The Early Development Instrument: An Examination of Convergent and Discriminant Validity

The convergent and discriminant validity of the Early Development Instrument (EDI), a teacher-rated assessment of children’s “school readiness”, was investigated in a multicultural sample of 267 kindergarteners (53% male). Teachers evaluations on the EDI, both overall and in five domains (physical health/well-being, social competence, emotional maturity, language/cognition, communication/general knowledge), were related to direct, child-based assessments of performance on two standardized measures of school readiness, and measures of phonological awareness and early social competence. Regression analysis indicated that together the four comparison measures accounted for 36% of variance in overall EDI scores, each making a significant and unique contribution. Results supported the convergent validity of overall EDI scores but not the discriminant validity of EDI domain scores. Moreover, correlations between EDI scores and comparison measures varied widely across teachers, suggesting considerable individual differences in teacher’s ability to evaluate school readiness relative to direct, child-based assessments, and confirming that the EDI is more appropriate for deriving inferences at higher aggregated levels such as community or region. The validation of EDI domain scores remains an important challenge in future research.     

The child welfare response to serious nonaccidental head trauma

Serious nonaccidental head trauma (NHT) can leave permanent neurological damage in children who survive abuse. This study reports on child welfare's handling of NHT cases compared with cases of physical abuse and head trauma due to neglect with regard to placement in foster care, reunification with family, and safety issues. The results show that workers placed children with NHT in foster care immediately after the abuse but treated them no differently than other physically abused children regarding reunification.     

Improving access to health care for foster children: the Illinois model

Children in foster care have lower health status than do their peers and limited access to health care. The Illinois Department of Children and Family Services developed HealthWorks, a separate primary care preferred provider system for children in foster care. This study compared claims data for children in HealthWorks with children not enrolled in HealthWorks and with children in Aid to Families with Dependent Children (AFDC) who had never entered foster care. Children enrolled in HealthWorks were more likely than were other children to receive all of the services except general inpatient hospitalizations. They had greater odds of receiving general exams and physicians' services and were more likely to visit the emergency room than children who were not enrolled. They were more likely to receive all of the measured services when compared with children receiving Medicaid through AFDC.     

Working artefacts: ethnomethods of the prototype

This paper follows recent science studies in theorizing information technologies as socio-material configurations, aligned into more and less durable forms. The study of how new technologies emerge shifts, on this view, from a focus on invention to an interest in ongoing practices of assembly, demonstration, and performance. This view is developed in relation to the case of the 'prototype', an exploratory technology designed to effect alignment between the multiple interests and working practices of technology research and development, and sites of technologies-in-use. In so far as it is successful, the prototype works as an exemplary artefact that is at once intelligibly familiar to the actors involved, and recognizably new.     

The city in the country: Growing alternative food networks in Metropolitan areas

Alternative food networks (AFNs) are commonly defined by attributes such as the spatial proximity between farmers and consumers, the existence of retail venues such as farmers markets, community supported agriculture (CSA) and a commitment to sustainable food production and consumption. Focusing upon processes rather than attributes, this paper identifies two place-based processes that both promote and constrain the emergence and development of AFNs. Urbanization and rural restructuring are critical to the development of AFNs. AFNs are not a “thing” to be described, but rather emerge from political, cultural and historical processes. The interactions of urbanization and rural restructuring produce AFNs that are differentiated and marked by uneven development that does not necessarily support all farmers participating in the network. This indicates both the fragility and the dynamism inherent in AFNs that are tied to metropolitan development and change. Paradoxically, increasing urban demand for seasonal, and organic produce grown ‘close to home’ and the processes of rural restructuring which emphasize small-scale sustainable family farming and its direct food linkages to cities do not necessarily enable all farmers to consistently make a living from season to season. Evidence for these claims comes from an in-depth, qualitative case study reliant upon participant observation, in-depth interviews and draws from a statewide farmer survey and a regional consumer survey in Washington State.     

