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61.
In the finance and accounting literature, the use of a common divisor in the dependent and independent variables of ordinary least‐squares regressions is commonplace. What goes less recognized, however, is that their use induces spurious correlation between the regression variables and invalidates standard testing procedures. This paper analyses the common divisor problem by outlining analytical results concerning the expected R2 and providing a simulation procedure that generates test statistics from which critical values can be drawn. To illustrate the procedure, we re‐investigate payout yield return predictability findings that have appeared in the literature and show that the results are spurious. 相似文献
62.
THE DETERMINANTS OF HAZARDOUS WASTE DISPOSAL CHOICE: AN EMPIRICAL ANALYSIS OF HALOGENATED SOLVENT WASTE SHIPMENTS 总被引:2,自引:0,他引:2
Disposal of hazardous waste is more complex than simply choosing the option with the lowest price: Legislation may hold a waste generator responsible for cleaning up a badly contaminated waste disposal site if the operator of that site goes bankrupt. This paper estimates conditional logit models of a generator's choice of waste management facility (TSDF) for shipments of halogenated solvent waste originating in California in 1995. The probability that a facility is selected as the destination of a shipment depends on the cost of shipping to and disposal at the facility, on existing contamination at the site, and on the track record of the facility, suggesting that generators do seem to balance current disposal costs with the likelihood of future liability. There is no evidence that generators prefer facilities owned by publicly traded firms, but when generators do choose TSDFs belonging to a publicly traded company, they prefer wealthier companies. (JEL Q21) 相似文献
63.
JOHN TROWELL 《Australian Accounting Review》2007,17(43):92-96
The distinction between offer date and acquisition date is important when determining the fair value of shares offered as consideration in an acquisition or takeover. Standards on business combinations have required this to be determined at acquisition date, certainly since 2001, even though earlier opinions such as APB Opinion 16 had allowed the use of offer date. Despite this, Lonergan (2004) continued to favour the use of offer date, using the Wesfarmers takeover of Howard Smith in 2001 as support, and claiming that acquisitions are essentially locked-in from the offer date. But this is generally not the case. This paper shows that acquisition date is correct when conditions change during a takeover. 相似文献
64.
JOHN FIROR 《Contemporary economic policy》1990,8(3):3-15
During the hot, dry summer of 1988, nearly every newspaper, magazine, and television and radio station in the United States discussed the hot weather and its possible connection with the "greenhouse effect." This public discussion was needed to alert many people to an important topic, but it also led to many misunderstandings about the physical and technical facts and studies involved in considering future climate heating. Some of these misunderstandings originate with the media, some result from the manner in which climate modelers make heating calculations, and a few result from words having meanings that are slightly different to scientists than they are to the general public. The most basic facts that one must understand are as follows, (i) Theory foreseeing a rapid climate heating during the coming decades is based on some of the best understood features of the atmosphere, (ii) The average surface temperature of the earth has increased during the past 120 years, but this increase has been far from uniform and does not prove or disprove that a climate heating is under way. (Hi) The technology is available to begin decreasing rapidly the emission of infrared-trapping gases. 相似文献
65.
