Security level,potential level,expected utility: A three-criteria decision model under risk

Among the violations of expected utility (E.U.) theory which have been observed by experimenters, the violations of its independence axiom is, by far, the most common. It seems that, in many cases, these inconsistencies can be ascribed to the desire for security - called the security factor by L. Lopes (1986) - which makes people attach special importance to the worst outcomes of risky decisions as well as to the sole outcomes of riskless decisions (certainty effect). J.-Y. Jaffray (1988) has proposed a model which generalizes E.U. theory by taking into account this factor and is then able to account for certain violations. However, especially in experiments on choice involving prospective losses, violations of the von Neumann-Morgenstern independence axiom cannot be explained by the security factor alone and have to be partially ascribed to the potential factor (L. Lopes, 1986) which reflects heightened attention to the best outcomes of decisions, especially when the best outcome is the status quo. In this paper, we construct an axiomatic model for subjects taking into account simultaneously or alternatively the security factor and the potential factor. For this, as in Jaffray's model, it has been necessary to weaken not only the standard independence axiom but also the continuity axiom and, in the same time, to reinforce the dominance axiom. In the resulting model, choices are partially determined by the mere comparison of the (security level, potential level) (i.e. the (worst outcome, best outcome)) pairs offered, and completed by the maximization of an affine function of the expected utility, the coefficients of which depend on both the security level and potential level.In this model, a decision maker who (i) has constant marginal utility for money, (ii) is sensitive to the security factor alone in the domain of gains, (iii) is sensitive to the potential factor alone in the domain of losses, behaves as a risk averter for gains and a risk seeker for losses.     

Computation of determinantal subset influence in regression

One of the important goals of regression diagnostics is the detection of cases or groups of cases which have an inordinate impact on the regression results. Such observations are generally described as influential. A number of influence measures have been proposed, each focusing on a different aspect of the regression. For single cases, these measures are relatively simple and inexpensive to calculate. However, the detection of multiple-case or joint influence is more difficult on two counts. First, calculation of influence for a single subset is more involved than for an individual case, and second, the sheer number of subsets of cases makes the computation overwhelming for all but the smallest data sets.Barrett and Gray (1992) described methods for efficiently examining subset influence for those measures that can be expressed as the trace of a product of positive semidefinite (psd) matrices. There are, however, other popular measures that do not take this form, but rather are expressible as the ratio of determinants of psd matrices. This article focuses on reducing the computation for the determinantal ratio measures by making use of upper and lower bounds on the influence to limit the number of subsets for which the actual influence must be explicitly determined.     

The Cognitive Domain of the Quality of Life of University Students: A Re-Analyses of an Instrument

This paper presents the re-analysis of a previouslypublished instrument, based on Bloom's taxonomy,developed to measure the cognitive domain of thequality of life of university students. The items inthis instrument were assessed using Guttman's SmallestSpace Analysis. The findings generally supportBloom's conceptualization, identifying 5 of 6dimensions in the taxonomy: Knowledge, Comprehension,Application, Analysis, and Evaluation. The findingsprovide support for the enduring utility of Bloom'staxonomy, and reinforce the ongoing need to testtheoretically informed instruments using sophisticatedstatistical techniques.     

The concept of sublimation

Women's Ways of Knowing: The Development of Self, Voice and Mind. M. F. Belenky, B. M. Clinchy, N. R. Goldberger and J. M. Tarule. (New York: Basic Books, 1986.)

The Therapist's Own Family: Toward the Differentiation of Self. Peter Titelman (Ed.). (Northvale, NJ: Jason Aronson, Inc., 1987.)

Clinical Work With Adolescents. Judith Marks Mishne. (New York: The Free Press, 1986.)     

Multiple decision rules for comparing several populations with a fixed known standard

Independent observations are available from k univariate distributions indexed by a real parameter θ. It is desired to select that distribution with the largest parameter value unless this value is smaller than some fixed standard θ₀ in which case no distribution is to be selected. Various single-stage procedures for this (k+l)-decision problem are discussed, using indifference zone, decision theoretic, Bayesian, and subset selection approaches.     

Should Dsm Be the Basis for Teaching Social Work Practice in Mental Health? Yes!

Abstract

Point/Counterpoint is a regular feature of the Journal of Social Work Education. Its purpose is to provide a vehicle for the expression of contrasting views on controversial topics in social work education. Our goal is to illuminate important debates and explore the diverse perspectives that are shaping social work education.

In each issue of the Journal several social work educators are invited to comment on a topic about which they have differing viewpoints. The commentators are given an opportunity to make a brief rebuttal. In this issue, Janet Williams (Professor, Columbia University College of Physicians and Surgeons), Robert Spitzer (Professor, Columbia University College of Physicians and Surgeons), Herb Kutchins (Professor, California State University, Sacramento), and Stuart Kirk (Professor, University of California, Los Angeles) address the question: Should DSM be the basis for teaching social work practice in mental health?     

Young,anchored and free? Examining the dynamics of early housing pathways in Australia

Young people are remaining in the parental home for longer, and returning there more often, before attaining residential independence. In Australia, these patterns have prompted concerns about a ‘boomerang generation’ whose housing aspirations and decisions have either been directly questioned, or viewed as symptomatic of broader affordability issues. Employing a longitudinal perspective, we argue that early residential pathways reflect a mix of stable and dynamic influences involving individuals, their families, and their broader relationships. Using data from a large cohort (n = 2082) of young Australians participating in the ‘Our Lives’ research project, we examine housing pathway formation between the ages of 12/13 and 21/22. Events such as parental union dissolution or partnership formation were found to encourage home leaving, whilst being employed at a younger age and having grown up rurally predicted both leaving and remaining out of home. Close, supportive relationships with family and friends served to ‘anchor’ respondents at home for longer, and parental socioeconomic resources enabled respondents to leave home and return if needed. The findings suggest that early residential independence reflects various factors, not all of which are in young people’s control, and some of which may hinder the longer term sustainability of their living arrangements.     

A feminist perspective on COVID‐19 and the value of care work globally

The shared response to the COVID‐19 crisis demonstrates that the vast majority of society believes human wellbeing — not economic growth — should be at the centre of policy. COVID‐19 exposes the foundational role of care work, both paid and unpaid, to functioning societies and economies. Focusing on ‘production’ instead of the sustainable reproduction of human life devalues care work and those who perform it. Women’s physical and mental health, and the societies that rely on them, are at stake. When these policies are formulated, the field of feminist economics has valuable lessons for mitigating hardships as countries navigate the related economic fallout. A comprehensive response to the COVID‐19 crisis must recognize this gendered work as an integral part of the economic system that promotes human wellbeing for all.     

Data envelopment analysis 1978–2010: A citation-based literature survey

This study surveys the data envelopment analysis (DEA) literature by applying a citation-based approach. The main goals are to find a set of papers playing the central role in DEA development and to discover the latest active DEA subareas. A directional network is constructed based on citation relationships among academic papers. After assigning an importance index to each link in the citation network, main DEA development paths emerge. We examine various types of main paths, including local main path, global main path, and multiple main paths. The analysis result suggests, as expected, that Charnes et al. (1978) [Charnes A, Cooper WW, Rhodes E. Measuring the efficiency of decision making units. European Journal of Operational Research 1978; 2(6): 429–444] is the most influential DEA paper. The five most active DEA subareas in recent years are identified; among them the “two-stage contextual factor evaluation framework” is relatively more active. Aside from the main path analysis, we summarize basic statistics on DEA journals and researchers. A growth curve analysis hints that the DEA literature’s size will eventually grow to at least double the size of the existing literature.