Female sterilizing operations in New South Wales: A demographic perspective

This paper examines trends in female sterilizing operations from a demographic perspective. These operations have declined in New South Wales since 1981, with a substantial drop in tubal ligation and hysterectomy, particularly among younger women. The decline in sterilization of women of childbearing age has been due to postponement of births. Younger women have avoided terminal methods of birth control and continued to use methods, such as oral contraceptives and back-up abortion, which allow for a pregnancy at a later age. Sterilizing operations still remain the most commonly reported means of birth control by women over age 35.     

Predictive control of posterior robustness for sample size choice in a Bernoulli model

In this article we consider the sample size determination problem in the context of robust Bayesian parameter estimation of the Bernoulli model. Following a robust approach, we consider classes of conjugate Beta prior distributions for the unknown parameter. We assume that inference is robust if posterior quantities of interest (such as point estimates and limits of credible intervals) do not change too much as the prior varies in the selected classes of priors. For the sample size problem, we consider criteria based on predictive distributions of lower bound, upper bound and range of the posterior quantity of interest. The sample size is selected so that, before observing the data, one is confident to observe a small value for the posterior range and, depending on design goals, a large (small) value of the lower (upper) bound of the quantity of interest. We also discuss relationships with and comparison to non robust and non informative Bayesian methods.     

On the predictive performance of a non-optimal action in hypothesis testing

Statistical Methods & Applications - In Bayesian decision theory, the performance of an action is measured by its posterior expected loss. In some cases it may be convenient/necessary to use a...     

Networks of Contention: The Shape of Online Transnationalism in Early Twenty-First Century Social Movement Coalitions

The study of new media use by transnational social movements is central to contemporary investigations of social contention. In order to shed light on the terrain in which the most recent examples of online mobilization have grown and developed, this paper combines the interest in the transnational dynamics of social contention and the exploration of the use of new information and communication technologies (ICTs) for protest action. In specific terms, the study investigates how early twenty-first century social movement coalitions used Internet tools to build symbolically transnational collective identities. By applying a hyperlink network analysis approach, the study focuses on a website network generated by local chapters of the World Social Forum (WSF), one of the earliest social movement coalitions for global justice. The sample network, selected through snowball sampling, is composed of 222 social forum websites from around the world. The study specifically looks at hyperlinks among social forum websites as signs of belonging and potential means of alliance. The analysis uses network measures, namely of cohesion, centrality, structural equivalence and homophily, to test dynamics of symbolic collective identification underlying the WSF coalition. The findings show that in early twenty-first century transnational contention, culture and place still played a central role in the emergence of transnational movement networks.     

Intercultural Education in Initial and Field Training

In Italy teachers for nursery and primary schools are trained in many ways. Although in this complex system numerous initiatives regarding the implementation of intercultural education have been taken by the Ministry of Education, practice is still inconsistent and a great deal is left to the initiative of individual teachers, principals and schools. The Teachers Centre of Democratic Initiative (CIDI) realised two projects in the field of language education. The basic idea was to ascertain to what extent the language used in school may pose an obstacle for children whose mother tongue is not the school language. The follow‐up was a field training course on intercultural issues. The objectives were to identify didactic instruments and procedures designed to transform the way in which a foreign child would be viewed from being a “problem” to being appreciated and valued. The paper closes with a list of elements that may be viewed as cornerstones of training activity in an intercultural framework.     

A tale of two cities: an experiment on inequality and preferences

Theory and Decision - The existence of a strong link between socio-economic background and individual preferences has been documented among both children and grown-ups. Here, we study whether such...