Estimation and Testing in Elliptical Functional Measurement Error Models

The purpose of this article is to investigate estimation and hypothesis testing by maximum likelihood and method of moments in functional models within the class of elliptical symmetric distributions. The main results encompass consistency and asymptotic normality of the method of moments estimators. Also, the asymptotic covariance matrix of the maximum likelihood estimator is derived, extending some existing results in elliptical distributions. A measure of asymptotic relative efficiency is reported. Wald-type statistics are considered and numerical results obtained by Monte Carlo simulation to investigate the performance of estimators and tests are provided for Student-t and contaminated normal distributions. An application to a real dataset is also included.     

A General Class of Estimators for the Linear Regression Model Affected by Collinearity and Outliers

In this article, a general class of estimators for the linear regression model affected by outliers and collinearity is introduced and studied in some detail. This class of estimators combines the theory of light, maximum entropy, and robust regression techniques. Our theoretical findings are illustrated through a Monte Carlo simulation study.     

Robust Bayesian inference in STAR models with neighbourhood effects

In this paper we propose a robust Bayesian procedure of estimation, testing, validation and selection of spatio-temporal autoregressive models (STAR) with neighbourhood effects applied to the appraisal of dwelling prices. The methodology does not depend on asymptotic results and, unlike previously procedures proposed in the literature, takes into account the uncertainty associated to the estimation of the neighbourhood parameters of the model, giving more realism to the analysis. Moreover, a sequential algorithm to elaborate fast on-line forecast, is provided. The methodology is illustrated by means of a practical case of the real estate market of Zaragoza.     

A Generalized Bayes Rule for Prediction

In the case of prior knowledge about the unknown parameter, the Bayesian predictive density coincides with the Bayes estimator for the true density in the sense of the Kullback-Leibler divergence, but this is no longer true if we consider another loss function. In this paper we present a generalized Bayes rule to obtain Bayes density estimators with respect to any α-divergence, including the Kullback-Leibler divergence and the Hellinger distance. For curved exponential models, we study the asymptotic behaviour of these predictive densities. We show that, whatever prior we use, the generalized Bayes rule improves (in a non-Bayesian sense) the estimative density corresponding to a bias modification of the maximum likelihood estimator. It gives rise to a correspondence between choosing a prior density for the generalized Bayes rule and fixing a bias for the maximum likelihood estimator in the classical setting. A criterion for comparing and selecting prior densities is also given.     

Service vs. manufacturing: how to address more effectively eco-innovation public policies by disentangling the different characteristics of industries

Eco-innovation is actually a fashionable topic, and several researchers are working on understanding the defining characteristics of firms that consider the environment as a priority when innovating. To date most of these studies have been carried out on manufacturing industries. This article investigates the similarities and differences among service and manufacturing firms. An empirical analysis of a sample of 5509 Spanish companies shows that the variables affecting the eco-innovative orientation of firms are quite similar. Results reveal that manufacturing firms have higher orientation toward the environment than service firms. Furthermore, highly polarized positions in environmental aspects can be found. Despite the limitations of the study, conclusions may help public policy to encourage environmental proactivity in service industry and innovation.     

Morphosyntactic development and educational style of parents in neglected children

This research analyses the morpho-syntactical competence of children in care and the educational style of their parents. The studies from the literature give no specific data concerning how the morphological and syntactic components are affected in children suffering from neglect. These studies point to important deficiencies in language development, but do not specify what such difficulties actually are. This research is carried out within the framework of the residential care children's homes in the region of Extremadura (Spain). The morpho-syntactic competence of the children and the parental educational style of a total of 74 children in residential care are analysed. The subjects are 41 males and 33 females, between 6 and 18 years of age. We apply the ‘Objective Language Criteria Test’ (BLOCScreening) to evaluate their linguistic development and the ‘Autoevaluative Multifactorial Child Adaptation Test’ (TAMAI) to determine educational style. The presence of difficulties in morphosyntaxis is evident. The children with a low dominion of morphology and syntax perceive a more punitive style in the parents. The difficulties in morphosyntax are manifested both expressive and receptive. Use short sentences to frequent omission of morphological markers. Comprehension problems are lower than those of expression, but it shows a erroneous understanding of some grammatical structures, and grammatical errors in spontaneous speech. Use fewer morphologically complex words in their narratives. Have difficulty in organising the content of the speech and the use of cohesive devices (using the precision and accuracy of the conjunctions used in compound sentences). We must stress the need to carry out early prevention and intervention programmes in order to promote an increase in both the quantity and the quality of language stimulation. From there, the need to set up intervention programmes that influence the linguistic competence of children who have suffered abuse.     

