Longitudinal rank tests for detecting location shift in the distribution of abnormal returns: An extension*

Abstract. We extend Chandra and Rohrbach (1990) to explain how to develop a longitudinal rank test (r-test) analogous to any t-test used in the event study literature. We compare all analogous pairs using market model residuals. The r-test is more powerful than the t-test in each pair. This suggests that if the researcher intends to use any t-test then, for more power, the comparable test should be preferred. These results should be useful to the researcher in selecting an r-test for event study because now the same flexibility of choosing an r-test as a t-test is available. Résumé. Les auteurs poussent plus loin les travaux de Chandra et Rohrbach (1990) pour expliquer comment mettre au point un test de rangs logitudinaux (test r) analogue aux différents tests t utilisés dans les ouvrages portant sur l'étude d'événements. Ils comparent toutes les paires analogues en utilisant les résiduels des modèles de marché. Le test r est plus puissant que le test t dans chacune des paires, de sorte qu'on peut penser que si le chercheur prévoit utiliser un test t pour sa puissance, il aurait avantage à recourir au test r comparable. Ces résultats devraient être utiles aux chercheurs dans la sélection d'un test r pour l'étude d'événements puisque, dorénavant, le choix d'un test r peut offrir la même souplesse que celui d'un test t     

It's SHO Time! Short-Sale Price Tests and Market Quality

We examine the effects of the Securities and Exchange Commission (SEC)-mandated temporary suspension of short-sale price tests for a set of Pilot securities. While short-selling activity increases both for NYSE- and Nasdaq-listed Pilot stocks, returns and volatility at the daily level are unaffected. NYSE-listed Pilot stocks experience more symmetric trading patterns and a slight increase in spreads and intraday volatility after the suspension while there is a smaller effect on market quality for Nasdaq-listed Pilot stocks. The results suggest that the effect of the price tests on market quality can largely be attributed to distortions in order flow created by the price tests themselves.     

CHILDCARE USE AND PARENTS’ LABOUR SUPPLY IN AUSTRALIA*

Based on data which are representative of the Australian population in 2002, this paper first analyses the demand for and cost of formal and informal childcare for couple and sole‐parent families, shedding light on factors which affect the demand for childcare. The predicted demand of formal childcare and the predicted costs of informal childcare arising from these models are then used to impute total childcare costs at different levels of labour supply. Finally, the predicted total costs are incorporated in the estimation procedure of structural labour supply models for couple and sole parent families. By making several extensions to the methodology adopted in Doiron and Kalb (2005a ), who estimated similar models based on 1996 Australian data and which this paper largely replicates in terms of methodology, it is found that the average elasticities of labour supply with regard to the cost of childcare are quite similar to the earlier estimates. The elasticities remain at the lower end of the range found in the international literature with the exception of the elasticities for sole parents with preschool children and/or on relatively low wages.     

EFFECTS OF HEALTH RISK INFORMATION ON ADDICTIVE GOODS CONSUMPTION: A CASE OF TOBACCO,ALCOHOL, AND BETEL NUTS IN TAIWAN

This paper empirically investigates the relationship between the dissemination of information about the health risks of tobacco, alcohol, and betel nuts and their consumption in Taiwan. To estimate cross‐elasticities, the paper uses the Central Bureau of Statistics demand system model. Empirical results indicate that an increase in the dissemination of information on the health risks of tobacco, alcohol, and betel nuts substantially reduces real consumption. Empirical evidence from the cross‐elasticity of price also confirms that a complementary relationship exists in Taiwan among these three addictive products. (JEL D12, Q11, H26)     

WELFARE-IMPROVING PRIVATIZATION POLICY IN THE TELECOMMUNICATIONS INDUSTRY

This article considers the vertical structure of the telecommunications industry and examines the welfare effects of privatization on the public enterprise, where the public enterprise supplies the essential network service of the upstream market and competes against private, independent firms in a mixed downstream market. It is shown that the cost advantage of the independent rivals improves welfare postprivatization. Several relevant and current policy issues on the process of privatization in the telecommunications industry are also discussed. (JEL L50, D42)     

SEPARATE AND UNEQUAL: THE EFFECT OF UNEQUAL ACCESS TO EMPLOYMENT-BASED HEALTH INSURANCE ON SAME-SEX AND UNMARRIED DIFFERENT-SEX COUPLES

Employers' health insurance coverage for legal spouses places unmarried couples at a disadvantage for obtaining coverage. Data from the Current Population Survey confirm that people with same-sex or different-sex unmarried partners are two to three times more likely to be uninsured than married people, even after controlling for factors influencing coverage. Universal partner coverage would cut that uninsured rate by as much as 50%. Employers offering domestic partner benefits would see a small enrollment increase: 0.1%–0.3% for gay and lesbian partners and 1.3%–1.8% for heterosexual partners. We find no evidence of adverse selection. (JEL J32 , J38 , J71 )     

INCREASED INDUSTRIAL USES OF AGRICULTURAL COMMODITIES POLICY, TRADE AND ETHANOL

Using agricultural feedstocks for industrial products affects domestic and international agricultural markets, all of which are encumbered with complex policies. This article examines the interaction of three seemingly unrelated policies: the Clean Air Act, the U.S. corn program, and European Union agricultural subsidies. More ethanol production, resulting from new regulations associated with the Clean Air Act, increases the use of U.S. corn and increases the supply of corn gluten feed, an ethanol co-product. Corn gluten feed is primarily exported to Europe under a loophole in European Union trade barriers. But recent reform of European Union farm policy will lower the price of the European grain for which corn gluten feed is a substitute. This development lowers prices for a major ethanol co-product and thus makes ethanol itself less profitable just as the demand for the fuel is expanding. NAFTA, GATT, and new technologies also play cameo roles in the story .     

来自韩国媒体空间的风景——国际实验媒体论坛:韩国报告

我首先要说的是植入(embeddedness)的概念,它最初是经济历史学家卡尔·波兰尼(KarlPolanyi)在其著作《大转型》(The Great Transformation)     

The 1985 Ohio Thrift Crisis,the FSLIC's Solvency,and Rate Contagion for Retail CDs

This paper uses both an ARIMA transfer-function intervention model and a panel data analysis to examine the effect of the Ohio deposit insurance crisis in 1985 on the pricing of six-month retail certificates of deposit (CDs) for federally-insured Ohio banks and savings and loans. Adjusting for pricing reactions due to changes in market rates, we find a significant, unanticipated rise in CD-rate premiums on the initial event week of the crisis that continued for approximately seven weeks. Consistent with a contingent insurance guarantee hypothesis, rate premiums are found to be risk based.