On the Use of Shadow Prices for Sustainable Well-Being Measurement

Social Indicators Research - This paper tries to answer the following research question: can multidimensional concepts like well-being or sustainability be measured by using a single metric such as...     

Choosing Aggregation Rules for Composite Indicators

From a formal point of view, a composite indicator is an aggregate of all dimensions, objectives, individual indicators and variables used for its construction. This implies that what defines a composite indicator is the set of properties underlying its mathematical aggregation convention. In this article, I try to revise the theoretical debate on aggregation rules by looking at contributions from both voting theory and multi-criteria decision analysis. This cross-fertilization helps in clarifying many ambiguous issues still present in the literature and allows discussing the key assumptions that may change the evaluation of an aggregation rule easily, when a composite indicator has to be constructed.     

Intensity of preference and related uncertainty in non-compensatory aggregation rules

Non-compensatory aggregation rules are applied in a variety of problems such as voting theory, multi-criteria analysis, composite indicators, web ranking algorithms and so on. A major open problem is the fact that non-compensability implies the analytical cost of loosing all available information about intensity of preference, i.e. if some variables are measured on interval or ratio scales, they have to be treated as measured on an ordinal scale. Here this problem has been tackled in its most general formulation, that is when mixed measurement scales (interval, ratio and ordinal) are used and both stochastic and fuzzy uncertainties are present. Objectives of this article are first to present a comprehensive review of useful solutions already proposed in the literature and second to advance the state of the art mainly in the theoretical guarantee that weights have the meaning of importance coefficients and they can be summarized in a voting matrix. This is a key result for using non-compensatory Condorcet consistent rules. A proof on the probability of existence of ties in the voting matrix is also developed.     

Adjusting for centre heterogeneity in multicentre clinical trials with a time‒to‒event outcome

Conducting a clinical trial at multiple study centres raises the issue of whether and how to adjust for centre heterogeneity in the statistical analysis. In this paper, we address this issue for multicentre clinical trials with a time?to?event outcome. Based on simulations, we show that the current practice of ignoring centre heterogeneity can be seriously misleading, and we illustrate the performances of the frailty modelling approach over competing methods. A special attention is paid to the problem of misspecification of the frailty distribution. The appendix provides sample codes in R and in SAS to perform the analyses in this paper. Copyright © 2014 John Wiley & Sons, Ltd.     

Roma pupils’ attitudes towards education – a case study

When analysing the reasons behind the academic underachievement of Roma pupils, some teachers suggest that Roma people do not value education and that Roma children have negative attitudes towards school. With increasing frequency, Roma pupils from low socio-economic backgrounds are being researched and the research primarily adopts the perspectives of teachers and schools’ professional staff. The present study analyses attitudes towards education held by Roma pupils whose socio-economic status is comparable to the majority population and considers their perspective. The research was conducted with Roma pupils attending primary school in Maribor, Slovenia. To collect data, interviews were conducted. The study results suggest that the majority of Roma pupils from Maribor like attending school and value formal education; the majority indicated that they want to complete primary school and continue their education. The results also show that Roma pupils can be highly academically motivated if improved life conditions and improved education opportunities are provided to the Roma population.