Changes in mental well-being, blood pressure and total cholesterol levels during workplace reorganization: the impact of uncertainty

The aim of this study was to investigate the effects of uncertainty caused by large-scale workplace reorganization, on psychological well-being, blood pressure and total cholesterol levels. Employees (98 women and 86 men) were assessed four times, at approximately 6-monthly intervals, twice before and twice after reorganization. Self-reported psychological well-being was at its lowest level shortly prior to reorganization, as predicted. Greater self-reported uncertainty about one's own future occupational situation was associated with a bigger reduction in mental well-being before reorganization, as was role ambiguity after reorganization. Systolic blood pressure was elevated over initial levels just prior to reorganization, and shortly after reorganization, but at the final assessment was not significantly different from initial levels. A bigger increase in systolic blood pressure was seen in those reporting greater future job uncertainty before reorganization, and in those who started a new job or who reported greater role ambiguity after reorganization. Diastolic blood pressure was also significantly elevated over initial levels just before reorganization, but this effect became nonsignificant once changes in body mass index were statistically controlled. Total cholesterol also reached its highest level just prior to reorganization, but this effect was not significant. It is concluded that workplace reorganization caused significant increases in distress and in systolic blood pressure and that uncertainty contributed to these effects.     

Testing the 3-factor model of occupational stress: the impact of demands, control and social support on a mail sorting task

This study tests a 3-factor model of occupational stress, which predicts that job demands, job control and social support influence levels of strain. In a laboratory simulation of mail sorting, task demands, control and social supports were manipulated systematically. Pre- and post-task measures of self reported stress and arousal were compared across groups. Performance was measured continuously during the computer task and all 120 participants reported their perceived performance afterwards. Stress was found to be higher and perceived performance was lower in conditions of high demand; this pattern was also observed in conditions of low social support. Contrary to the hypotheses put forward in this paper, task control did not affect stress and the manipulations did not interact to produce elevated stress. However, task performance was poorer in conditions of high demand and in conditions of low control, and there was a significant interaction between demand and control for performance. Work preference measures indicated that the level of fit between ideal and actual social support influenced stress and perceived performance.     

Back to basics: Re-examination of Demand-Control Theory of occupational stress

The Demand-Control model of occupational stress posits an interaction between job demands and job control predicting psychological strain, but previous research has found such an interaction only rarely or inconsistently. Such research, however, has often failed to measure either demands or strain faithfully to the model's constructs, or has simply failed to test for a statistical interaction. The present study corrected these shortcomings by going back to basics. Using a sample of 115 employees in a manufacturing company, it operationalized the variables more consistently with their original conceptualizations. However, when the hypothesized Demand-Control interaction was then tested, it still failed. Outcomes other than psychological strain (e.g. job dissatisfaction) were related negatively rather than positively to demands. This highlights the difference between psychological strain and dissatisfaction and casts doubt on models positing dissatisfaction as an intervening variable between stressors and strains.     

关于弹塑性应力应变集中关系的探讨

本文分析了Neuber关系的推导过程,描出Neuber关系,即使对Ⅲ型加载问题也不是解析解。本文根据弹塑性断裂力学理论,对幂强化材料,导出了Ⅲ型加载裂纹问题弹塑性应力应变集中关系。同时分折了Ⅰ型缺口弹塑性应力应变集中关系。     

General Model for Reliability-Based Engineering Design

This article applies general engineering rules for describing the reliability of devices working under variable stresses. The approach is based on imposing completeness and physicality. Completeness refers to the model's capability for studying as many stated conditions as possible, and physicality refers to the model's capability for incorporating explanatory variables specified and related each other by the physical laws. The proposed reliability model has as many explanatory variables as necessary but only three unknown parameters, and hence, it allows the engineer to collect reliability data from different tests campaigns, and to extrapolate reliability results towards other operational and design points.     

