Presenting hypothesis testing by analogy

Auditing students often have difficulty with hypothesis testing. In this article, a concise approach for presenting hypothesis testing is discussed. Specifically, the author shows that the construction of an hypothesis test for the mean per-unit estimator is analogous to the formulation of such a test for auxiliary estimators. Because these tests are comparable, the approach encompasses a logical progression from the mean per-unit estimator to the auxiliary estimators. This approach enables students to perceive the similarities among these estimators and to better understand and assimilate the subject matter.     

RELATIVE EFFICIENCIES OF NON-LIFE REINSURANCE MARKETING METHODS

Abstract: This paper extends the study of the relative cost efficiency of insurance delivery systems from the primary market to the market for non-life reinsurance services. As in the primary market for insurance services there are two predominant methods of marketing reinsurance services: reinsurers who rely on employees, termed direct writers, and those who rely on brokers.
An extensive literature relating to the primary market for non-life insurance consistently indicates that independent agency insurers have a cost disadvantage relative to exclusive agency insurers. This literature also suggests that independent agency insurers may supply superior service but a continuing erosion of the market share of independent agency insurers suggests that the perceived service differential is not valued sufficiently to offset the perceived cost differential.
The authors find evidence that, cet. par., broker supplied reinsurers operate with lower costs than direct reinsurers but we find less convincing evidence of a service differential favoring direct reinsurers. More significantly, we observe that the largest component of the traditional measure of the reinsurer's cost is the commission paid back to the primary insurer: the seemingly lower cost brokers provide a higher net cost product. Yet brokers thrive in the marketplace suggesting the existence of a product differentiated by service or quality. With the important caveat that measures of service are imperfect and data is limited, we find no evidence of a service differential.     

Does Corporate Diversification Destroy Value?

We analyze several hundred firms that expand via acquisition and/or increase their number of business segments. The combined market reaction to acquisition announcements is positive but acquiring firm excess values decline after the diversifying event. Much of the excess value reduction occurs because our sample firms acquire already discounted business units, and not because diversifying destroys value. This implies that the standard assumption that conglomerate divisions can be benchmarked to typical stand-alone firms should be carefully reconsidered. We also show that excess value does not decline when firms increase their number of business segments because of pure reporting changes.     

Research Applications of the Multifamily Housing Institute's Apartment Database

Data on the financial performance of multifamily rental housing has not been available nearly as long as such information for single-family housing. It is believed that this lack of information has increased the cost of debt and equity capital to apartment housing and thus has increased the rents paid by apartment residents. Data on apartments, which is now becoming available through an industry-sponsored initiative, has the potential of narrowing this information gap. This article has several objectives: to describe this new database, AptData^TM, to housing researchers to assess the strengths and weaknesses of AptData^TM for housing market and policy research, to compare estimates from AptData^TM with those from other sources, and to offer several potential research applications of this new data resource.     

Beneficial changes in random variables under multiple sources of risk and their comparative statics

The consequences of a change in a random parameter are determined for a decision model with more than one source of randomness. The two cases of independent and stochastically dependent sources of risk are discussed. Four comparative static theorems are given. These state the effect of first degree stochastically dominant shifts or risk decreases for one random variable while the other random variable is held fixed. Deterministic transformations are used to represent random parameter changes. The results are presented in the context of the coinsurance demand model with a risky insurable asset and background risk.     

INVESTMENT PERFORMANCE OF COMMON STOCKS IN RELATION TO INSIDER OWNERSHIP

In this paper, the authors empirically examine whether corporations with high degrees of insider ownership enjoy superior returns compared with firms with more diffuse ownership. In addition, the authors evaluate the effects of insider ownership on security returns in relations to the well-known effects of size and earnings yield (or price-earnings) ratios. Results indicate that, in addition to Basu's price-earnings effect, insider ownership is a new statistically significant variable that is associated with abnormal returns. This return anomaly might occur because the market pays an inadequate price for top managements' equity ownership, a firm-specific fundamental variable that has a theoretical foundation in agency theory.     

Investor Response to Mutual Fund Policy Variables

The effects of investment performance and macro-economic influences on money flow to individual mutual funds previously have been investigated and found to provide little explanatory power. In this article we investigate an additional category of factors that may logically be thought to affect the flow of money to funds, namely, the fund policy factors over which managers have some degree of control. These are: load/no-load status, sales commission structures, minimum dollar investment levels, and expenses. We establish associations between these factors and new money flows. Several significant relationships are found. Overall, however, the policy variables we investigated explain little of the variability in new money flows. A competitive equilibrium appears to exist such that no single fund attracts new money at disproportionately high rates through its policies. Our results, like those obtained for performance and macro-economic variables, highlight the inability of mutual fund research to date to explain adequately the flow of new money to individual funds.     

Temporary Buydowns and Affordability

This paper is directed to a neglected aspect of the problem of home ownership affordability: the impact on affordability of temporary buy downs. A temporary buydown is an option offered to home buyers to reduce the mortgage payment in the early years of the loan. The borrower allocates cash up front to an escrow account from which funds are withdrawn monthly to supplement the borrower's mortgage payment.
Temporary buydowns are underused partly because of the difficulty of determining whether, in any particular case, they will increase affordability. This paper develops a new instrument called the maximum affordable mortgage (MAX) which automatically allocates the buyer's available cash between buydown, down payment and other uses in a manner which maximizes affordability for the buyer, subject to whatever underwriting constraints the investor wishes to impose on payment graduation and/or the total size of the buydown.
The lender originating the MAX must be able to solve a complex algorithm at the point of sale, but the complexity is all behind the scenes. Using a computer, a loan officer can quickly find the cash allocation that maximizes affordability. The power of the MAX in increasing affordability may be enhanced if it is combined with a buyup wherein the lender trades off lower points against a higher rate.     

Henry George and George Bernard Shaw: Comparison and Contrast

A bstract . Henry George , the American economist and social philosopher , and George Bernard Shaw , the British playwright and social reformer , were two famous personalities of the last quarter of the 19th century, each a prophet in his own way. The two men probably never met, though Shaw credited George's oratory as well as his classic. Progress and Poverty , with awakening his interest in economic issues, and to his last days acknowledged his debt to George. Both were deeply committed to ending poverty. But there the similarity ended—George was devoted to ethical democracy, Shaw to socialist dictatorship. George saw cooperative individualism as the goal of social reconstruction; Shaw dreamed of a Superman, and fancied himself a supporter of the Soviet dictator, Joseph Stalin, and of Soviet Russian'communism.'Shaw saw the purpose of life as "being used for a (mighty) purpose;" George saw it as blazing a trail for'progressive humanity,'cooperating with the Creator in creating a moral world.