In the 1970s another concept was introduced into the theoretical framework, that of the vulnerability or resistance of the individual who was exposed to stressful stimuli. Cassel (1976) hypothesized that host resistance was a crucial factor in the outcome of stress or the impact of stress on health. The fact that host resistance had not been taken into account in many studies might explain why so many inconsistent and contradictory results had been obtained on the health effect of stress. According to Cassel, two factors were essential in determining the degree of a persons host resistance: his or her capacity for coping and his or her social supports.
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The dynamic version of the Demand/Control model () integrates environment effects with person-based phenomena such as self-esteem development and long-term exhaustion. The dynamic version integrates person-based and environmental factors by building two combined hypotheses on the original strain and learning mechanisms: (a) that stress inhibits learning; and (b) that learning, in the long term, can inhibit stress. The first hypothesis is that high-strain levels may inhibit the normal capacity to accept a challenge, and thus inhibit new learning. These high-strain levels may be the result of long-lasting psychological strain accumulated over time - and reflected in person-based measures (, diagonal arrow B). The second hypothesis is that new learning may lead to feelings of mastery or confidence - a person-based measure. These feelings of mastery, in turn, can lead to reduced perceptions of event as stressful and increased coping success ( , diagonal arrow A). Thus, environmental factors, over the long term, partly determine personality, and later, environmental effects are moderated by these previously developed personality orientations. This broad model could incorporate the following, more specific measures of personal response: feelings of mastery, denial, alexithymia, trait anxiety, trait anger, vital exhaustion, burnout, culmulative life-stressor implications, and possibly Type A behaviour components.
Silverman Matching Hypothesis - UW Milk Quality
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* A major stimulus for the development of the strain hypothesis of the Demand/Control model in 1974 were Dements observations (1969) that vital relaxation related to REM dreaming was inhibited if sleep-deprived cats were constrained by a treadmill (perhaps like an assembly line) after periods of extreme psychological stressor exposure. The combined actions of both environmental stressors and low environmental control were essential elements in producing these effects. The negative impacts, in terms of mental derangement, were catastrophic and led to inability to coordinate the most basic physiological processes.
also at the heart of what is known as the Borlaug Hypothesis ..
According to Supers career development model (Super 1957; Ornstein, Cron and Slocum 1989) the four career stages are based on the qualitatively different psychological task of each stage. They can be based either on age or on organizational, positional or professional tenure. The same people can recycle several times through these stages in their work career. For example, according to the Career Concerns Inventory Adult Form, the actual career stage can be defined at an individual or group level. This instrument assesses an individuals awareness of and concerns with various tasks of career development (Super, Zelkowitz and Thompson 1981). When tenure measures are used, the first two years are seen as a trial period. The establishment period from two to ten years means career advancement and growth. After ten years comes the maintenance period, which means holding on to the accomplishments achieved. The decline stage implies the development of ones self-image independently of ones career.
Quantifying the consensus on anthropogenic global …
A newer development has been the study of Type A behaviour as a risk factor for injuries and mild and moderate illnesses both in occupational and student groups. It is rational to hypothesize that people who are hurried and aggressive will incur the most accidents at work, in sports and on the highway. This has been found to be empirically true (Elander, West and French 1993). It is less clear theoretically why mild acute illnesses in a full array of physiologic systems should occur more often to Type A than Type B persons, but this has been found in a few studies (e. g. Suls and Sanders 1988). At least in some groups, Type A was found to be associated with a higher risk of future mild episodes of emotional distress. Future research needs to address both the validity of these associations and the physical and psychological reasons behind them.