344 research outputs found
Ground and space flight experiments of the effects of light, sound and/or temperature on animals
Papers on the following topics are presented: (1) rat long term habitability and breeding under low light intensity (5 lux); (2) effects of low light intensity on the rat circadian system; (3) effects of sound/noise on the circadian system of rats; (4) temperature related problems involving the animal enclosure modules (AEM) lighting system; and (5) NASA AEM filter test 92/93 (Rats)
The early childhood generalized trust belief scale
The study was designed to develop and evaluate the Early Childhood Generalized Trust Belief Scale (ECGTBS) as a method of assessing 5-to-8-year-olds’ generalized trust. Two hundred and eleven (103 male and 108 female) children (mean age 6 years and 2 months at Time 1) completed the ECGTBS twice over a year. A subsample of participants completed the ECGTBS after two weeks to assess the scale’s test-retest reliability. Exploratory and confirmatory factor analyses confirmed that the ECGTBS assessed the expected three factors: reliability, emotional trust, and honesty with item-pairs loading most strongly on their corresponding factor. However, the ECGTBS demonstrated low to modest internal consistency and test-retest reliability which indicates a need for further development of this instrument. As evidence for the convergent validity of the ECGTBS, the reliability and emotional trust items were associated with the children’s trust in classmates at Time 2. Concurrent asymmetric quadratic relationships indicated the importance of midrange generalized trust. Specifically, children with very high generalized trust experienced greater loneliness and children with very low generalized trust had fewer friendships than children with midrange trust
Young children's interpersonal trust consistency as a predictor of future school adjustment
Young children’s interpersonal trust consistency was examined as a predictor of future school adjustment. One hundred and ninety two (95 male and 97 female, M age = 6 years 2 months, SD age = 6 months) children from school years 1 and 2 in the United Kingdom were tested twice over one-year. Children completed measures of peer trust and school adjustment and teachers completed the Short-Form Teacher Rating Scale of School Adjustment. Longitudinal quadratic relationships emerged between consistency of children’s peer trust beliefs and peer-reported trustworthiness and school adjustment and these varied according to social group, facet of trust, and indictor of school adjustment. The findings support the conclusion that interpersonal trust consistency, especially for secret-keeping, predicts aspects of young children’s school adjustment
Modelling Everyday Understandings of Mortality: A Qualitative Enquiry
With few exceptions, much of the literature on mortality awareness (MA; the realization of one’s own and other’s mortality), though based on quantitative research, is focused on its negative effects and processes associated with fearing its occurrence. However, recent studies have demonstrated that MA is multifaceted and can be associated with positive processes and outcomes. Here, everyday understandings of MA were investigated using grounded theory. Ten participants engaged in one-off semistructured interviews about their everyday experiences of MA. Grounded theory analysis revealed four main themes: (a) Moments of MA, (b) Functionality of MA, (c) Coping strategies for MA, and (d) Inability to cope with MA. Each of these themes is composed of two to five subthemes. The results supported the notion that MA is experienced in a multidimensional manner, which appears to align with elements of the Multidimensional Mortality Awareness Measure and Model. Furthermore, positive and/or negative outcomes appeared to depend on the function attributed to MA by the individual. Therefore, the ability to attribute such function to MA appears to be important in our understanding of this key existential issue
Political parties and democratic consolidation in post-communist societies
Political parties have a central role to play in democratic consolidation, yet we know comparatively little about how effectively they represent social cleavages in newly emerging democracies. Using the Lipset–Rokkan framework, this article examines the role of parties in articulating social cleavages in 14 established and 6 emerging democracies using the Comparative Study of Electoral Systems datasets. The results show that the social cleavages in the emerging democracies are similar to those of the established democracies, with religion and class predominating. Parties appear to be less effective in representing social cleavages in the emerging than in the established democracies
Iron-Responsive Olfactory Uptake of Manganese Improves Motor Function Deficits Associated with Iron Deficiency
Iron-responsive manganese uptake is increased in iron-deficient rats, suggesting that toxicity related to manganese exposure could be modified by iron status. To explore possible interactions, the distribution of intranasally-instilled manganese in control and iron-deficient rat brain was characterized by quantitative image analysis using T1-weighted magnetic resonance imaging (MRI). Manganese accumulation in the brain of iron-deficient rats was doubled after intranasal administration of MnCl2 for 1- or 3-week. Enhanced manganese level was observed in specific brain regions of iron-deficient rats, including the striatum, hippocampus, and prefrontal cortex. Iron-deficient rats spent reduced time on a standard accelerating rotarod bar before falling and with lower peak speed compared to controls; unexpectedly, these measures of motor function significantly improved in iron-deficient rats intranasally-instilled with MnCl2. Although tissue dopamine concentrations were similar in the striatum, dopamine transporter (DAT) and dopamine receptor D1 (D1R) levels were reduced and dopamine receptor D2 (D2R) levels were increased in manganese-instilled rats, suggesting that manganese-induced changes in post-synaptic dopaminergic signaling contribute to the compensatory effect. Enhanced olfactory manganese uptake during iron deficiency appears to be a programmed “rescue response” with beneficial influence on motor impairment due to low iron status
An Exploration of the Experiences of Elite Youth Footballers: The Impact of Organisational Culture
The present study explored how the organisational cultural experiences of elite youth footballers shaped their identity development and behaviour. The first author occupied the position of sport psychology practitioner-researcher within one professional football club over a 3-year duration. Traditional ethnographic research methods were employed, including; observations, field notes, reflections, and informal interviews. A Cultural Sport Psychology (CSP) perspective on identity as a social construction, and research on the cultural characteristics of professional football were used as frameworks to make sense of the data. Despite the introduction of the Elite Player Performance Plan (EPPP) in 2012, the traditional masculine culture of professional football dominated the studied club. Creative non-fiction vignettes revealed that youth players were encouraged to develop their self-stories focused on a single-minded dedication to professional football. The limited identity-related resources offered at both club, and cultural level is detrimental for players in terms of their well-being, and long term psychological development. From the results of this study, we suggest that future sports psychology practice within professional football may best be delivered at an organisational level. However, in order for a sport psychologist to be effective in this role they must develop an understanding of the sub-cultural features and characteristics of the organisation. In line with this, there would be great value in introducing a focus on organisational culture within sport psychology professional training and education routes
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