An examination of the mechanisms underlying the effects of physical activity on brain and cognition

Physical activity positively influences brain health and cognitive functioning in older adults. Several physiological and psychological mechanisms have been identified to underlie such a relationship. Cardiovascular fitness is accompanied with changes in mechanisms such as cerebral blood flow, neurotrophic factors, neurotransmitter systems and neural architecture that have themselves been associated with cognitive performance. Factors associated with exercise such as arousal, mood and self-perception of competence seem also to influence cognitive performance. Other explanation for the benefits of exercise in cognition, results from the fact that the performance of motor skills involve an important cognitive component (e.g., executive functions and information processing speed). Evidence of brain plasticity and behavior has been provided from studies where animals are exposed to enriched or complex environments. Exposure to such paradigms in which physical activity plays an important role has been found to influence various aspects of brain function and structure. Studies using neuroimaging techniques have established a link between the acquisition of different motor skills and the occurrence of neuroplasticity in human adults. This literature review indicates that the type of exercise and its specific perceptual and cognitive characteristics may influence cognitive performance. However, most of the research has been focused on self-paced movements or automatized skills and few intervention studies have examined the results of merging exercise and cognitive training in a single program. An important scientific challenge for the coming years is to design exercise programs capable of mobilizing several type of mechanisms underlying the effects of physical activity on brain and cognition.     

Immigrant Settlement Work in Canada: Limits and Possibilities for Professionalization

Cet article dépeint l’émergence du travail d’établissement auprès des immigrants au Canada et explore les perspectives d'avenir de celui‐ci en tant que profession. À l'heure actuelle, le travail d'établissement comprend trois formes de pratique : (1) un travail aux contours flous; (2) une spécialité du travail social; et (3) une profession en émergence. Cet article soutient que le travail d'établissement aura probablement un avenir professionnel. Cependant, la question de savoir s'il devient une profession indépendante dépend en grande partie du régime de financement du secteur des services d'établissement. Si le régime de financement fédéral et à court terme continue d'exister, le travail d'établissement cherchera encore sa définition au sein du domaine général du travail de service social. S'il émerge un régime de financement provincial et à long terme, les perspectives d'un travail d'établissement professionnel et indépendant s'amélioreront. This paper portrays the emergence of Canadian settlement work with immigrants and explores its prospects as an occupation. Currently, settlement work includes three forms of practice: (1) a loose occupation; (2) a specialty of social work; and (3) an emerging profession. The paper argues that settlement work is likely to have a professional future. However, whether or not it will become an independent profession depends largely on the funding regime of the settlement service sector. If the existing federal and short‐term funding regime continues, settlement work will still be trying to define itself in the broader field of social service work. If a provincial and long‐term funding regime emerges, prospects for an independent professional settlement work will improve.     

Prevalence of Sexual Abuse in Childhood: Some Critical Methodological Reflections

This article attempts to analyze the prevalence rates of sexual abuse in childhood reported in comparative empirical studies, giving an overview of a selection of representative studies reporting high rates of abuse and comparing it to an overview of studies reporting lower rates. Extremely discrepant rates of childhood sexual abuse are reported in a number of empirical studies conducted in this field over the past 26 years, particularly those looking beyond prevalence to study the links between this type of trauma and future motherhood. To shed light on the disparities in the reported prevalence rates, the article reviews the principal methodological biases that have contaminated the findings. The authors then offer several suggestions for improvement that might be implemented in future studies.     

Colonialism at the margins: politics of difference in Europe as seen through two Icelandic crises

Scholars have for some time emphasised destabilising the boundaries between colonised and colonisers, in addition to calling for more nuanced analyses of colonialism. I focus here on the politics of difference on a global scale and how the internal logic dividing the world into ‘us’ and ‘other’ is still significant, using two cases revolving around an Icelandic struggle with ‘otherness’ at different times in history: one in 1905 and the other in 2008. I claim that the analysis of those at the margins of the dualistic divide of colonised and coloniser clearly brings out the oppositions at play within historical and contemporary global relationships of power and how participation in colonial ideologies involved multiple politics of identity and selfhood within Europe. Both cases show Icelandic anxieties about being classified with the ‘wrong’ people and their attempt to situate themselves within the ‘civilised’ part of the world.     

