Duverger's Law, Penrose's Power Index and the Unity of the UK

As predicted by Duverger's Law, the UK has had two-party competition for long periods in most electoral districts. However, there are different patterns of two-party competition in different districts and more than two effective parties in the Commons. Since 1874, parliament has always contained parties wishing to modify the Union and contesting seats only outside England. By calculating the Penrose power index for all parties in the House of Commons for all general elections since 1874, we identify when such parties were pivotal. We explain various legislative changes (for example the Crofters Act 1886, the first three Irish Home Rule Bills, the Parliament Act 1911) and non-changes (for example the failure to enact female suffrage before 1914) by reference to the Penrose index scores. The scores also explain how and why policy towards Scotland, Wales and Northern Ireland changed and did not change in the 1970s.     

A Count Data Model of Technology Adoption

This paper investigates the main determinants of the adoption of flexible production technologies (FPTs), using a plant-level dataset of Portuguese manufacturing industry. Besides using a new dataset, this paper extends the framework of previous studies on technology adoption by taking into account the effect of demand uncertainty as an additional determinant of adoption. In order to examine this relationship, several econometric models for count data are estimated. These models deal with the discrete nature of the dependent variable and firm specific unobservable characteristics arising from the cross-section context. The main findings of the paper are: (i) rank effects and technological regimes are important determinants of technology adoption, as put forward in previous models of technology diffusion; (ii) demand uncertainty has a significant positive impact on the likelihood of adopting FPTs, which suggests that technological heterogeneity is important when modelling firms' investment decisions; (iii) the estimates were improved after controlling for excess zeros and overdispersion that characterizes our data.     

NORTHERN TERRITORY

As a consequence of the constitutional development which has occurred in the Northern Territory since 1976, a veritable administrative revolution has taken place. The devolution of State-type functions from Commonwealth to local control and the legal establishment of a Northern Territory government on 1 July 1978 necessitated fundamental changes to the administrative structure. However, the pace and scale of change, so dramatic a feature of the period between 1977 and 1979, were much less pronounced in 1980 which was a year of relative stability. In political terms, the highlight of 1980 was the Legislative Assembly elections in June which resulted in the return of the Country-Liberal Party government. Its continuation in office was an important factor in ensuring a climate for administrative stability.     

Risk factors for severe inter-sibling violence: a preliminary study of a youth forensic sample

The perpetration of severe inter-sibling violence (SISV) remains a largely unexplored area of family violence. This article describes an investigation of risk factors for intentional SISV perpetration. A sample of 111 young people under the care of the Scottish criminal justice or welfare systems was studied. A SISV perpetration interview schedule was developed to measure the influence of 43 potential predictor variables. The Buss and Perry Aggression Questionnaire and Levenson's Self-Report Psychopathy Scale were also employed in this exploratory analysis.     

Intimate Partner Victimization and Depressive Symptoms: Approaching Causal Inference Using a Longitudinal Twin Design

Journal of Quantitative Criminology - While a wealth of research reports a robust association between intimate partner victimization and depression, the relationship has not been tested using...