Generalized habit formation in an Inverse Almost Ideal Demand System: An application to meat expenditures in the U.S.

The Inverse Almost Ideal Demand System (IAIDS) model of Moschini and Vissa (1992) and Eales and Unnevehr (1994) is extended to include: (1) general, nonlinear, nonadditive habit effects; and (2) a specification for habit stock terms that allows purchases from the distant past to influence current consumption (long memory). The resulting models are compared with a linear habit effects model and a static specification. The empirical estimation is on U.S. quarterly meat expenditures (1961–1993), with each model being subjected to a battery of misspecification tests. Results of these tests, along with tests of homogeneity and symmetry restrictions, indicate clearly that the most generalized dynamic specification-the one with nonlinear, nonadditive long-memory habit stock effects-is preferred. Furthermore, persistence effects are found to be qualitatively important in that flexibility, consumption scale, and habit flexibility estimates differ, in some instances substantially, between alternative specifications.     

On the asymmetry of the symmetric MAPE

Several authors have suggested that the use of the mean absolute percentage error (MAPE) as a measure of forecast accuracy should be avoided because they argue it treats forecast errors above the actual observation differently from those below this value. To counter this, the use of a symmetric (or modified) MAPE has been proposed. This paper shows that, in its treatment of negative and positive errors, the proposed modification is far from symmetric, particularly where these errors have large absolute values. It also shows that, under some circumstances, a non-monotonic relationship can occur between the symmetric MAPE and the absolute forecast errors.     

Effects of decoupling on the mean and variability of output

The influence of inputs on output risk in the context of agriculturalproduction decisions taken by non-risk neutral agents has beenignored by previous research assessing the effects of decoupledincome support payments in a deterministic world or risk-neutralframework. We study the impacts of decoupled payments on inputuse and on output mean and variance. Our theoretical frameworkfor studying agricultural producers' responses to lump sum paymentsallows for both output and price uncertainty and economic agents'risk attitudes. Results show the importance, in a non-risk neutralscenario, of considering the influence that economic agentshave on the stochastic component of output through input use.Our empirical application uses Kansas farm-level data to illustratethe model.     

The influence of corporate governance mechanisms on the quality of financial reporting and auditing: Perceptions of auditors and directors in Singapore

This study uses two hypothetical cases to examine the perceptions of auditors and directors in Singapore about corporate governance practices relating to the quality of financial reporting and auditing. In the first case, the strength of the audit committee, the existence of an internal audit function and the strength of a corporate code of conduct were manipulated. All three variables were perceived to have some influence on financial reporting and audit quality. However, some interesting differences were found between the perceptions of auditors and directors. Auditors place more weight on the internal audit function, possibly due to their familiarity with the role that internal audit can play in reducing audit risk and enhancing controls. Directors have more confidence in board enforcement of a strong code of conduct, possibly reflecting the view that this encourages staff to adhere to higher ethical standards. In the second case, audit partner rotation, outsourcing of internal audit services and whether the audit firm audited all companies within a group were manipulated. Auditors believed that their ability to resist management pressure was enhanced when they audited all companies within the group. No significant differences were found for the other variables, suggesting that neither group believes that these practices impair audit independence.     

Schumpeter,Keynes and the theory of economic evolution

The contribution deals with a nonlinear dynamic macro-economic model which is used for simulation runs. Conditions and model specifications allowing for global stability are investigated and tested. Based on this some well-known facts as Schumpeterian long-wave phenomena, Keynesian unemployment, productivity growth effects are simulated. Moreover specifying an instrumental variable for state interventions policy issues are also discussed. With this runs it is shown that minor changes of parameters may provide totally different outcomes and different economic developments.     

Short-term debt maturity,monitoring and accruals-based earnings management

Most prior studies assume a positive relation between debt and earnings management, consistent with the financial distress theory. However, the empirical evidence for financial distress theory is mixed. Another stream of studies argues that lenders of short-term debt play a monitoring role over management, especially when the firm’s creditworthiness is not in doubt. To explore the implications of these arguments on managers’ earnings management incentives, we examine a sample of US firms over the period 2003–2006 and find that short-term debt is positively associated with accruals-based earnings management (measured by discretionary accruals), consistent with the financial distress theory. We also find that this relation is significantly weaker for firms that are of higher creditworthiness (i.e. investment grade firms), consistent with monitoring benefits outweighing financial distress reasons for managing earnings.