Perceived stress among nonmetropolitan Utah residents

This article examines relationships between perceived stress and variables such as life events, differential economic satisfaction, health problems, and sociodemographic characteristics among respondents in three nonmetropolitan areas in Utah. The three most predictive factors related to perceived stress are economic satisfaction, life events experienced, and religion. The analysis shows an inverse partial relationship between perceived stress scores and economic satisfaction, and a positive partial relationship between the number of life events and perceived stress. Non-Mormons report higher levels of stress than Mormons. A positive but weak relationship is observed between stress and household size. Weak inverse relationships are observed between stress and a measure of household unemployment, income, and respondent's sex.Richard S. Krannich received his Ph.D. from Pennsylvania State University. He is an Associate Professor of Sociology, and Director of the Institute for Social Science Research on Natural Resources, Utah State University, Logan, UT84322-0730. His research interests include rural development processes, community change, and social responses to natural resource developments.Pamela J. Riley received her Ph.D. from Washington State University. She is currently an Associate Professor, Department of Sociology, Utah State University, Logan, UT 84322-0730. Research interests include rural family stress, the impacts of tourism on developing countries, and social aspects of on-farm water management.Ann Leffler is an Associate Professor of Sociology and Director of the Liberal Arts and Sciences Program, Utah State University, Logan, UT 84322-0730. Research interests include nonmetropolitan family stress. She received her Ph.D. from the University of California at Berkeley.     

Decision latitude, job demands, and employee well-being

Karasek (1979) drew attention to the possibilities that job characteristics may be non-linearly associated with employee well-being, and that they may combine interactively in relation to well-being. This paper examines those issues, and finds that both linear and non-linear components are present in relationships between job features and well-being. However, there is no evidence for a synergistic interaction between decision latitude and job demands. Those job features are differentially predictive of two aspects of well-being: job-related depression-enthusiasm and anxiety-contentment.     

Psychophysiological reactions during the first year of a foreign assignment: Results of a controlled longitudinal study

Previous studies reveal that employees are exposed to several potential stressors during foreign assignments. This prospective multidisciplinary study followed managers (expatriate group) before and during their first year of an international work assignment. Concurrently, a matched reference group that did not relocate was observed. The secretion of the stress-sensitive hormone prolactin increased in the expatriate group during the first year abroad, compared to the reference group. Selfesteem, family relations, language skills, decreased internal locus of control and job promotion explained 32% of the variance in serum prolactin levels. Lower self-esteem and sense of coherence was related to increased serum prolactin. Increased working hours were associated with decreased work satisfaction. Job promotion was not related to work satisfaction. Mental well-being decreased in the expatriate group, compared to the reference group. Individual factors such as a strong sense of coherence and social provision attenuated decreases in mental well-being. A significant increase in cigarette and alcohol consumption was found in the expatriate group during the first year abroad. This study indicates that there are important psychosocial determinants influencing psychophysiological response patterns in expatriates. The present results put into question the generalizability of the 'culture shock' syndrome. The results have practical implications for guiding expatriates on time-limited assignments.     

Stress and coping of adults and young adults in economically uncertain rural areas

This paper discusses the degree and type of stress experienced by adults and young adults, coping strategies used, and their family, financial, and community satisfaction in economically distressed rural counties. Data were analyzed from questionnaires completed by 447 adults and 118 young adults. Results indicate greater perceived stress, use of some less effective coping strategies, and less satisfaction among young adults. Both groups indicate similar numbers of stressful events and a generally positive perception of community social services.Dorothy Z. Price received her Ph.D. from Michigan State University. She is a Professor, Department of Child & Family Studies, Washington State University, Pullman, WA 99164-2010. Research interests include decision-making and consumer behavior.Lonnie J. Dunlap, M.A. is a Graduate Research Assistant, Interdisciplinary Ph.D. Program, Department of Child & Family Studies, Washington State University, Pullman, WA 99164-2010. Research interests include work and family interactions and career development.