Evaluation of trace evidence in the form of multivariate data

Summary.  The evaluation of measurements on characteristics of trace evidence found at a crime scene and on a suspect is an important part of forensic science. Five methods of assessment for the value of the evidence for multivariate data are described. Two are based on significance tests and three on the evaluation of likelihood ratios. The likelihood ratio which compares the probability of the measurements on the evidence assuming a common source for the crime scene and suspect evidence with the probability of the measurements on the evidence assuming different sources for the crime scene and suspect evidence is a well-documented measure of the value of the evidence. One of the likelihood ratio approaches transforms the data to a univariate projection based on the first principal component. The other two versions of the likelihood ratio for multivariate data account for correlation among the variables and for two levels of variation: that between sources and that within sources. One version assumes that between-source variability is modelled by a multivariate normal distribution; the other version models the variability with a multivariate kernel density estimate. Results are compared from the analysis of measurements on the elemental composition of glass.     

On minimaxity of the normal precision matrix estimator of Krishnamoorthy and Gupta

We consider the orthogonally invariant estimation problem of the inverse of the scale matrix of Wishart distribution using Stein's loss (entropy loss). In this problem Krishnamoorthy and Gupta [2] Krishnamoorthy, K. and Gupta, A. K. (1989). Improved minimax estimation of a normal precision matrix. Canad. J. Statist., 17: 91–102. [Crossref], [Web of Science ®] , [Google Scholar] proposed an estimator and showed its good performance in a Monte Carlo simulation. They conjectured their estimator is minimax. Perron [3] Perron, F. (1997). On a conjecture of Krishnamoorthy and Gupta. J. Multivariate Anal., 62: 110–120.  [Google Scholar] proved its minimaxity for p?=?2. In this paper we prove it for p?=?3 by using a new method.     

Inferactive data analysis

We describe inferactive data analysis, so-named to denote an interactive approach to data analysis with an emphasis on inference after data analysis. Our approach is a compromise between Tukey's exploratory and confirmatory data analysis allowing also for Bayesian data analysis. We see this as a useful step in concrete providing tools (with statistical guarantees) for current data scientists. The basis of inference we use is (a conditional approach to) selective inference, in particular its randomized form. The relevant reference distributions are constructed from what we call a DAG-DAG—a Data Analysis Generative DAG, and a selective change of variables formula is crucial to any practical implementation of inferactive data analysis via sampling these distributions. We discuss a canonical example of an incomplete cross-validation test statistic to discriminate between black box models, and a real HIV dataset example to illustrate inference after making multiple queries on data.     

Adoption and permanence planning in Scotland: Impact of the Adoption and Children (Scotland) Act 2007 on key processes and timescales

Adoption and permanence planning has been a key feature of Scotland's policy in relation to children and young people who are “looked after.” Although policy and law has significantly developed in recent years, there has been comparatively little research on permanence processes in Scotland. This paper outlines key findings from the first comprehensive study of permanence planning in Scotland. It examines the process for two cohorts of children where adoption or other types of permanence orders were made. The children were selected under the long standing Adoption (Scotland) Act 1978 and the more recent Adoption and Children (Scotland) Act 2007. In total, 300 cases were examined, analysing data from the children's first contact with services through to the order made by the Scottish Courts. This paper pays particular attention to the timescales found at key stages under the two sets of legislation and asks what difference the change in legislation has made.     

Unaccompanied migrant children and indebted relations: Weaponizing safeguarding

UK statutory guidance for practitioners suggests that indebtedness is an area where safeguarding red flags should be raised and action taken to minimize the risk of exploitation. Yet, our research shows that unaccompanied migrant children have complex indebted relationships, which can range from extractive to connective. Drawing on interviews with unaccompanied children, we show that these indebted relationships can include financial debt to smugglers, responsibilities to support transnational families, as well as social obligations to peers and others. Their accounts present a nuanced understanding of the taboo nature of indebted relationships, not to be shared with the practitioners in their lives. This is due, in part, to the potential threat of reporting to the Home Office, which might jeopardize their immigration status. In response to this weaponization of social care, we demonstrate how children turn to peer networks of support, creating their own alternative forms of social protection. In so doing, we complicate critiques of adultification, which traditionally highlight the ways that racially minoritized children may be treated as adults—to their detriment. In so doing, we show that because indebtedness is normatively linked to adulthood, unaccompanied children's hopes and fears may be rendered unsayable and therefore unsupportable in social care, all in the name of safeguarding.