Prospective assessment of late-luteal phase dysphoric disorder

This investigation evaluated a method for the prospective assessment of the symptoms of premenstrual syndrome (PMS). The American Psychiatric Association has proposed a diagnostic category for PMS in the DSM-III-R entitled late-luteal phase dysphoric disorder (LLDD). The criteria for this disorder include prospective documentation of at least two symptomatic cycles. Two groups of women were studied, one group that met the DSM-III-R diagnostic criteria for LLDD and a comparison group that did not. Subjects recorded symptoms related to PMS for two menstrual cycles. A clinically significant worsening of symptoms was defined as a symptom increase during the premenstruum of greater than one standard deviation above normal. These effect sizes were then used to determine if the subject met the DSM-III-R criteria for prospective confirmation. Data analysis showed that although the LLDD group showed evidence for PMS in several symptom groups, only a minority (31%) met the requirement of prospective confirmation of significant PMS symptoms for the two cycles recorded. These results were discussed in terms of the need for prospective behavioral assessment of LLDD and the implications of these findings for past and future research.Portions of this paper were derived from the master's thesis of the first author.     

The simplicity of theories: Its degree and form

Almost all commentators acknowledge that among the grounds on which scientists perform theory-choices are criteria of simplicity. In general, simplicity is regarded either as only a logico-empirical quality of a theory, diagnostic of the theory's future predictive success, or as a purely aesthetic or otherwise extra-empirical property of it. This paper attempts to demonstrate that the simplicity-criteria applied in scientific practice include both a logicoempirical and a quasi-aesthetic criterion: to conflate these in an account of scientists' theory-choice is to court confusion.     

Bayesian item selection criteria for adaptive testing

Owen (1975) proposed an approximate empirical Bayes procedure for item selection in computerized adaptive testing (CAT). The procedure replaces the true posterior by a normal approximation with closed-form expressions for its first two moments. This approximation was necessary to minimize the computational complexity involved in a fully Bayesian approach but is no longer necessary given the computational power currently available for adaptive testing. This paper suggests several item selection criteria for adaptive testing which are all based on the use of the true posterior. Some of the statistical properties of the ability estimator produced by these criteria are discussed and empirically characterized.Portions of this paper were presented at the 60th annual meeting of the Psychometric Society, Minneapolis, Minnesota, June, 1995. The author is indebted to Wim M. M. Tielen for his computational support.     

Material handling device selection in cellular manufacturing

This paper presents a new multi‐criteria decision model for the material handling device (MHD) selection problem in cellular manufacturing systems. Given a set of manufacturing cells based on several automatic work‐centres, the technique makes it possible to select a particular MHD for each cell in an integrated way, with different constraints being taken into consideration. The approach is based on two different multi‐attribute analyses executed with analytic hierarchy process (AHP) methodology, and a final integer linear programming including important limitations faced by the designer when making MHD investment decisions. An example using real data is provided to illustrate this methodology. Copyright © 2002 John Wiley & Sons, Ltd.     

‘Are you a woman—or a flower?’: The capacity to experience beauty1

Being surprised by beauty, being drawn to and moved by it and surrendering to its sensory nature are all part of beauty's emotionally transformative power. And yet, psychoanalysis has had little to say about such an enriching dimension of psychological life. The author highlights how experiencing beauty is a capacity that is not isolated but is part of the lifelong experience of being changed by and changing the experience of the world we live in. She suggests that the capacity to experience beauty takes different forms at distinct points in development and in psychoanalytic treatments. The author describes two clinical occasions from a case where an analytic pair struggled to develop a greater capacity to experience beauty over time. She discusses how a theory of the aesthetic conflict was useful in helping to understand her patient's inner object world but was not sufficient when it came to understanding the experience of beauty. She shows how for both patient and analyst, experiencing beauty's full effect required responding to the call toward emotional life, surrendering to the surprise and the unknown, and letting go of the mind's struggle to find meaning and opening up to transforming and being transformed through sensory experience.     

Using information criteria to determine the number of regimes in threshold autoregressive models

Threshold autoregressive models can be used to study processes that are characterized by recurrent switches between two or more regimes, where switching is triggered by a manifest threshold variable. In this paper the performance of diverse information criteria for selecting the number of regimes in small to moderate sample sizes (i.e., n=50,100,200) is investigated. In addition it is investigated whether these information criteria can be used to determine whether the residual variances are identical across the regimes. It is concluded that for small sample sizes should be preferred, while for larger sample sizes either BIC or should be considered: The latter is the only information criterion that includes a penalty for the unknown threshold parameters.     

Age of Onset of ADHD in a Sample of Elementary School Students

Examined the age of onset of ADHD symptoms and subtypes using parent ratings of a large sample of elementary school students. Results showed: (1) in children with ADHD-combined type, hyperactive-impulsive symptoms emerged at younger ages than inattention symptoms; (2) about one-fifth of children who met symptom count and impairment criteria for ADHD did not meet the age of onset criterion; (3) Children who did not meet the age of onset criterion consisted primarily of children with inattention problems; and (4) children who did not meet the age of onset criterion had more impaired parent-child relationships, self-esteem, family functioning, and higher overall impairment ratings than children who did meet the criterion. These results raise questions about the validity of the age of onset criterion for ADHD as formulated in DSM-IV.     

A dynamic objective–subjective structure for forest management focusing on environmental issues

In this paper a decision-making process is applied to a Chilean forestry firm that must deal with a host of environmental variables as well as profit making. At the core of this process is a ‘dynamic objective–subjective structure’ founded on the approach that decision making is about comprehending the preferences of the various parties involved and expanding the set of alternatives open to the decision makers. This is in contrast to many models that aim at finding the ‘best alternative’ and to decision analysis approaches that focus on presenting preferences via value functions. The paper describes in chronological order, following the sessions of a decision-making process, how the various components of the structure emerged. In doing so it demonstrates how the process led to an understanding of the real effects of dealing with the environment and how comprehending the preferences led to the introduction of new decision variables. Copyright © 2007 John Wiley & Sons, Ltd.     

Evolution of multi‐criteria analysis: a scientometric analysis

The field of multi‐criteria analysis has known very important developments during the last 20 years, if one considers the very large amount of activities that it has generated and continues to generate (papers in journals, a dedicated journal, books, meetings, applications, …). Even if multi‐criteria analysis has reached some maturity, its future is subject to questions and debate among its researchers: what is the evolution of the field? What is its structure? Is it integrating new topics? In order to answer such questions at least partially, we have studied multi‐criteria analysis literature by means of the method of associated words (scientometric analysis) and the software ‘Leximappe’. All the abstracts of the papers which are relative to multi‐criteria analysis and are included in the bibliographic ABI‐INFORM database from 1985 to 1996 have been analysed. In this paper, we will present some results of this study. Copyright © 1999 John Wiley & Sons, Ltd.