Higher-order Bayesian Approximations for Pseudo-posterior Distributions

The theory of higher-order asymptotics provides accurate approximations to posterior distributions for a scalar parameter of interest, and to the corresponding tail area, for practical use in Bayesian analysis. The aim of this article is to extend these approximations to pseudo-posterior distributions, e.g., posterior distributions based on a pseudo-likelihood function and a suitable prior, which are proved to be particularly useful when the full likelihood is analytically or computationally infeasible. In particular, from a theoretical point of view, we derive the Laplace approximation for a pseudo-posterior distribution, and for the corresponding tail area, for a scalar parameter of interest, also in the presence of nuisance parameters. From a computational point of view, starting from these higher-order approximations, we discuss the higher-order tail area (HOTA) algorithm useful to approximate marginal posterior distributions, and related quantities. Compared to standard Markov chain Monte Carlo methods, the main advantage of the HOTA algorithm is that it gives independent samples at a negligible computational cost. The relevant computations are illustrated by two examples.     

Toward General Principles for Resilience Engineering

Maintaining the performance of infrastructure-dependent systems in the face of surprises and unknowable risks is a grand challenge. Addressing this issue requires a better understanding of enabling conditions or principles that promote system resilience in a universal way. In this study, a set of such principles is interpreted as a group of interrelated conditions or organizational qualities that, taken together, engender system resilience. The field of resilience engineering identifies basic system or organizational qualities (e.g., abilities for learning) that are associated with enhanced general resilience and has packaged them into a set of principles that should be fostered. However, supporting conditions that give rise to such first-order system qualities remain elusive in the field. An integrative understanding of how such conditions co-occur and fit together to bring about resilience, therefore, has been less clear. This article contributes to addressing this gap by identifying a potentially more comprehensive set of principles for building general resilience in infrastructure-dependent systems. In approaching this aim, we organize scattered notions from across the literature. To reflect the partly self-organizing nature of infrastructure-dependent systems, we compare and synthesize two lines of research on resilience: resilience engineering and social-ecological system resilience. Although some of the principles discussed within the two fields overlap, there are some nuanced differences. By comparing and synthesizing the knowledge developed in them, we recommend an updated set of resilience-enhancing principles for infrastructure-dependent systems. In addition to proposing an expanded list of principles, we illustrate how these principles can co-occur and their interdependencies.     

KIDS OR CASH? EXPLORING CHARTER SCHOOL RESPONSES TO DECLINING GOVERNMENT REVENUES

While the literature is extensive on school districts' revenue sources, less research has been done on the impact of donations on school district funds. In this paper, we extend the theoretical literature on crowding out of private donations by government grants for one type of nonprofit firm, namely charter schools. The theoretical model leads us to focus on the key relationships among fundraising effort, enrollment (which is tied to federal and state funding) and donations. Using a dataset on Texas charter schools we adopt a two-stage approach to examine the empirical relationship between changes in nondonor revenues and the donations received by charter schools. Like the extensive empirical estimates of the effects of government grants on donations for other types of nonprofit firms, we find evidence of crowding-out with respect to our sample of charter schools. We also find a significant, positive effect of fundraising on donations with a $1 increase in fundraising associated to a $0.58 increase in donations, a pattern consistent with overinvestment in fundraising. Enrollments exhibit a robust inverse relationship to changes in nondonor revenues. (JEL H00, H32, H50)     

ADHD and Brain Anatomy: What Do Academic Textbooks Used in the Netherlands Tell Students?

Studies of brain size of children classified with ADHD appear to reveal smaller brains when compared to ‘normal’ children. Yet, what does this mean? Even with the use of rigorously screened case and control groups, these studies show only small, average group differences between children with and without an ADHD classification. However, academic textbooks used in the Netherlands often portray individual children with an ADHD classification as having a different, malfunctioning brain that necessitates medical intervention. This conceptualisation of ADHD might serve professional interests, but not necessarily the interests of children.     

Family togetherness and the suburban ideal

An examination of the history of suburbanization in the United States shows that the suburban ideal has, from its beginnings, been associated with a vision of family togetherness, meaning that husband, wife, and children choose to spend their leisure time with one another. While the migration to the suburbs has been in part fueled by a desire to escape the mix of classes and ethnic groups of urban areas, and by government- and market-shaped economic incentives, the suburban ideal has stressed finding an environment in which family ties can be strengthened. The social and spatial structure of suburbia promotes familial isolation through a lack of public space and through an emphasis on home maintenance and home-centered entertainments. It is argued that by providing such optimal conditions for togetherness, suburbia may actually undermine familial harmony by exacerbating the strain of trying to live up to an essentially unattainable ideal.     

Sexual orientation,sexual identity,and the question of choice

Sexual orientation, determined early in life, may or may not match sexual identity, which can change over time. Starting with a review of some definitions of homosexuality in the literature, the author offers a definition that differentiates between orientation and identity. She goes on to describe several possible routes from gay orientation to gay identity, explains discrepancies, acknowledges the potential threat to subjective identity when sexual identity shifts, and argues that identity, not orientation, is open to choice. Two case examples illustrate some of these points.     

Accountability of nonprofit organizations and those who control them: The legal framework

Legal accountability, understood as either an obligation to meet prescribed standards of behavior or an obligation to disclose information about one's actions even in the absence of a prescribed standard of behavior, is imposed on nonprofit organizations and those who manage them by state law and by fedral tax-exemption law. A perception that charities are exempt from both the electoral control that holds government accountable and the market forces that discipline business encourages a tendency to look to law to ensure accountability in the charitable sector, to perceive that shortcomings in the law are responsible for shortcomings in the sector, and to conclude that repair or reconstruction of the legal framework is the appropriate corrective. However, although the legal framework is far from perfect, sweeping change will not likely solve the problems and may well undermine the most positive characteristics of the sector. Some aspects of accountability cannot and should not be the subject of legal rules. Efforts to make charities accountable by redrawing legal standards of behavior in accord with popularly recognized standards of propriety, or even “excellence,” are likely to be counterproductive. Instead, adjustment of the legal framework in the hope of improving accountability should be incremental and should be evaluated in the context of organizing principles and core values that reflect our best understanding of the unique strengths of the sector and the functions it serves in our society.     

Intervening with homeless youths: Direct practive without blaming the victim

Homeless adolescents present with an array of difficulties, being perhaps the neediest group of youths in the U.S. While policy and programmatic needs of this population are often discussed, their clinical needs can be overlooked for fear of implied victin blaming. This paper examines characteristics of homeless youths, diverse practice methods that have been applied to this population, and related theories. Three models of practice are descibed, with examples, as potentially applicable to indiidual and family intervention with this population.