920 resultados para Ageing and work


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Following the recent trend in psychology towards a more integrative view of personality, the study attempted to establish the connections and underlying complexes of fundamental personality dispositions within two cohorts of Swiss adolescents in eighth and eleventh grade (N = 492, ages 13 to 19): Big-Five basic traits, big six vocational interests, work values, and generalized self-efficacy and externality of control beliefs. Five factors were identified which accounted for 60% of variance among the relations of the variables: (1) enterprisingconventional interests, (2) favorable personality dispositions, (3) social-artistic personality characteristics, (4) investigative-realistic interests, and (5) work value endorsement. Crosssectional findings indicate that particularly agreeableness and conscientiousness become closer related to interests and work values with increasing grade-level.

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Recent research suggests that some stressors (i.e. hindrance stressors) have mainly negative consequences, whereas others (i.e. challenge stressors) can simultaneously have positive and negative consequences (e.g., LePine et al., 2005). Although a number of studies have dealt with potential outcomes of challenge stressors, some criteria have received only limited attention (e.g., positive self-attitudes; cf. Widmer et al., 2012), and some have been neglected altogether (i.e., physical health outcomes). Furthermore, while sophisticated methods – such as meta-analyses (e.g., LePine et al., 2005), diary studies (Ohly & Fritz, 2010), and multi-source analyses (Wallace et al., 2009) – have been applied to the framework, there are no longitudinal studies. We report results from a longitudinal study containing three waves, with two time-lags of one month each (N = 393). We analyzed relationships between challenge stressors and work attitudes (e.g. job satisfaction), self attitudes (e.g. self-esteem), and health indicators (e.g. sleep quality) using cross-lagged SEM. We expected positive effects of challenge stressors to appear only when their negative variance is controlled (e.g. by including hindrance stressors as a suppressor variable; cf. Cavanaugh et al., 2000). As the positive aspects of challenge stressors relate to self-affirming experiences, we also expected positive effects to be especially strong for self attitudes. Regarding work attitudes, the only significant paths found were from work attitudes to challenge stressors over both time lags. Regarding health, there was a significant cross-sectional association at time 1, which was negative, as expected. Longitudinally, a positive path from challenge stressors to health for both time lags was found only when hindrances stressors were controlled, confirming the expected suppressor effect. Hindrance stressors had a negative effect on health. For self-attitudes, there was a positive cross-sectional association at time one. In addition, a positive effect on self attitudes was found longitudinally for both time lags, but only when hindrance stressors were controlled. Additional analyses showed that the positive longitudinal effect on health was mediated by self attitudes. Although the lack of associations with work attitudes was surprising, our results indicate that challenge stressors contain aspects that provide an opportunity to develop self-esteem through demanding work situations, thereby contributing to personal growth and thriving at the workplace. They also confirm the ambiguous nature of challenge stressors, as, with one exception, positive effects were found only when hindrance stressors were controlled (cf. Widmer et al., 2012). Finally, our results confirm the importance of self-related attitudes in the stress process.

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Motivation plays a key role in successful entry into working life. Based on a cross-sectional and a one-year longitudinal study, we used a person-centered approach to explore work-related motivation (i.e., autonomous goals, positive affect, and occupational self-efficacy) among 577 students in 8th grade (Study 1) and 949 adolescents in vocational training (Study 2). Based on latent profile analysis, in both studies we identified four groups that were characterized by different levels of overall motivation and one group characterized by low positive affect and mean levels in autonomous goals and self-efficacy. Profiles characterized by high levels of motivation showed the highest levels of positive work expectations and goal engagement and the lowest levels of negative work expectations in Study 1 and the highest levels of person-job fit, work engagement, and job satisfaction in Study 2. Moreover, latent difference score analysis showed that motivational profiles predicted changes in person-job fit and work engagement across one year but not in job satisfaction. The results imply that career counselors should be aware of characteristic motivational patterns of clients that may require specific counseling approaches.

