On a nonparametric test for the mixed-model

Nonparametric tests for the null hypothesis of no treatment effect in the mixed-model experiment which involves n randomly chosen subjects who respond once to each of ρ distinct treatments have been developed by Koch and Sen (1968), These tests were based on the assumption of compound symmetry of the error vectors and on the weaker assumption of diagonal symmetry of the error vectors. This paper considers an alternative (permutationally) distribution-free test under this latter assumption. The new test follows the same type of distribution theory as those in Koch and Sen, but utilizes the inherent invariance structure in a more visable and direct way.     

The National Health Service — Can it Survive?

The National Health Service is valuable. It is also expensive. Its promise of universal health care, free to all at the point of delivery, is a source of pride and some comfort, and is also perhaps the greatest achievement of the welfare state. But with demands on it rising, and a population that lives longer into expensive old age, can it possibly be sustained? Should there be rationing? Must the funding be changed? Nigel Edwards examines the dilemmas.     

AN ETHNOGRAPHY OF COUPLE AND THERAPIST EXPERIENCES IN REFLECTING TEAM PRACTICE

Couple and therapist perspectives about the use and process of reflecting team practice were analyzed using ethnographic research. A domain analysis was performed on postession interviews from both couples and therapists, and on field notes from each therapist. Seven couples and five therapists were interviewed at least twice over a 4-month period concerning their reactions to and perceptions of reflecting team practice. Six domains concerning reflecting team practice emerged from the analysis: (a)benefits of its use, (b) effects of gender, (c)recommended use, (d) contraindicated use, (e) the importance of creating spatial separateness between couple and team members, and (f) sequences of communication between the couple and team members that elicit change. The latter two domains described the process of reflecting team practice (i.e., steps in how it is used and how it is implemented). The role of ethnog rahy in reflecting team practice and in family therapy research is discussed.     

Deforestation and the Environmental Kuznets Curve: A Cross-National Investigation of Intervening Mechanisms

Objective . We draw on ecological modernization theory and international political economy arguments to examine the sources of an environmental Kuznets curve (or EKC) that produces an inverted U-shaped rate of deforestation relative to economic development. Method . We use ordinary least squares regression with White's (1978) correction for possible heteroskedasticity to examine the rate of deforestation (1980–1995) in less developed countries. Results . Net of controls for initial forest stock and the quality of deforestation estimates, we find strong evidence for an EKC driven by (1) agglomeration effects linked to the level of urbanization, (2) rural-to-urban migration that partially offsets rural population pressure, (3) the growth of services-dominated urban economies, and (4) strong democratic states. We find little evidence that foreign debt or export dependence influence the deforestation rate. Conclusions . Although deforestation continues to pose pressing and potentially irreversible environmental risks, there is evidence of self-corrective ecological and modernization processes inherent in development that act to mitigate these risks.     

Toward a scheduling congruity theory of family resource management

This article presents the elements of a theory to explain the dynamic construction and execution of production processes. The theory takes into account both the cognitive underpinnings and observable streams of purposive action necessary for managerial behavior. It attempts to explain both the consciously planned and executed action of individuals and the more routine, repetitive activities which dominate most resource allocation behavior. Further, it provides a framework within which goal directed actions of individuals may be translated into goal directed actions of groups of individuals.The authors wish to thank two anonymous reviewers for their helpful comments on an earlier draft of this article.Rosemary J. Avery is an Assistant Professor in the Department of Consumer Economics and Housing at Cornell University, 103 Martha Van Rensselaer Hall, Ithaca, NY 14853. She received her Ph.D. from The Ohio State University in 1988. Her research areas include family management and time use, family decision making, and family formation via adoption.Kathryn Stafford is an Associate Professor in the Department of Family Resource Management at The Ohio State University, Campbell Hall, Neil Avenue, Columbus, OH 43210. Her research focuses upon management by families who generate income at home, and she has also done work in the areas of family time use and household production. She received her Ph.D. from Cornell University in 1978.     

Managing human resource shortages in a unionized setting: Best practices in air traffic control

Human resource shortages require effective human resource management (HRM). Findings from research about ongoing labor shortages in air traffic control (ATC) are used to build a preliminary theory of appropriate HRM responses. Our international sample of major ATC agencies generally developed a set of best HRM practices to attract, motivate, and retain human assets. Key factors included (1) cultural and institutional norms, (2) technological change, (3) union responses, and (4) organizational form and structure (e.g., civil service versus commercial firms). While ATC’s rare human aptitudes, lengthy training to develop firm-specific human capital, and lifelong employment may limit the preliminary theory’s general applicability, crucial lessons emerge about human resource planning. This research was conducted with the support of the Social Sciences and Humanities Research Council, the Rice Fellowship, the Ziegler Fellowship, and the Center for International Business Studies at the University of Alberta. We are indebted to the individuals interviewed.     

Labor market flexibility: An index approach to cross-country comparisons

Recently, researchers have used measures of economic freedom (Gwartney and Lawson, 2002) to quantify the relationship between various institutional factors and measures of economic performance. Using a subset of these data, we develop a labor market flexibility index. This measure should be useful to researchers who study labor market performance among countries.     

The preservation of multivariate comparative statics in nonexpected utility theory

This article investigates the preservation of multivariate expected utility comparative statics for “smooth” nonexpected utility representations. Specifically, we answer the following question: if an expected utility comparative statics property depends only on preferences over sure prospects, then when will a nonexpected utility maximizer with identical sure preferences also satisfy that property? We demonstrate that the effects of increased risk aversion are preserved under the “Almost Degenerate Independence” axiom, but that those of distribution changes of exogenous risks are not preserved under stringent assumptions. Hence, nonexpected utility comparative statics may diverge from expected utility, even for “first-order” properties—those whose effect is determinable from restrictions on “local” utility functions.     

Career Maturity in College Students With Learning Disabilities

This study compared levels of career maturity between college students with and without learning disabilities and investigated factors associated with career maturity. Few differences in career maturity were found. However, different predictors of career maturity for the two groups emerged. For students with learning disabilities, number of accommodations and quantity of work experience accounted for 22% of the variance in career maturity. For students without disabilities, academic achievement and type of work experience accounted for 21% of the variance in career maturity. Students with learning disabilities who received more instructional accommodations had lower levels of career maturity.     

Venturing Jointly: Vienna's Innovation Economy

Vienna's role as Austria's largest innovative city-region depends upon many factors, of which a vibrant regional innovation system driven by joint research ventures is a key component. Between 1994 and 2002, various research groups located in the Vienna region participated in 7,334 research projects funded by the EU during the 4th and 5th Framework Programs. Organizations from this region were more likely than elsewhere in Austria to assume scientific leadership positions as project coordinators. The region specialized heavily in research concerning environment, information and communication technology, bio-technology, traffic, and general research topics. The region's most active organizations were concentrated in the city itself: universities, research organizations, small firms, and large firms were represented in a ratio of approximately 4:2:1:1. Among firms that participated, the largest ones dominated during the course of this period, although research participation by firms continually shifted more to small- and medium-sized enterprises. In terms of Austria, most research is concentrated in the about 30 most active postal-code zones, which in turn are dominated by the Vienna region. Over the full period, there is no evidence that Austrian research projects concentrated further and some types of research decentralized slightly. At the same time, the research participation of small- and medium-sized enterprises became more centralized within the Vienna region. The singular importance of stimulating further and more effective research in the Vienna region and its innovation system is obvious and these findings may be helpful in establishing policies that support key organizations, improve research infrastructure, and further stimulate the city's knowledge-generating system to ensure long-term innovation possibilities.