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151.
Individual behavior under risk and under uncertainty: An experimental study   总被引:1,自引:1,他引:0  
These experiments are concerned with individual behavior under risk and under uncertainty. By exploiting the isolation effect the experiments were able to offer to 134 subjects the possibility of actually gaining or losing an important sum of money.The experimental data show that under risk as well as under complete ignorance the subjects' attitudes towards prospects of gains and towards prospects of losses are totally unrelated.The data also show that when facing prospects of gains, the subjects generally take the exact probabilities of the events into account, whereas, when facing prospects of losses many of then have only recourse to coarser categories of plausibility, or even no longer use their information at all.  相似文献   
152.
A scattering of recent research has studied the current politicalbeliefs and attitudes of individuals identified as "1960s activists."In contrast to much of the treatment accorded such people inthe popular media, this research tends to find most of theseactivists currently liberal on a wide variety of political topics.However, in the absence of panel data, most of this researchhas had to assess any change in the activists' attitudes eitherby assuming the activists' past positions or by trusting totheir retrospective reports. In this paper we report on panel data from a large group ofwhite activists, mostly students, who spent the summer of 1965organizing voter registration drives in Southern black communities.In some specific areas on which the activists tended to holdrather extreme positions in 1965, they may have moderated by1984. However, their overall pattern of response on a wide varietyof issues is basically stable over this twenty-year period.  相似文献   
153.
The impact of immigration on unemployment in Canada is examined for the period 1983-1985. The authors attempt to construct a balance sheet of immigration in terms of labor supply and demand. They conclude that immigrants create more jobs than they fill, and that their net effect on the employment situation is positive. (SUMMARY IN FRE AND SPA)  相似文献   
154.
The author describes and evaluates some little-known sources of data on the Southern Andes for the period from the sixteenth to the eighteenth century.  相似文献   
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157.
Technologies with significant implications for expenditures continue to reach the health care system. These technologies range from orphan drugs/biologicals used to treat rare diseases to balloons used to treat the common occurrence of benign prostatic hyperplasia (BPH) in aging men. Because payment for these technologies can represent a serious financial drain on third-party payers, utilization has to be carefully evaluated, monitored, and controlled.  相似文献   
158.
The term "investigational" has become the fulcrum upon which coverage decisions turn. All third-party payers, including the federal government, use varying definitions of the term for the purpose of excluding treatments from coverage for payment. Unfortunately, no consistent definition of the term is available to payers to guide them in their coverage decisions.  相似文献   
159.
Coverage decisions by third-party payers are relying more and more heavily on the conclusions of technology assessment programs about the safety and effectiveness of technologies applied in specific clinical situations. Assessment programs vary markedly in the sophistication and rigor of their methodology. Payers differ as to how such assessment information is integrated into their decision-making processes. Finally, coverage decisions about a specific technology can vary widely across the country.  相似文献   
160.
Assaultive behavior. Does provocation begin in the front office?   总被引:3,自引:0,他引:3  
1. Provocation is an important risk predictor because these issues can be recognized, assessed, and appropriate interventions can be implemented to reduce the associated risks. It is only by the reduction of such "non-fixed" risk factors that any reduction of assaults can be accomplished. 2. Involuntary admission, patients with dementia or organic brain disorder, physical or verbal limits, staff attitude, denial of the possibility of assaults, and the educational level and clinical experience of the staff may help provoke an assaultive episode. 3. An important step is assessing the assault to identify provocation due to certain medical causes, and to document the extent of degeneration in patients with dementia or organic brain disorder. Medical intervention would be indicated and would appropriately address the causes of some violent episodes.  相似文献   
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