The impact of labor shortage on the employee commitment

ABSTRACT

The purpose of this article is to demonstrate the impact of the shortage of labor on individuals’ workplace attitudes, strangely their commitment. It is beneficial for organizations to develop their management strategies in view of employees’ loyalty attitudes. As a conceptual paper, the article contains a theoretical deduction. The characteristics of the labor market (macro level), the organizational needs and responses (meso level), and the set of the employees’ commitment (micro level) are linked to a theoretical process. According to our results, the average levels of the different dimensions of employee commitment will be changed in the future. The levels of continuance commitment and professional commitment will be higher, while the levels of deliberate commitment and affective commitment will be lower in the employee commitment profiles. By increasing continuance commitment and professional commitment, the toolkit of the HR strategy needs to be transformed to make it more relevant external motivation tools and training-development solutions. Meanwhile, it is important to note that the interactions among the employees will be less frequent and they will have less affection for their workplace. Labor shortage transforms individuals’ workplace attitudes. Understanding of employees’ decisions to maintain their organizational membership is supported by the relationships found in this research.     

Internationally Adopted Children After Arrival: Temperament,Behavior Problems,and Age at Adoption as Predictors of Early Motor and Communication Competence

The temperament dimensions activity, emotionality, and shyness, together with behavior problems, gender, country of birth, and age at adoption, were explored in relation to early motor and communication competence among internationally adopted children in Norway (N = 106, gender: 55 girls and 51 boys, age at adoption: M = 9.99 months, SD = 4.29 months). Based on reports from adoptive mothers, regression analysis including all the variables showed that 56% of the variance in motor competence and 64% in communication competence were explained. Age at adoption explained most of the variance in both areas, while increased level of activity showed a significant correlation with improved motor competence.     

Communicative Openness in Adoption,Knowledge of Culture of Origin,and Adoption Identity in Adolescents Adopted From Romania

Eighty adolescents (39 male, mean age = 15.74 years) adopted from Romanian institutions in early childhood rated their own and their adoptive parents’ communicative openness, their knowledge of Romanian culture, and positive and negative feelings concerning birth parents, being placed for adoption, and being adopted. Adolescents were moderately comfortable talking about their adoptions but perceived their parents to be very comfortable. Nearly 40% reported no familiarity with Romanian culture. Youth with more familiarity with Romanian culture were more communicatively open and had more positive adoption identities. Greater communicative openness was also associated with more positive adoption identities. Gender and age at adoption differences are reported.     

Assembling life history narratives from quantitative longitudinal panel data: What’s the story for families using social work?

Abstract

Embedded within quantitative longitudinal panel or cohort studies is narrative potential that is arguably untapped but might enrich our understanding of individual and social lives across time. This paper discusses a methodology to assemble the life history narratives of families using social work by drawing on quantitative data from the British Household Panel Survey. It explores whether this person-centred approach helps us to understand the counter-intuitive results of a parallel multivariate analyses, which suggest that families using social work fare worse than similar others over time. Our findings are tentative, due to the experimental use of this narrative method and the limits of social work information in the data-set. Nonetheless, the life histories presented bring to light complexities, diversity and the non-linear pathways between families’ needs, support and outcomes that the aggregates obscure. We conclude that reconstructing families’ lives in this way, especially in the absence of complementary longitudinal qualitative data, affords the wider opportunity to interrogate and better understand the findings of quantitative longitudinal studies.     

Exploring rigour in autoethnographic research

Abstract

The changing face of qualitative research has opened up discourses on the validity and rigour of research processes and products. A current debate is whether the criteria traditionally used to judge the rigour of quantitative research are appropriate to assess the academic integrity of qualitative research including autoethnography. The purpose of this article is to appraise views on the academic rigour, validity and scientific accountability of research in general and autoethnographic research in particular. The researcher reports on issues of rigour in conducting autoethnographic research from her own experience and that of published autoethnographic researchers. The issue of relevant appraisal criteria against which the research integrity and rigour of autoethnographic studies can be assessed is investigated. It is concluded that the academic rigour of autoethnographic studies should be established to enhance its credibility and value and that the criteria used need to be judiciously determined and applied.