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Research has shown that chance events affect careers but has not established the nature of their effects. Moreover, the relationship between chance and career decidedness is not well understood. The present study used a person-centered approach with latent profile analysis to examine 312 Swiss adolescents in their first year of vocational training. We identified five qualitatively differing profiles according to levels of perceived chance events and career decidedness: balanced scorers, undecided with mean chance, undecided with high chance, decided with chance, and decided without chance. The groups differed significantly in work motivation (i.e., occupational self-efficacy beliefs, perceived person-job fit, and work engagement). Decided adolescents reported more favorable work motivation regardless of their level of perceived chance events. The results imply that promoting decidedness remains a valuable goal in career counseling despite the occurrence of unpredicted events.

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European public sectors are particularly affected by the demographic challenge and an ageing and shrinking workforce. According to OECD statistics, over 30% of public employees of central government in 13 countries will leave during the next 15 years. Moreover, the public sector has as compared to the private sector to rely on a much older workforce, who will have to work longer in future. Against this background, European governments need to react and re-think major elements of current HR and organisational management in the public sector. Particularly the skills in age management should be improved in order to also maintain in future a highly productive, competent and efficient public sector and to ensure that public employees stay longer ‘employable’, ‘healthy’, ‘fit for the job’ and ‘up to the task’. The survey suggests some solutions by investing more in three priority areas in the field of HRM.

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Philippe de Schoutheete takes as his point of departure in this Commentary the assumption that institutional treaty change cannot be a priority, although he does not exclude that it may become possible and desirable at a later period of economic growth and greater self-confidence in public opinion. In a best-case scenario, he foresees that such a window of opportunity might open towards the end of the present legislature. But in the meantime, he advises concentrating attention on adapting the institutions to make them work better and work more effectively together.

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The economic crisis over the past years has challenged managers in many ways. In our longitudinal study during the global recession, we examine how perceived firm performance interacts with sources of supervisor support and stress to affect managers’ work-family conflict. First, we draw from Conservation of Resources theory to analyze how sources of supervisor support and stress relate to managers’ work-family conflict. Second, we explore how perceived firm performance modifies the relationships between these factors and work-family conflict. Our surveys of 182 managers before and during the crisis reveal that perceived firm performance significantly alters the effectiveness of sources of supervisor support in relieving work-family conflict. Additionally, perceived poor firm performance was found to intensify the negative effect of stressors on work-family conflict. Our results highlight the need to consider an organization’s perceived health when studying managers’ attitudes and career outcomes.

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Introduction Mild cognitive impairment (MCI) is a term used to describe a level of decline in cognition which is seen as an intermediate stage between normal ageing and dementia, and which many consider to be a prodromal stage of neurodegeneration that may become dementia. That is, it is perceived as a high risk level of cognitive change. The increasing burden of dementia in our society, but also our increasing understanding of its risk factors and potential interventions, require diligent management of MCI in order to find strategies that produce effective prevention of dementia. Aim To update knowledge regarding mild cognitive impairment, and to bring together and appraise evidence about the main features of clinical interest: definitions, prevalence and stability, risk factors, screening, and management and intervention. Methods Literature review and consensus of expert opinion. Results and conclusion MCI describes a level of impairment in which deteriorating cognitive functions still allow for reasonable independent living, including some compensatory strategies. While there is evidence for some early risk factors, there is still a need to more precisely delineate and distinguish early manifestations of frank dementia from cognitive impairment that is less likely to progress to dementia, and furthermore to develop improved prospective evidence for positive response to intervention. An important limitation derives from the scarcity of studies that take MCI as an endpoint. Strategies for effective management suffer from the same limitation, since most studies have focused on dementia. Behavioural changes may represent the most cost-effective approach.