JOHN AFFLECK-GRAVES LARRY R. DAVIS RICHARD R. MENDENHALL 《Contemporary Accounting Research》1990,6(2):501-517
Abstract. Previous research has shown that analysts' forecasts of quarterly earnings per share (EPS) are more accurate than those of accepted time-series models. In addition, some previous research suggests that, on average, analysts' forecasts tend to be optimistic (i.e., biased). Two explanations for analysts' superiority have been proposed: (1) analysts use more recent information than can time-series models and (2) analysts use forecast-relevant information not included in the time-series of past earnings. This paper provides evidence on a third potential source of analyst superiority: the possibility that humans can use past earnings data to predict future earnings more accurately than can mechanical time-series models. We find that human judges do no worse than accepted time-series models when both use the same information set: namely, the series of past EPS figures. To date, little or no research has attempted to determine why analyst bias might exist. Still, some possible reasons have been forwarded. First, pessimistic forecasts or reports may hinder future efforts of the analyst or the analyst's employer to obtain information from the company being analyzed. Second, forecast data bases may suffer a selection bias if analysts tend to stop following those firms that they perceive as performing poorly. This study proposes, and provides evidence regarding, a third possible explanation for analyst bias: the use of judgmental heuristics by analysts. Many studies have shown that human predictions are often biased because of the use of such heuristics. We present evidence that suggests this may be the case for analysts' forecasts of earnings per share. Résumé. De précédents travaux de recherche ont démontré que les prévisions des analystes relatives au bénéfice par action (BPA) trimestriel sont plus exactes que celles que permettent d'obtenir les modèles reconnus basés sur les séries chronologiques. De plus, les résultats de certains travaux de recherche laissent croire qu'en moyenne, les prévisions des analystes tendent à être optimistes (c'est-à-dire biaisées). Deux explications à cette supériorité ont été proposées: 1) l'information que les analystes utilisent est plus récente que celles utilisées dans les modèles fondés sur les séries chronologiques et 2) les analystes utilisent de l'information pertinente aux prévisions qui ne figure pas dans les séries chronologiques relatives aux bénéfices passes. Les auteurs attribuent à un troisième facteur potentiel cette supériorité: la possibilité pour les humains d'utiliser les données relatives aux bénéfices passés pour prédire les bénéfices futurs de façon plus précise que ne le peuvent les modèles fondés sur les séries chronologiques. Ils en viennent à la conclusion que les humains obtiennent des résultats tout aussi efficaces que les modèles chronologiques reconnus lorsqu'ils utilisent un jeu de renseignements identique, soit les données historiques relatives au BPA. Jusqu'à maintenant, peu de chercheurs, sinon aucun, ont tenté de déterminer à quoi tiendrait l'existence d'un biais chez l'analyste. Malgré tout, certaines explications possibles ont été proposées. Premièrement, les prévisions ou les rapports pessimistes peuvent faire obstacle aux efforts futurs de l'analyste ou de son employeur pour obtenir de l'information de la société faisant l'objet de l'analyse. Deuxièmement, les bases de données servant à la prévision peuvent être entachées d'un biais de sélection si les analystes ont tendance à cesser de suivre les entreprises qui leur semblent afficher une piètre performance. Les auteurs proposent et attestent une troisième explication possible du biais de l'analyste: l'utilisation de méthodes heuristiques fondées sur le jugement. De nombreuses études ont démontré que les prédictions humaines sont souvent biaisées par suite de l'utilisation de ces méthodes heuristiques. Les auteurs apportent des arguments qui permettent de croire que ce pourrait être le cas des prévisions des analystes du bénéfice par action. 相似文献
66.
67.
68.
Abstract. In this paper we examine the productivity of Canadian academic accountants through analyses of articles published in 10 refereed journals between 1976 and 1989, inclusive. We report the numbers of articles by Canadian institutional affiliation cross-tabulated by subject area, whether theoretical or empirical, and by the journal in which articles appeared. Summary statistics are computed to identify the gross and per capita productivity of the institutions represented and to identify the 10 most productive researchers in this period as well as in the subperiods 1976–82 and 1983–89. 相似文献
69.
The robustness of the multivariate test of Gibbons, Ross, and Shanken (1986) to nonnormalities in the residual covariance matrix is examined. After considering the relative performance of various tests of normality, simulation techniques are used to determine the effects of nonnormalities on the multivariate test. It is found that, where the sample nonnormalities are severe, the size and/or power of the test can be seriously misstated. However, it is also shown that these extreme sample values may overestimate the population parameters. Hence, we conclude that the multivariate test is reasonably robust with respect to typical levels of nonnormality. 相似文献
70.