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.     

Changing Industrial Metabolism: Methods for Analysis

Research in the field of industrial metabolism traditionally has been focused on measuring and describing physical flows of economic systems. The metabolism of economic systems, however, changes over time, and measuring material flows is insufficient to understand this process. Understanding the relation between economic activities and material flows can help to unravel the socio-economic causes of these physical flows. Three issues are addressed: The importance of spatial scales and trade flows, empirical analysis of relations between economic development and material flows, and treatment of behaviour of and interactions between stakeholders. For each of these issues, methods for analysis are suggested.     

Nationwide Newspaper Coverage of Immigration Reform: A Community Structure Approach

A community structure analysis compared community characteristics and nationwide coverage of immigration reform in newspapers in 21 major U.S. cities, sampling all 250+ word articles April 23, 2010 to November 12, 2013. The resulting 262 articles were coded for “prominence” and “direction” (“favorable,” “unfavorable,” or “balanced/neutral” coverage), then combined into each newspaper's composite “Media Vector” (range = .632 to ?.4800). Nineteen of 21 newspapers showed favorable coverage of immigration reform. Pearson correlations yielded 4 significant results, the most powerful of which supported immigration reform. The “vulnerability” hypothesis (media “mirror” the interests of marginal/disadvantaged groups) was essentially confirmed. Higher percentages below the poverty line (r = .607, p = .003) and higher crime rates (r = .490, p = .017) correlated with more favorable coverage of immigration reform. By contrast, higher percentages of women in the workforce (r = ?.543, p = .008) and higher proportions of hate crimes (r = ?.403, p = .048) were linked with less favorable coverage. Regression analysis yielded the percentage living below the poverty line accounting for 37.2% of the variance, and proportion of hate crimes yielded an additional 19.1% of the variance. The Midwest had by far the most favorable coverage of immigration reform, more than any other region.     

Ecologically defining the mistreatment of adolescents

Ecologically defined, the problem of adolescent/family conflict for otherwise “normal” families is a reaction to crisis in the life cycle of the family. A family's success in weathering the crisis is indicated by their successful maturation to the next stage of the cycle; we can assume that in such cases the ratio of stress to coping ability was such that the family could integrate that stress. When conflict escalates to abuse and neglect, however, the indication is that stress has outstripped coping ability, and the implication is for stress-reducing intervention quite unlike the standard existing interventions in either the juvenile justice or child welfare systems, which negatively label family members, make them adversaries, fragment their coping capabilities, and even subject them at times to situations worse than those for which they needed help originally. The interventions called for are those that support beleaguered families; that are based on conceptualizations of people as adaptable and capable of solving their own problems if they are given adequate supports.     

Vacant lot soil degradation and mowing frequency shape communities of belowground invertebrates and urban spontaneous vegetation

Urban Ecosystems - Vacant land in legacy cities is increasingly recognized as a resource to support biodiversity and improve the quality of life for residents. However, the capacity for vacant lot...     

Axiomatic Based Decomposition for Conceptual Product Design

This paper describes a structured methodology for decomposing the conceptual design problem in order to facilitate the design process and result in improved conceptual designs that better satisfy the original customer requirements. The axiomatic decomposition for conceptual design method combines Alexander's network partitioning formulation of the design problem with Suh's Independence Axiom. The axiomatic decomposition method uses a cross‐domain approach in a House of Quality context to estimate the interactions among the functional requirements that are derived from a qualitative assessment of customer requirements. These interactions are used in several objective functions that serve as criteria for decomposing the design network. A new network partitioning algorithm is effective in creating partitions that maximize the within‐partition interactions and minimize the between‐partition interactions with appropriate weightings. The viability, usability, and value of the axiomatic decomposition method were examined through analytic comparisons and qualitative assessments of its application. The new method was examined using students in engineering design capstone courses and it was found to be useable and did produce better product designs that met the customer requirements. The student‐based assessment revealed that the process would be more effective with individuals having design experience. In a subsequent assessment with practicing industrial designers, it was found that the new method did facilitate the development of better designs. An important observation was the need for limits on partition size (maximum of four functional requirements.) Another issue identified for future research was the need for a means to identify the appropriate starting partition for initiating the design.     

Diversity as a Basis for Shared Organizational Identity: The Norm Congruity Principle

Although the social identity approach is generally used to explain the negative consequences of diversity for the formation of a common identity within organizations, we propose that social identity processes can also lead employees to evaluate their differences in a positive way. We propose norm‐congruency as a central principle to understand these issues. We argue that when differences among team members in organizations are congruent with norms and expectations, diversity can become a basis for organizational identification.     

An empirical analysis of alleged misunderstandings of coefficient alpha

Cronbach’s alpha is the most frequently used measure to investigate the reliability of measurement instruments. Despite its frequent use, many warn for misinterpretations of alpha. These claims about regular misunderstandings, however, are not based on empirical data. To understand how common such beliefs are, we conducted a survey study to test researchers’ knowledge of and beliefs about alpha. For this survey, we selected authors from recent papers, in which alpha was used. The results provide empirical evidence for the claims that researchers have difficulty interpreting alpha in a proper way. At the same time, we expounded the claims, by showing that whereas some beliefs are fairly typical, others are not so often seen. This non-technical paper, aimed at both statisticians and substantive researchers, is concluded by providing a few suggestions that could be helpful to get us out of the current stalemate regarding the usability of alpha and its alternatives.