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This study investigates the relationship between aggregate job satisfaction and organizational innovation. In a sample of manufacturing companies, data were gathered from 3717 employees in 28 UK manufacturing organizations about their job satisfaction and aggregated to the organizational level. Data on innovation in technology/processes were gathered from multiple respondents in the same organizations 24 months later. The results revealed that aggregate job satisfaction was a significant predictor of subsequent organizational innovation, even after controlling for prior organizational innovation and profitability. Moreover the data indicated that the relationship between aggregate job satisfaction and innovation in production technology/processes was moderated by two factors: job variety and a commitment to "single status". Unlike previous studies, we conceptualize job satisfaction at the aggregate rather than the individual level and examine innovation rather than creativity. We propose that where the majority of employees experience job satisfaction, they will endorse rather than resist innovation and work collaboratively to implement as well as to generate creative ideas.

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The aim of this thesis was to investigate the impact of changing values and attitudes toward work and the workplace in Britain, West Germany, France and Japan. A cross-national approach was adopted in order to gain a better understanding of differences and similarities in behaviour and to identify aspects specific to each society. Although the relationship between work and leisure has been thoroughly examined and there is a growing body of literature on changes in the values associated with these two phenomena, little research has been carried out into leisure at work. Studies of work time have tended to consider it as a homogeneous block, whereas recent research suggests that more attention should be devoted to unravelling the multiple uses of time at the workplace. The present study sought to review and analyse this new approach to the study of work time, and special attention is devoted to an examination of definitions of leisure, recreation, free time and work within the context of the workplace. The cross-cultural comparative approach gave rise to several problems due to the number of countries involved and the unusual combination of factors being investigated. The main difficulties were differences in the amount and quality of literature available, the non-comparability of existing data, definitions of concepts and socio-linguistic terms, and problems over access to organizations for fieldwork. Much of the literature generalizes about patterns of behaviour and few authors isolate factors specific to particular societies. In this thesis new empirical work is therefore used to ascertain the extent to which generalizations can be made from the literature and characteristics peculiar to each of the four countries identified. White-collar employees in large, broadly comparable companies were studied using identical questionnaires in the appropriate language. Respondents selected were men and women, aged between 20-65 years and either managers or non-managers. Patterns of leisure at work were found to be broadly similar in the national contexts, but with the Japanese and the West Germans experiencing the least leisure at work, and the British and the French perceiving the most. The general trend seems to be toward convergence of attitudes regarding leisure at work in the four countries. Explanations for variations in practice were sought within the wider societal contexts of each country.

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The aim of this thesis is to examine the experience of time of four professional occupational groups working in public sector organisations and the factors affecting this experience. The literature on time and work is examined to delineate the key parameters of research in this area. A broad organisation behaviour approach to the experience of time and work is developed in which individual, occupational, organisational and socio-political factors are inter-related. The experience of secondary school teachers, further education lecturers, general medical practitioners and hosoital consultants is then examined. Multiple methods of data collection are used: open-ended interviews, a questionnaire survey and the analysis of key documents relating to the institutional settings in which the four groups work. The research aims to develop our knowledge of working time by considering the dimensions of the experience of time at work, the contexts in wlhich this experience is generated and the constraints these contexts give rIse to. By developing our understanding of time as a key feature of work experience we also extend our knowledge of organisation behaviour in general. In conclusion a model of the factors relating the experience of time to the negotiation of time at work is presented.

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Summary: This paper focuses on the role of personality at different stages of people's working lives. We begin by reviewing the research in industrial, work, and organizational (IWO) psychology regarding the longitudinal and dynamic influences of personality as an independent variable at different career stages, structuring our review around a framework of people's working lives and careers over time. Next, we review recent studies in the personality and developmental psychology domain regarding the influence of changing life roles on personality. In this domain, personality also serves as a dependent variable. By blending these two domains, it becomes clear that the study of reciprocal effects of work and personality might open a new angle in IWO psychology's long-standing tradition of personality research. To this end, we outline various implications for conceptual development (e.g., trait stability) and empirical research (e.g., personality and work incongruence). Finally, we discuss some methodological and statistical considerations for research in this new research domain. In the end, our review should enrich the way that IWO psychologists understand personality at work, focusing away from its unidirectional predictivist influence on job performance toward a more complex longitudinal reciprocal interplay of personality and working life. © 2013 John Wiley & Sons, Ltd.

