We analyze the performance of Japanese open-type stock mutual funds for the 1981–1992 period. The results show that, regardless of the performance measures and benchmarks employed, most of the Japanese mutual funds underperform the benchmarks by between 3.6% and 10.8% per annum. These funds tend to invest more in large stocks with low book-to-market ratios. But this feature does not explain the underperformance. A potential explanation is the dilution effect caused by inflows of funds. In Japan, a new investor of an open-type fund only pays in the after-tax value of the net asset value. We conduct a bootstrap experiment to assess the magnitude of this dilution effect.

Von Neumann-Morgenstern preferences over terminal consumption can be inferred from wealth on a single sample path when markets are complete and returns follow a known law in a neoclassical investment problem in either a discrete-time i.i.d. binomial model or a continuous-time diffusion model with a Gaussian state variable. Numerical results suggest that useful information about preferences can be obtained from even a single noisy sample of monthly observations of a portfolio over 5 years.

Abstract This study investigates the separate and joint effects of prior knowledge and accountability on performance in the information search phase of a tax research task. An experiment is reported in which 63 tax professionals performed a computer-based tax research task. The results indicate that increases in effort duration, which are partly attributable to the accountability manipulation, improved search effectiveness regardless of the level of prior knowledge. In addition, after controlling for the effect of effort duration, accountability had an incremental positive effect on performance among the more knowledgeable professionals. These results suggest that effort can substitute for knowledge in performing information search tasks, but this substitution does not appear to be complete. The results also support the hypothesis that the effect of accountability on performance depends upon the level of knowledge, which suggests that certain aspects of effort and knowledge act as complements in improving performance.

[This study investigates the separate and joint effects of prior knowledge and accountability on performance in the information search phase of a tax research task. An experiment is reported in which 63 tax professionals performed a computer-based tax research task. The results indicate that increases in effort duration, which are partly attributable to the accountability manipulation, improved search effectiveness regardless of the level of prior knowledge. In addition, after controlling for the effect of effort duration, accountability had an incremental positive effect on performance among the more knowledgeable professionals. These results suggest that effort can substitute for knowledge in performing information search tasks, but this substitution does not appear to be complete. The results also support the hypothesis that the effect of accountability on performance depends upon the level of knowledge, which suggests that certain aspects of effort and knowledge act as complements in improving performance.]

[This paper examines the voluntary disclosure of nonproprietary information using the model of uncertain information endowment developed by Dye (1985) and Farrell (1986), and extended by Jung and Kwon (1988). The paper focuses on a broad family of functions relating the probability of information acquisition to ex post information quality. The paper shows that for each function there is some region that displays a negative relation between ex ante information quality and the frequency of disclosure. In addition, a sub-family of functions is identified for which ex ante information quality and the frequency of disclosure are negatively related everywhere. These results indicate that the economic intuition that higher informational asymmetry is accompanied by more voluntary disclosure is not generally true.]

Recent occurrences of financial distress to some insurers have raised questions about whether the current guaranty system is adequate to protect policyholders. Four new systems have been proposed. Using the state preference model, it was found the Stewart's national system faring the best, if it adopts uniform regulation. Based on agency theory, the pre-assessment approach and the policyholder surcharge (or premium increase) recoupment method were found to be better than the current post-assessment approach and premium tax offset method. Furthermore, uniform policy limits and regulations are recommended.