Do missing values exist? Incomplete data handling in cross-national longitudinal studies by means of continuous time modeling

In cross-national longitudinal studies it is often impossible to administer the same measurement instruments at the same occasions to all sample units in all participating countries. This quickly results in large quantities of missing data, due to (a) missing measurement instruments in some countries, (b) missing assessment waves within or across countries, (c) missing data for individual sample units. As compared to cross-sectional studies, the problem of missing values is further aggravated by the fact that missing values are always associated with different time intervals between repeated observations. In the past, this has often been dealt with by the use of phantom-variables, but this approach is limited to simple designs with few missing value patters. In the present paper we propose a new way to think of, and deal with, missing values in longitudinal studies. Instead of conceiving of a longitudinal study as a study with \(T\) discrete time points of which some are missing, we propose to conceive of a longitudinal study as a way to measure an underlying process that develops continuously over time, but is only observed at some selected discrete time points. This transforms the problem of missing values into a problem of unequal time intervals. After a quick introduction to the basic idea of continuous time modeling, we demonstrate how this approach provides a straightforward solution to missing measurement instruments in some countries, missing assessment waves within or across countries, and missing data for individual sample units.     

Market structure and corporate charitable donations: some Canadian evidence for 1976 and 1981

The business of business, not charity.

Say eleemosynary its more confusing.

Whatever, as long as we don't given 'em any cash.

Harv Antione, ‘The Buzz Words of Entrepreneurship’

in Apocryphal Northern Tales

This paper investigates the general determinants of corporate charitable donations in Canada and, in particular, the impact of imperfectly-competitive market structure. We utilize a profit-maximizing model and assume that charitable donations occur only if, by performing an advertising/public relations function, they increase revenue; or if, by acting as a fringe benefit, they result in a reduction in wage costs. In this context, because only firms in imperfect markets generate the rents from which donations can be made, we anticipate a positive relationship between donations and a measure of imperfect competition (concentration). The data is a cross-section sample of 38, 3- and 4-digit SIC manufacturing industries pooled for 1976 and 1981. The major findings are that: the results are generally compatible with the predictions of the model; concentration is a significant determinant of donations although non-linear; the cost of giving (the tax rate) is appropriately positive; and there are significant negative relationships for measures of foreign ownership and wage rates.     

Do Traditional Chinese Cultural Values Nourish a Market for Pirated CDs?

On one hand, Chinese consumers are well known for conspicuous consumption and the adoption of luxury products and named brands. On the other hand, they also have a bad reputation for buying counterfeit products. Their simultaneous preferences for two contrasting types of product present a paradox that has not been addressed in the literature. This study attempts to present an explanation of this paradox by examining the effects of traditional Chinese cultural values and consumer values on consumers’ deontological judgment of pirated CDs and the amount of social benefits they perceive they gain from them. We interviewed 300 Hong Kong Chinese consumers, and found that face consciousness increased materialism and risk aversion, thereby producing a favorable deontological judgment of pirated CDs. Face consciousness also has a direct effect on the amount of social benefits perceived in pirated CDs. Both favorable deontological judgment and perceived social benefits contributed to a strong intention to buy pirated CDs. The results are discussed in a cultural perspective.     

De concurrentiepositie van Nederlandse uitvoerprodukten op de E.E.G.-markt

Brussel, augustus 1959.     

THE LEGALITY OF THE SHAREHOLDER RIGHTS BY-LAW IN DELAWARE: PRESERVING THE MARKET FOR CORPORATE CONTROL

Just as some lawyers almost killed the takeover market with the invention of the poison pill in the 1980s, others are now about to reinvigorate it with another legal invention. The “shareholder rights bylaw,” which promises to be the next major legal battleground in the market for corporate control, aims to eliminate the current ability of target company boards of directors to block changes of control by keeping their poison pill defenses in place. The new bylaws require the poison pill (and other defensive measures) to expire automatically whenever the firm receives an allcash offer for 100% of the firm's stock at a price at least 25% above the prebid market price. The firm can keep its poison pill, but only if shareholders vote to keep it after receiving the offer. Although the legality of the share-holder rights bylaw has been challenged as an undue infringement on boards of directors' power to run companies, this article argues that their legality will be upheld for three reasons:

• ? First, shareholder rights bylaws merely reinforce the corporate manager's responsibility to manage the firm to maximize shareholder value.
• ? Second, Delaware and most other jurisdictions give shareholders the specific right to amend the bylaws of a corporation; and the shareholder rights by-law is a straightforward exercise of this explicit right granted to shareholders.
• ? Third, the adoption of shareholders rights by-law does not prevent the board of directors from advising share-holders to vote to reject a takeover bid, nor does it prevent shareholders from giving management the authority to use defensive mechanisms such as the poison pill.

As the article concludes, upholding this right of shareholders to choose whether a poison pill is used to block a takeover is critical to the vitality of the takeover market and, hence, to the preservation of the agency relationship between directors and shareholders. Upholding this right may also prove critical to Delaware's ability to maintain its predominance in the market for corporate chartering.