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Elevated free fatty acids (FFA) are a feature of ageing and a risk factor for metabolic disorders such as cardiovascular disease (CVD) and type-2 diabetes (T2D). Elevated FFA contribute to insulin resistance, production of inflammatory cytokines and expression of adhesion molecules on immune cells and endothelial cells, risk factors for CVD and T2D. Molecular mechanisms of FFA effects on monocyte function and how FFA phenotype is affected by healthy ageing remain poorly understood. This thesis evaluated the effects of the two major FFA in plasma, oleate and palmitate on monocyte viability, cell surface antigen expression, and inflammatory activation in THP-1 monocytes. Palmitate but not oleate increased cell surface expression of CD11b and CD36 after 24h, independent of mitochondrial superoxide, but dependent on de novo synthesis of ceramides. LPS-mediated cytokine production in THP-1 monocytes was enhanced and decreased following incubation with palmitate and oleate respectively. In a model of monocyte-macrophage differentiation, palmitate induced a pro-inflammatory macrophage phenotype which required de novo ceramide synthesis, whilst oleate reduced cytokine secretion, producing a macrophage with enhanced clearance apoptotic cells. Plasma fatty acid analysis in young and mid-life populations revealed age-related increases in both the SFA and MUFA classes, especially the medium and very long chain C14 and C24 fatty acids, which were accompanied by increases in the estimated activities of desaturase enzymes. Changes were independently correlated with increased PBMC CD11b, plasma TNF-a and insulin resistance. In conclusion, the pro-atherogenic phenotype, enhanced LPS responses in monocytes, and pro-inflammatory macrophage in the presence of palmitate but not oleate is reliant upon de novo ceramide synthesis. Age-related increases in inflammation, cell surface integrin expression are related to increases in both the MUFA and SFA fatty acids, which in part may be explained by altered de novo fatty acid synthesis.

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This study examined psychological mechanisms that underpin the relationships between perceived organizational family support (POFS) and a family-supportive supervisor (FSS) on employee work behaviors. Based on data from employed parents and their supervisors (N = 230) in 12 South Korean organizations, structural equation modeling results revealed three salient findings: (1) POFS and FSS are indirectly related to contextual performance through control over work time, (2) FSS is indirectly related to both contextual performance and work withdrawal through organization-based self-esteem (OBSE), and (3) control over work time is indirectly related to the two work outcomes through OBSE. The authors interpret these findings as indicating support for the focus on informal workplace family support and the need for research to examine the psychological resources they engender if we are to understand why these forms of support have their demonstrated outcomes. © The Author(s) 2012.

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A common feature of ageing is the alteration in tissue distribution and composition, with a shift in fat away from lower body and subcutaneous depots to visceral and ectopic sites. Redistribution of adipose tissue towards an ectopic site can have dramatic effects on metabolic function. In skeletal muscle, increased ectopic adiposity is linked to insulin resistance through lipid mediators such as ceramide or DAG, inhibiting the insulin receptor signalling pathway. Additionally, the risk of developing cardiovascular disease is increased with elevated visceral adipose distribution. In ageing, adipose tissue becomes dysfunctional, with the pathway of differentiation of preadipocytes to mature adipocytes becoming impaired; this results in dysfunctional adipocytes less able to store fat and subsequent fat redistribution to ectopic sites. Low grade systemic inflammation is commonly observed in ageing, and may drive the adipose tissue dysfunction, as proinflammatory cytokines are capable of inhibiting adipocyte differentiation. Beyond increased ectopic adiposity, the effect of impaired adipose tissue function is an elevation in systemic free fatty acids (FFA), a common feature of many metabolic disorders. Saturated fatty acids can be regarded as the most detrimental of FFA, being capable of inducing insulin resistance and inflammation through lipid mediators such as ceramide, which can increase risk of developing atherosclerosis. Elevated FFA, in particular saturated fatty acids, maybe a driving factor for both the increased insulin resistance, cardiovascular disease risk and inflammation in older adults.