Minor Illnesses,Temperament, and Toddler Social Functioning

Research Findings: Minor illnesses, such as upper respiratory infections, stomachaches, and fevers, have been associated with children's decreased activity and increased irritability. This multi-method investigation of 110 day care–attending children examined whether experience with recurrent, minor illnesses and negative emotionality worked together to predict young children's social functioning. Minor illness experience was assessed via weekly health screenings conducted by nurses. Toddlers' negative emotionality and social behavior were assessed using mothers' and fathers' reports. The two dimensions of negative emotionality and minor illness experience operated in different ways to predict children's functioning. Toddlers rated as more temperamentally angry displayed less social competence, especially when they also experienced high proportions of minor illness. Temperamentally fearful children exhibited more externalizing problems when they experienced a higher frequency of illness, whereas fearfulness was not associated with externalizing problems for children who were not frequently ill. Practice or Policy: Children's frequent experience with minor illnesses combined with negative emotionality appears to place toddlers at a heightened risk for exhibiting behavior problems. These findings have implications for child and family well-being as well as interactions with child care providers and peers within child care settings. Interventions could be developed to target “at risk” children.     

Teaching gender studies via open and distance learning in South Africa

The University of South Africa (UNISA) has recently redesigned its honors degree in Gender Studies. The course design team members have been mindful of three key factors while redesigning this degree. First, we are aligning our course design with the demands of open and distance learning (ODL) and UNISA’s institutional move to online delivery of all teaching materials. Second, we are guided by the theoretical principles of feminist pedagogy. Third, we are committed to producing graduates who can take on the challenge of being gender change agents in a country with an escalating rate of gender-based violence. This article charts the development of the Gender Studies curricular initiative at UNISA with reference to the pedagogical insights provided by feminist scholarship on teaching, learning, and technology. We hope that our experience will provide insight into the parameters and process of creating an effective program in Gender Studies within an ODL context.     

The effects of anxiety and strategic planning on visual search behaviour

The past decade has witnessed increased interest in the visual search behaviour of athletes. Little is known, however, about the relationship between anxiety and eye movements in sport performers or about the extent to which athletes' planned and actual visual search strategies correspond. To address these issues, we conducted two studies. In Study 1, eight expert female gymnasts were presented with three digital slides of a model performing a skill that is known to be anxiety-provoking in this sport - namely, the 'back flip' on the beam. By varying the height of the beam and the presence or absence of safety mats, the slides differed in the amount of anxiety that they elicited vicariously in the viewer. In the study, the gymnasts were asked to imagine themselves in the position of the depicted model and to describe the anxiety that they felt. As they viewed the slides, their eye movements were recorded. As predicted, anxiety was associated with an increase in the number of fixations to peripheral areas. In addition, the more 'threatening' slides elicited significantly more fixations than the less feared images. In Study 2, the plans of 15 equestrian performers (5 expert, 5 intermediate and 5 novice) were elicited as they engaged in a virtual 'walk' around a computerized show-jumping course. Contrary to expectations, the congruence between intended and actual search behaviour was not significantly greater for expert riders than for the less skilled groups. Also, the fact that the top riders allocated more fixations to slides than the less skilled performers challenged the prediction that expertise would be associated with economy of visual search. Finally, as expected, the expert riders were significantly less dependent on the overall 'course plan' than the intermediate and novice equestrian performers when inspecting the fences.     

Access to Online Local Government Public Records: The Privacy Paradox

Local governments are required to provide open access to their records as a matter of law; however, there is growing public concern about the security of private information found in these files. Before the advent of the Internet, individuals enjoyed a level of practical obscurity, as viewing public records required the time and effort of a visit to the records' physical location and prevented easy access to details of individual files. However, the introduction of the Web and the availability of digital documents have caused an unavoidable conflict. On the one hand, the government is required to provide the public with a transparent view of its activities by offering open access to its records, and on the other hand, local governments need to secure their citizens’ right to privacy. Especially since September 11, 2001, and the problems associated with identity theft, finding the right balance between accessibility and privacy is not a simple task. The purpose of this article is to report on the accessibility and extent of personal information found within online local government records and to understand how local governments are managing the dichotomy between providing open access to their records with maintaining the privacy rights of the public.     

