How is it that environmental groups can have a strong impact on environmental policy but without much lobbying? This paper develops a model of "direct" (lobbying the government) and "indirect" (persuading the public) competition for political influence and finds that they are complementary. However, an increase in the effectiveness of public persuasion, or a rise of public environmental awareness, induces substitution between the two. The findings establish that the empirical phenomenon of lack of political contribution from environmental groups may not be related to financial constraints, but to their greater effectiveness in public persuasion and growing public environmental awareness. Copyright 2005, Wiley-Blackwell.

We propose to impose a weighted l1 and squared l2 norm penalty on the portfolio weights to improve out-of-sample (OOS) performances of portfolio optimization when the number of assets becomes large. We show that under certain conditions, the realized risk of the optimal minimum variance portfolio (MVP) obtained from the strategy can asymptotically be lower than those of benchmark portfolios with a high probability. Our theoretical results imply that penalty parameters for the weighted-norm penalty can be specified as a simple function of the number of assets and sample size. With the theoretical results, we also develop an automatic calibration procedure for choosing the penalty parameters. We demonstrate superior OOS performances of the weighted-norm MVP with two real data sets. Finally, we propose several alternative norm penalties and show that their OOS performances are comparable to the weighted-norm strategy.

This paper examines how politically connected firms shape housing supply in U.S. cities. Using new data on campaign donations to U.S. mayors and a regression discontinuity design, I present three findings. First, developers connected to the mayor sell more new housing units. Second, more sales of new housing by connected developers coincide with higher local housing supply: cities where mayors received more developer donations issue nearly 70 percent more permits for new housing units. Third, differences in mayors’ pre-existing policy stances—rather than connections to developers—is a quantitatively larger determinant of local housing supply.

The primary purpose of incorporating a set of internal controls in the financial information system is to enhance the system's reliability-i.e., to maintain a high probability of preventing, detecting, and eliminating errors, irregularities, and fraud in the financial information system. The demonstrated reliability of the system provides evidence as to the quality of the output of the system. It is well accepted that the effectiveness of internal controls must be taken into account in determining the extent and nature of the audit procedures appropriate in a given examination.' The more reliable the system, the less extensive the tests the auditor need conduct. Recognizing this inverse relationship between effectiveness of internal control and audit scope, the American Institute of CPAs requires all auditors to initially evaluate the reliability of internal controls as a matter of audit standards.2 Recently, the Committee on Auditing Procedures of the AICPA released several statements on the subject of internal controls which re-emphasize the importance of the study of their reliability.3 But, despite this emphasis, the auditor currently does not possess a means to objectively evaluate the reliability of the internal control system. Conventionally, the auditor uses questionnaires, flow charts, and tests of transactions for evaluation pur-

[On August 12-13, 2005, the department of finance at the Kelley School of Business, Indiana University, collaborated with the "Review of Financial Studies" to host a conference titled "The Causes and Consequences of Recent Financial Market Bubbles." This article begins with our overview of the themes and findings of the conference, and it ends with the questions that the literature has yet to answer.]

Reviews the book "Information for Decision Making," edited by Alfred Rappaport.

Recently, professors Karl Kafer and V. K. Zimmerman presented an excellently documented paper on the evolution of the funds statement in the U.S. and in Europe. Following extensive exploration, they pointed out some significant deficiencies of the funds statement. The main purpose of this article, however, is to present a different format for the construction of this flow statement. It is hoped that a structural change in this flow statement will throw some additional light on the study of flows of economic resources at the business-enterprise level. In addition to recognizing the distinction between financial and nonfinancial flows of business operations, it is important to analyze their interplay. Productive activities may be financed internally, externally, or both. A detailed presentation of the financial activities of an enterprise will show not only how additional productive resources are acquired, but will also provide a basis, in part at least, for analyzing expansion and future income flow. The conventional balance sheet and income statement are deficient in depicting financial activities of a firm and in relating theft relationship to the firm's productive activities. It must be remembered that net income is "attributable to the whole process of business activity" and that the operations involves continuous movement of productive and financial resources. The resources-flow statement should not be treated as a supplementary device. It is a basic statement in its own right. With two basic types of flows, the need for at least two flow statements is quite dear. In addition, the resources-flow statement is much more than a statement of financial flows.