University of Memphis

About: University of Memphis is a education organization based out in Memphis, Tennessee, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 7710 authors who have published 20082 publications receiving 611618 citations. The organization is also known as: U of M.

The Impact of Science Knowledge, Reading Skill, and Reading Strategy Knowledge on More Traditional “High-Stakes” Measures of High School Students’ Science Achievement

Abstract: This study examined how well cognitive abilities predict high school students’ science achievement as measured by traditional content-based tests. Students (n = 1,651) from four high schools in three states were assessed on their science knowledge, reading skill, and reading strategy knowledge. The dependent variable, content-based science achievement, was measured in terms of students’ comprehension of a science passage, science course grade, and state science test scores. The cognitive variables reliably predicted all three measures of science achievement, and there were also significant gender differences. Reading skill helped the learner compensate for deficits in science knowledge for most measures of achievement and had a larger effect on achievement scores for higher knowledge than lower knowledge students. Implications for pedagogy and science assessment are discussed.

Anaerobic exercise and oxidative stress: a review.

Abstract: Oxidative stress and subsequent damage to cellular proteins, lipids, and nucleic acids, as well as changes to the glutathione system, are well documented in response to aerobic exercise. However, f...

Hierarchical filters determine community assembly of urban species pools

Abstract: The majority of humanity now lives in cities or towns, with this proportion expected to continue increasing for the foreseeable future. As novel ecosystems, urban areas offer an ideal opportunity to examine multi-scalar processes involved in community assembly as well as the role of human activities in modulating environmental drivers of biodiversity. Although ecologists have made great strides in recent decades at documenting ecological relationships in urban areas, much remains unknown, and we still need to identify the major ecological factors, aside from habitat loss, behind the persistence or extinction of species and guilds of species in cities. Given this paucity of knowledge, there is an immediate need to facilitate collaborative, interdisciplinary research on the patterns and drivers of biodiversity in cities at multiple spatial scales. In this review, we introduce a new conceptual framework for understanding the filtering processes that mold diversity of urban floras and faunas. We hypothesize that the following hierarchical series of filters influence species distributions in cities: (1) regional climatic and biogeographical factors; (2) human facilitation; (3) urban form and development history; (4) socioeconomic and cultural factors; and (5) species interactions. In addition to these filters, life history and functional traits of species are important in determining community assembly and act at multiple spatial scales. Using these filters as a conceptual framework can help frame future research needed to elucidate processes of community assembly in urban areas. Understanding how humans influence community structure and processes will aid in the management, design, and planning of our cities to best support biodiversity.

Why do employees worry about their jobs? A meta-analytic review of predictors of job insecurity.

Abstract: We used psychological contract theory as a framework to meta-analytically review subjective and objective predictors of employees' perceived job insecurity. Seventy-six samples from 68 studies were included in our review. Results revealed that lower levels of job insecurity are associated with having an internal locus of control, lower amounts of role ambiguity and role conflict, greater amounts of organizational communication, less organizational change, younger employees, and white-collar and permanent work. Moderator analyses further revealed that relations between job insecurity and age, gender, education, and formal contracts are moderated by unemployment rates, countries of origin, and type of job insecurity measure. We discuss theoretical and practical implications for psychological contract theory and occupational health, and offer directions for future research.

A social constructionist account of grief: loss and the narration of meaning.

Abstract: In contrast to dominant Western conceptions of bereavement in largely intrapsychic terms, the authors argue that grief or mourning is not primarily an interior process, but rather one that is intricately social, as the bereaved commonly seek meaning in this unsought transition in not only personal and familial, but also broader community and even cultural spheres. The authors therefore advocate a social constructionist model of grieving in which the narrative processes by which meanings are found, appropriated, or assembled occur at least as fully between people as within them. In this view, mourning is a situated interpretive and communicative activity charged with establishing the meaning of the deceased's life and death, as well as the postdeath status of the bereaved within the broader community concerned with the loss. They describe this multilevel phenomenon drawing first on psychological research on individual self-narratives that organize life experience into plot structures that display some level of consistency over time, whose viability is then negotiated in the intimate interpersonal domain of family and close associates. Second, they explore public communication, including eulogies, grief accounts in popular literature, and elegies. All of these discourses construct the identity of the deceased as he or she was, and as she or he is now in the individual and communal continuing bonds with the deceased. Finally, they consider different cultural contexts to see how expressions of grief are policed to ensure their coherence with the prevailing social and political order. That is, the meanings people find through the situated interpretive and communicative activity that is grieving must either be congruent with the meanings that undergird the larger context or represent an active form of resistance against them.