchmarks to enable valid study. Copyright © 2011 John Wiley & Sons, Ltd.     

Why do over-deviated firms from target leverage undertake foreign acquisitions?

This paper examines how deviation from firms’ target leverage influences their decisions on undertaking foreign acquisitions. Using a sample of 5746 completed bids by UK acquirers from 1987 to 2012, we observe that over-deviated firms are more likely to acquire foreign targets. Consistent with co-insurance theory, we find that over-deviated firms engage in foreign acquisition deals to relieve their financial constraints and to mitigate their financial distress risk. We also note that foreign acquisitions enhance over-deviated firms’ value and performance, measured by Tobin’s q and return on assets (ROA) respectively. These findings support the view that over-deviated firms pursue the most value-enhancing acquisitions. Overall, this paper suggests that co-insurance effects, value creation and performance improvements are the main incentives for over-deviated firms’ involvement in foreign acquisitions.     

Tests for structural change,aggregation, and homogeneity

Structural change can be considered by breaking up a sample into subsets and asking if these can be aggregated or pooled. Strategies for constructing tests for aggregation and structural change in this setting have not received sufficient attention in the literature. Our methodology for testing generalizes to multiple regimes a discussion of Pesaran et al. (1985) for the case of two regimes. This treatment permits a unified approach to a large number of testing problems discussed separately in the literature, as special cases or as parts of a test of homogeneity. We also provide a simple alternative to much more complex testing strategies currently being researched and developed in testing for structural change.     

L'Hypothése de la Distribution Normale dans le cas d‘Événements Simultanes

L'hypothèse de la distribution normale lors de l'analyse des données, permet entre autres, l'utilisation des tests statistiques classiques, ce que n'autorise pas une distribution asymétrique ou aplatie au centre et allongée awe extrémités. Ce travails'adresseprécisé-ment à la forme de la distribution des résidus quotidiens dans le cas d'évènements simultanés, e'est-d̀-dire ceux affectant un certain nombre d'entreprises au mǐme moment, puisque aucune étude ne s'est préoccuppée, à notre connaissance, de ce phénomène. Nos résultats semblent indiquer que les hypothèses de la distribution normale et de non-aplatissement des résidus quotidiens dans le cas d'événements simultanés sont irréalistes, le sort de l'hypothèse d'asymétrie ne semblepas clair surtout à un intervalle de condiance de 99 pourcent. L'utilité des tests statistiques classiques se trouve, par conséquent, très minimisée. Ces tests auront, en effet, tendance à rejeter l'hypothèse de performance normale mǐme en l'absence de toute performance anormale. Abstract The hypothesis of normal distribution in the analysis of data permits, among other things, the use of classical statistical tests. This is not allowed by a distribution which is asymetric or flat at the center and extended at the extremities. This paper deals specifically with the shape of the distribution of daily remainders in the case of simultaneous events which affect a number of businesses at the same time because, to our knowledge, no study has previously dealt with this phenomenon. Our results seem to indicate that the hypothesis of normal distribution and of the non-flattening of daily remainders in the case of simultaneous events are unrealistic and the outcome of hypothesis of asymetry does not seem clear especially at a 99% confidence interval. As a result, the use of classical statistical tests is minimized. In effect, these tests will generally reject the hypothesis of normal performance even in the absence of any abnormal performance.     

Corporate Internet Disclosure in the Arabian Gulf： An Empirical Examination of Determinants and Attributes

This paper investigates and reports on the extent and nature of corporate internet disclosure and the determinants of internet financial disclosure （IFD） by companies listed in three Gulf Corporation Council （GCC） countries. This paper uses data from 207 listed companies in Muscat Securities Market （MSM）, Dubai Financial Market （DFM）, and Qatar Exchange （QE）. Binary logistic regression analysis is used to examine the determinants of IFD. Kruskal-Wallis test is used to examine the differences in disclosure characteristics among the three countries. The results of this study reveal that firm size is the major factor influencing intemet financial reporting in the GCC. The results reveal that the three countries differ significantly in all the disclosure attributes with the exception of the existence of email link. This paper extends the stream of research that confirms the widespread use of internet in disclosing financial information. The results are consistent with previous literature that corporate size is a major determinant of internet financial reporting. This paper provides insights into corporate internet disclosure in the GCC that will benefit all stakeholders with an interest in corporate reporting in this important region of the world.