Theories of stress

THEORIES OF STRESS The take aim adroitness model The motivation readiness model proposed by Karasek (79) focuses on the demands of the working environment, simply is concerned with how job hold back or discretion can moderate the effects of those demands on health military position ( Jones & Fletcher, 96). Karasek is particularly concerned with how demand/discretion affects the cardiovascular system. The mite is that a situation of high demand will yard an increase in blood epinephrine levels, with the subsequent changes in blood pressure and blood lipoid levels. It as intumesce appears that low discretion or control is associated with change order levels of the stress hormone cortiisol. Therefore, the worst combination for health is when the demands atomic number 18 high in a condition of low controllability. dramatic play control has similarly a featured as a major dimension of other models. Despite popular predication there has been mixed evidence in support of the interactive effects of control and discretion. In a study by Warr et al (90) in their study of 25 year visual modality up, reported increased of heart disease with reduced control, still no association with either demand and heart disease, or an interaction between demand and control.

Karasek himself has subsequently emphasised the grandeur of control alone, especi onlyy in white collar workers. In a meta analysis study, showed the importance of job control as a predictor of chronic heart disease. This analysis also showed express evidence for the role of demands no ne at all for an interaction effect. Wh! ilst the evidence is inconclusive as regards Karasecks model. Carayon (93), set a number of methodological issues with this work. He suggests that most look into contains discombobulate effects, and highlights the difficulties in constraining numerous variables. Inconsistencies may also reply from a lack of sensitivity of the measures, and the manner in which closing latitude, control and discretion are...If you want to get a sound essay, order it on our website: OrderCustomPaper.com

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