A probabilistic model for nonsymmetric correspondence analysis and prediction in contingency tables

Summary Nonsymmetric correspondence analysis is a model meant for the analysis of the dependence in a two-way continengy table, and is an alternative to correspondence analysis. Correspondence analysis is based on the decomposition of Pearson's Ф²-index Nonsymmetric correspondence analysis is based on the decomposition of Goodman-Kruskal's τ-index for predicatablity. In this paper, we approach nonsymmetric correspondence analysis as a statistical model based on a probability distribution. We provide algorithms for the maximum likelihood and the least-squares estimation with linear constraints upon model parameters. The nonsymmetric correspondence analysis model has many properties that can be useful for prediction analysis in contingency tables. Predictability measures are introduced to identify the categories of the response variable that can be best predicted, as well as the categories of the explanatory variable having the highest predictability power. We describe the interpretation of model parameters in two examples. In the end, we discuss the relations of nonsymmetric correspondence analysis with other reduced-rank models.     

Emerging from the cocoon of Romani pride: The first graduates of the Gandhi Secondary School in Hungary

Despite recent educational reforms in Hungary, only 33% of Roma who enter primary school subsequently enroll in secondary school, and a mere 0.2% progress to higher education. To address this situation, in 1994 the Gandhi Secondary School opened its doors as the first college preparatory school for Roma in Europe. In 2000, the school graduated 18 of its original 56 students. Based on interviews conducted in 2004 with 10 of these students, two of the school's founders and two teachers, this paper documents the graduates' reflections on their experiences during high school and beyond. Data revealed that students found a second family at the school—indeed a protective cocoon—but did not always feel equipped to handle the racism they encountered later in both the workplace and university.     

War and the contest over national identity

This paper looks at a recent historical moment in which the American national identity was defined and contested in the public arena. The Persian Gulf crisis of 1990‐91 presents a case in point in which official actors attempted to define the American character and in so doing prescribed particular actions necessary to fulfill what it means to be an American confidence. He described Americans as unique in esteemed values and America as the only country capable of leading the world. In so doing, he invited American participation in support for US military intervention. On the other side, the peace movement chose to emphasize American weaknesses, domestic problems, and the gullible nature of the American people. In so doing it attempted to shame Americans into supporting the anti‐war movement.     

Capabilities and Well-Being: Evidence Based on the Sen–Nussbaum Approach to Welfare

One of the most significant theoretical contributions to welfare analysis across a range of disciplines has been the development of the capabilities framework by Sen and others. Motivated by the claim that freedom should play a key role in social evaluation, the capabilities framework suggests that we consider what it is that people are free to do, as well as what they actually do. Using data from the British Household Panel Survey in conjunction with a list of substantial values posited by Martha Nussbaum, we contribute to the operationalisation and testing of this approach. Specifically, we suggest that commonly used secondary data sources do provide some information about the capabilities people have and that this can be incorporated into models of (subjective) well-being such as those used by a growing number of labour and health economists. We find evidence that a wide range of capabilities exhibit statistically significant relations to well-being that the relations are complex and slightly different for men and women, and conclude with suggestions for future developments.     

Legal standards for evaluation research: A reply to Smith

Smith (1981), asserting that not all evaluative studies require the same degree of evidence for decision-making, suggests a legal paradigm for determining how much certainty is necessary for informed decision-making. Specifically, he argues for the use of three levels of certainty, i.e., suggestive, preponderant, or conclusive evidence, modeled after the legal standards of proof. Unfortunately, such an approach is untenable for several reasons. Smith's suggestion that decision-makers adopt legal terminology, for example, is really a recommendation of form rather than substance and, furthermore, his analogy from the law to the evaluation context is based upon a misunderstanding of the trial process. These and other problems with Smith's suggestions are discussed.     

Comprehensive model for child services: Parent education follow through program

One program which provides comprehensive child and family services is the Parent Education Follow Through Program. Developed at the University of Florida in 1968 by Dr. Ira J. Gordon and moved to the University of North Carolina in 1977, this program is currently implemented in ten diverse communities across the nation, both rural and urban. Using a theoretical ecological framework, the program focuses on the relationship between the home and the school with attention also given to other systems present in the community as well as at the state and national levels. The major features of the program include the following: (1) comprehensive services (social, psychological, and medical); (2) weekly home visitations by paid paraprofessionals during which home learning activities stressing specific parental teaching behaviors are delivered; and (3) parental participation of various kinds including volunteer, employee and decision-maker. The data that have been collected to measure these program areas have shown that the model has had a positive impact upon children's achievement as well as upon their families, the school, and the community.