Microfluidic platform for the study of intercellular communication via soluble factor-cell and cell-cell paracrine signaling

Diffusion of autocrine and paracrine signaling molecules allows cells to communicate in the absence of physical contact. This chemical-based, long-range communication serves crucial roles in tissue function, activation of the immune system, and other physiological functions. Despite its importance, few in vitro methods to study cell-cell signaling through paracrine factors are available today. Here, we report the design and validation of a microfluidic platform that enables (i) soluble molecule-cell and/or (ii) cell-cell paracrine signaling. In the microfluidic platform, multiple cell populations can be introduced into parallel channels. The channels are separated by arrays of posts allowing diffusion of paracrine molecules between cell populations. A computational analysis was performed to aid design of the microfluidic platform. Specifically, it revealed that channel spacing affects both spatial and temporal distribution of signaling molecules, while the initial concentration of the signaling molecule mainly affects the concentration of the signaling molecules excreted by the cells. To validate the microfluidic platform, a model system composed of the signaling molecule lipopolysaccharide, mouse macrophages, and engineered human embryonic kidney cells was introduced into the platform. Upon diffusion from the first channel to the second channel, lipopolysaccharide activates the macrophages which begin to produce TNF-α. The TNF-α diffuses from the second channel to the third channel to stimulate the kidney cells, which express green fluorescent protein (GFP) in response. By increasing the initial lipopolysaccharide concentration an increase in fluorescent response was recorded, demonstrating the ability to quantify intercellular communication between 3D cellular constructs using the microfluidic platform reported here. Overall, these studies provide a detailed analysis on how concentration of the initial signaling molecules, spatiotemporal dynamics, and inter-channel spacing affect intercellular communication.     

Factors for Personal Counseling Among Counseling Trainees

The present study explored the use of counseling among counselor trainees and the characteristics of consumers and nonconsumers. Approximately 61% of those surveyed (n = 85) reported that they had received counseling, with the majority being mental health counseling trainees. Nonconsumers (n = 54) indicated that they coped with problems in other ways but would consider counseling if they experienced trauma.     

A low-cost 3D printed microfluidic bioreactor and imaging chamber for live-organoid imaging

Organoids are biological systems grown in vitro and are observed to self-organize into 3D cellular tissues of specific organs. Brain organoids have emerged as valuable models for the study of human brain development in health and disease. Researchers are now in need of improved culturing and imaging tools to capture the in vitro dynamics of development processes in the brain. Here, we describe the design of a microfluidic chip and bioreactor, to enable in situ tracking and imaging of brain organoids on-chip. The low-cost 3D printed microfluidic bioreactor supports organoid growth and provides an optimal imaging chamber for live-organoid imaging, with drug delivery support. This fully isolated design of a live-cell imaging and culturing platform enables long-term live-imaging of the intact live brain organoids as it grows. We can thus analyze their self-organization in a controlled environment with high temporal and spatial resolution.     

Preschool and Children's Outcomes in Elementary School: Have Patterns Changed Nationwide Between 1998 and 2010?

This study employs data from both kindergarten cohorts of the Early Childhood Longitudinal Study (n ~ 12,450 in 1998; n ~ 11,000 in 2010) to assess whether associations between preschool participation and children's academic and behavioral outcomes—both at school entry (M_age = 5.6 years in both cohorts) and through third grade—have changed over time. Findings are strikingly similar across these two, nationally representative, U.S. cohorts: preschool is positively associated with academic outcomes and negatively associated with behavioral outcomes both at school entry and as children progress through school. Heterogeneity is documented with respect to child and preschool characteristics. However, there is no evidence that associations between preschool and medium-term child outcomes differ by elementary school characteristics.