Dynamic Stock Markets with Multiple Assets: An Experimental Analysis

We study the performance of the rational expectations hypothesis in multiperiod experimental markets with multiple assets. We find that the markets are generally inefficient from the point of view of full information aggregation. However, arbitrage relationships hold, and it is not possible to detect the informational inefficiency by using some standard tests of market efficiency. These findings suggest that the lack of arbitrage opportunities and the failure of common tests to reject inefficiency are not sufficient to conclude that a market is informationally efficient.     

The Impact of Union Political Activities on Public-Sector Pay, Employment, and Budgets

Anecdotal evidence suggests that the political power of public employee unions has been a major cause of excessive growth in municipal expenditures. Previous studies, however, have not directly measured union political activities but instead have used some type of unionization or collective bargaining proxy. This paper uses unpublished data from the International City Management Association (ICMA) to develop a more direct measure of police and fire union political activity. It is found that increased union political activity leads to greater department expenditures but not necessarily to greater municipal expenditures or revenues. The results also suggest that unions increase department spending through political activity and not through the collective bargaining process itself. Further, it appears that political activity increases department spending through higher employment and not through higher compensation.     

Factors affecting low fruit and vegetable consumption in Scotland: a review of factors affecting fruit and vegetable consumption

The recently published ‘Scottish Diet’¹ emphasizes the importance of diet in Scotland's poor health record, and sets dietary targets for the year 2000. Fruit and vegetable intake is considerably lower in Scotland than in the rest of the U.K. This paper gives details of the low levels of fruit and vegetable consumption in Scotland in relation to the rest of the U.K., and then goes on to review the factors affecting consumption of these foods, and in particular to discuss them in terms of the Scottish situation. Finally, an agenda for research in this area is outlined, emphasizing the need for further information on the interrelationships between the different factors affecting fruit and vegetable consumption, in order to inform future strategies for increasing fruit and vegetable consumption in Scotland.     

Testing Rationality in the Point Spread Betting Market

This paper presents empirical tests of market rationality using data from the point spread betting market on National Football League games. Data from this market avoid many common pitfalls of tests of rationality in conventional financial markets. The authors test for rationality with two types of tests, statistical and economic. Results of the tests reveal that the statistical tests cannot reject market rationality while the economic tests do reject market rationality.