The association of attention deficit hyperactivity disorder with socioeconomic disadvantage: alternative explanations and evidence

addresses: ESRC Centre for Genomics in Society (Egenis) & Institute of Health Research, University of Exeter Medical School, Exeter, UK.OnlineOpen Article. This is a copy of an article published in the Journal of Child Psychology and Psychiatry. This journal is available online at: http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1469-7610Studies throughout Northern Europe, the United States and Australia have found an association between childhood attention deficit hyperactivity disorder (ADHD) and family socioeconomic disadvantage. We report further evidence for the association and review potential causal pathways that might explain the link.ESRC’s Secondary Data Analysis InitiativeNational Institute for Health Research (NIHR) Collaboration for Leadership in Applied Health Research and Care (CLAHRC) for the South West Peninsul

The effect of community service learning on undergraduate persistence in three institutional contexts

This study explores the role of community service learning (CSL) in promoting undergraduate persistence relative to other experiences students have in college, their entering characteristics, and institutional features. By following the 2009 freshmen cohort at three Midwestern universities over three years, this study finds that students’ experiences while in college (CSL, full-time enrollment, and GPA) have a stronger effect on the likelihood of reenrollment than students’ entering characteristics (age, gender, and race). Our separate analyses for each institution allow us to consider how the differences between the three universities (student body composition, retention rate, CSL program) might lead CSL courses to play a particularly critical role in student persistence in certain types of universities

The effect of community service learning on undergraduate persistence in three institutional contexts.

This study explores the role of community service learning (CSL) in promoting undergraduate persistence relative to other experiences students have in college, their entering characteristics, and institutional features. By following the 2009 freshmen cohort at three Midwestern universities over three years, this study finds that students’ experiences while in college (CSL, full-time enrollment, and GPA) have a stronger effect on the likelihood of reenrollment than students’ entering characteristics (age, gender, and race). Our separate analyses for each institution allow us to consider how the differences between the three universities (student body composition, retention rate, CSL program) might lead CSL courses to play a particularly critical role in student persistence in certain types of universities

Let us pick the organization: understanding adult student perceptions of service-learning practice

Service learning offers a pedagogy by which adult students are guided toward understanding their potential for leadership in civic life and community development, strengthening the impact that universities have in communities. In this study, qualitative data is analyzed to determine how adult students perceive their service-learning experiences and what the university could do to involve them more in the future. Respondents provide some evidence that they value opportunities to give back to communities where they have a connection; appreciate hands-on learning that is integrated with classroom learning; benefit from placement experiences that build upon prior knowledge and skills; and prefer greater choice in the selection of their service-learning placement. As the number of adult students entering higher education continues to rise and their retention remains a challenge, understanding how these students are engaged by service learning becomes an important area of exploration for post-secondary institution

Mobile Antibiotic Resistance Encoding Elements Promote Their Own Diversity

Integrating conjugative elements (ICEs) are a class of bacterial mobile genetic elements that disseminate via conjugation and then integrate into the host cell genome. The SXT/R391 family of ICEs consists of more than 30 different elements that all share the same integration site in the host chromosome but often encode distinct properties. These elements contribute to the spread of antibiotic resistance genes in several gram-negative bacteria including Vibrio cholerae, the agent of cholera. Here, using comparative analyses of the genomes of several SXT/R391 ICEs, we found evidence that the genomes of these elements have been shaped by inter–ICE recombination. We developed a high throughput semi-quantitative method to explore the genetic determinants involved in hybrid ICE formation. Recombinant ICE formation proved to be relatively frequent, and to depend on host (recA) and ICE (s065 and s066) loci, which can independently and potentially cooperatively mediate hybrid ICE formation. s065 and s066, which are found in all SXT/R391 ICEs, are orthologues of the bacteriophage λ Red recombination genes bet and exo, and the s065/s066 recombination system is the first Red-like recombination pathway to be described in a conjugative element. Neither ICE excision nor conjugative transfer proved to be essential for generation of hybrid ICEs. Instead conjugation facilitates the segregation of hybrids and could provide a means to select for functional recombinant ICEs containing novel combinations of genes conferring resistance to antibiotics. Thus, ICEs promote their own diversity and can yield novel mobile elements capable of disseminating new combinations of antibiotic resistance genes

The Influence Of Coaching On Employee Perceptions Of Supervisor Effectiveness And Organizational Policies

This study investigates the effects of the use of coaching as a management style on supervisor effectiveness and key employee-related organizational policies.  Specifically, we examine the direct effects of coaching on employee perceived supervisor effectiveness and organizational work-family balance support, as well as the impact of supervisory effectiveness on employee perceived effectiveness of organizational rewards programs.  Ordinal regression was used to test the hypotheses, and data from 134 undergraduate and graduate business students enrolled in a Northeast university who indicated that they were currently employed on a full-time basis support these relationships.  Results show that the degree to which employees view their supervisor as acting as a coach positively influences perceived supervisor effectiveness and organizational work-family balance support.  Additionally, results support the notion that organizational work-family balance support also leads to perceived supervisor effectiveness which, in turn, positively influences employee perception regarding the effectiveness of organizational rewards programs

Bacterial Programmed Cell Death and Multicellular Behavior in Bacteria

Traditionally, programmed cell death (PCD) is associated with eukaryotic multicellular organisms. However, recently, PCD systems have also been observed in bacteria. Here we review recent research on two kinds of genetic programs that promote bacterial cell death. The first is mediated by mazEF, a toxin–antitoxin module found in the chromosomes of many kinds of bacteria, and mainly studied in Escherichia coli. The second program is found in Bacillus subtilis, in which the skf and sdp operons mediate the death of a subpopulation of sporulating bacterial cells. We relate these two bacterial PCD systems to the ways in which bacterial populations resemble multicellular organisms