We did it together: a participatory action research study on poverty and disability

This article presents the perspective of both non-disabled and developmentally disabled people working together in a research project on poverty and disability. Our study used a participatory action research approach that challenges the norm of exclusion in the research process. Control of the research agenda has been inclusive and shared to varying degrees in accordance with the needs and desires of the members of an advisory committee of developmentally disabled people living with low income. We reflect on our process of working together according to four principles of participatory action research with disabled people. We discuss our successes and challenges enacting these principles in the hopes that future researchers can build upon our experience to be more inclusive of developmentally disabled people in their work.     

Reliability and Validity of the European Portuguese Version of the Social Touch Questionnaire

Social touch is essential for physical and emotional well-being. However, different meanings can be attributed to physical contact during social interactions and may generate bonding or avoidant behaviors. This personal and unique experience is not usually taken into account in health and social care services. The aim of this study is to produce a valid and reliable European Portuguese version of the Social Touch Questionnaire (STQ, Wilhelm et al. in Biol Psychol 58:181–202, 2001. doi: 10.1016/S0301-0511(01)00113-2). The STQ is a self-report questionnaire for adolescents and adults measuring behaviors and attitudes towards social touch. The original version was translated into European Portuguese using a forward-back translation process and its feasibility was examined. To evaluate the psychometric properties, a total of 242 Portuguese university students participated in the study (21.3 ± 3.8 years). The STQ was considered feasible, showed adequate internal consistency (Cronbach’s α = .734), and the test–retest correlation with the STQ items demonstrated a high concordance between the tests over a two-week interval (ICC = .990; n = 50). Validity tests were performed, comparing the total score of the STQ with that of the anxiety and avoidance subscales of the Social Interaction and Performance Anxiety and Avoidance Scale (SIPAAS). A very significant conceptual convergence was confirmed between the STQ and with the SIPAAS-Anxiety (r = .64; p < .0001) and with the SIPAAS-Avoidance (r = .59; p < .0001). The exploratory factor analysis, with Promax rotation, revealed 3 factors: dislike of physical touch, liking of familiar physical touch and liking of public physical touch (Cronbach’s alphas ranged from .68 to .75). Psychometric properties confirmed the adaptation of the STQ to the Portuguese culture. It is a reliable and valid self-report questionnaire and it appears to be a useful tool to assess behaviors and attitudes towards social touch.     

‘I Know It Sounds Nasty and Stereotyped’: Searching for the Competent Domestic Worker

The recent upsurge of commercial companies in the market of domestic services has drawn attention in various countries. However, little is known about the operation of these companies and the extent to which their endeavours to industrialize paid domestic work reproduce or break away from historical patterns of gender inequality. In this article, the theoretical debate is informed by empirical data collected in the city area of Lisbon, in Portugal. In particular, open‐ended interviews with the managers of 15 companies provide a privileged view over the practices of recruitment and selection. Multiple sources of segmentation are associated with gendered understandings of class and ethnicity. Far from a paradigm in which stimuli toward industrialization and professionalization would overthrow the traditional centrality of trust and personal bonds in domestic service relationships, managers seek to gain a competitive advantage over rival companies and the informal economy precisely by mastering the trade of trust and personal bonds.