The Experts below are selected from a list of 69 Experts worldwide ranked by ideXlab platform
Richard J Zeckhauser - One of the best experts on this subject based on the ideXlab platform.
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investment flexibility and the Acceptance of Risk
Journal of Economic Theory, 1997Co-Authors: Christian Gollier, John H Lindsey, Richard J ZeckhauserAbstract:Abstract The hypothesis examined in this paper is that the greater the investor's flexibility, the easier it is for him to change his portfolio depending on his results, the more willing he will be to accept Risks. When the investor has no control on the size of the Risky investment, but can choose between one Risky and one Riskless asset, this conjecture is shown to be correct. However, if there is more than one Risky asset each period, counterexamples demonstrate that flexibility rarely ensures greater Risk taking. For the standard portfolio problem in which investors are free to determine the size of their investment in a Risky asset, flexibility always raises the demand for the Risky asset if constant relative Risk aversion is less than unity. But counterexamples can always be found when the constant relative Risk aversion is larger than unity.Journal of Economic LiteratureClassification Numbers: G11, D81, D84.
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investment flexibility and the Acceptance of Risk
Research Papers in Economics, 1996Co-Authors: Christian Gollier, John H Lindsey, Richard J ZeckhauserAbstract:The hypothesis examined in this paper is that the greater the investor's flexibility, the easier it is for him to change his portfolio depending on his results, the more willing he will be to accept Risks. When the investor has no control on the size of the Risky investment, but can choose between one Risky and one Riskless asset, this conjecture is shown to be correct.
Christian Gollier - One of the best experts on this subject based on the ideXlab platform.
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investment flexibility and the Acceptance of Risk
Journal of Economic Theory, 1997Co-Authors: Christian Gollier, John H Lindsey, Richard J ZeckhauserAbstract:Abstract The hypothesis examined in this paper is that the greater the investor's flexibility, the easier it is for him to change his portfolio depending on his results, the more willing he will be to accept Risks. When the investor has no control on the size of the Risky investment, but can choose between one Risky and one Riskless asset, this conjecture is shown to be correct. However, if there is more than one Risky asset each period, counterexamples demonstrate that flexibility rarely ensures greater Risk taking. For the standard portfolio problem in which investors are free to determine the size of their investment in a Risky asset, flexibility always raises the demand for the Risky asset if constant relative Risk aversion is less than unity. But counterexamples can always be found when the constant relative Risk aversion is larger than unity.Journal of Economic LiteratureClassification Numbers: G11, D81, D84.
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investment flexibility and the Acceptance of Risk
Research Papers in Economics, 1996Co-Authors: Christian Gollier, John H Lindsey, Richard J ZeckhauserAbstract:The hypothesis examined in this paper is that the greater the investor's flexibility, the easier it is for him to change his portfolio depending on his results, the more willing he will be to accept Risks. When the investor has no control on the size of the Risky investment, but can choose between one Risky and one Riskless asset, this conjecture is shown to be correct.
John H Lindsey - One of the best experts on this subject based on the ideXlab platform.
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investment flexibility and the Acceptance of Risk
Journal of Economic Theory, 1997Co-Authors: Christian Gollier, John H Lindsey, Richard J ZeckhauserAbstract:Abstract The hypothesis examined in this paper is that the greater the investor's flexibility, the easier it is for him to change his portfolio depending on his results, the more willing he will be to accept Risks. When the investor has no control on the size of the Risky investment, but can choose between one Risky and one Riskless asset, this conjecture is shown to be correct. However, if there is more than one Risky asset each period, counterexamples demonstrate that flexibility rarely ensures greater Risk taking. For the standard portfolio problem in which investors are free to determine the size of their investment in a Risky asset, flexibility always raises the demand for the Risky asset if constant relative Risk aversion is less than unity. But counterexamples can always be found when the constant relative Risk aversion is larger than unity.Journal of Economic LiteratureClassification Numbers: G11, D81, D84.
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investment flexibility and the Acceptance of Risk
Research Papers in Economics, 1996Co-Authors: Christian Gollier, John H Lindsey, Richard J ZeckhauserAbstract:The hypothesis examined in this paper is that the greater the investor's flexibility, the easier it is for him to change his portfolio depending on his results, the more willing he will be to accept Risks. When the investor has no control on the size of the Risky investment, but can choose between one Risky and one Riskless asset, this conjecture is shown to be correct.
Zhiqiang Guan - One of the best experts on this subject based on the ideXlab platform.
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depression after exposure to stressful events lessons learned from the severe acute respiratory syndrome epidemic
Comprehensive Psychiatry, 2012Co-Authors: Xinhua Liu, Yunyun Fang, Junhui Kong, Cordelia J Fuller, Meghana Kakade, Bin Fan, Zhiqiang GuanAbstract:Abstract Aim The aim of the study was to examine, among hospital employees exposed to an outbreak of severe acute respiratory syndrome (SARS), post-outbreak levels of depressive symptoms and the relationship between those depressive symptom levels and the types of outbreak event exposures experienced. Methods In 2006, randomly selected employees (N = 549) of a hospital in Beijing were surveyed concerning their exposures to the city's 2003 SARS outbreak and the ways in which the outbreak had affected their mental health. Subjects were assessed on sociodemographic factors, on types of exposure to the outbreak, and on symptoms of posttraumatic stress disorder and depression. Results The results of multinomial regression analyses showed that, with other relevant factors controlled for, being single, having been quarantined during the outbreak, having been exposed to other traumatic events before SARS, and perceived SARS-related Risk level during the outbreak were found to increase the odds of having a high level of depressive symptoms 3 years later. Altruistic Acceptance of Risk during the outbreak was found to decrease the odds of high post-outbreak depressive symptom levels. Conclusions Policy makers and mental health professionals working to prepare for potential disease outbreaks should be aware that the experience of being quarantined can, in some cases, lead to long-term adverse mental health consequences.
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the psychological impact of the sars epidemic on hospital employees in china exposure Risk perception and altruistic Acceptance of Risk
The Canadian Journal of Psychiatry, 2009Co-Authors: Ping Wu, Yunyun Fang, Zhiqiang Guan, Junhui Kong, Cordelia J Fuller, Ezra Susser, Jin Lu, Christina W HovenAbstract:Objective:We examined the psychological impact of the 2003 outbreak of severe acute respiratory syndrome (SARS) on hospital employees in Beijing, China.Methods:In 2006, randomly selected employees ...
C P Shearman - One of the best experts on this subject based on the ideXlab platform.
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understanding patient Acceptance of Risk with treatment options for intermittent claudication
Annals of Vascular Surgery, 2017Co-Authors: Abigail H M Morbi, Sophie Coles, Mostafa Albayati, Ian M Nordon, C P ShearmanAbstract:Background Intermittent claudication has a major impact on the quality of life and functional ability of the patient. However, when treating these patients, management is largely influenced by vascular surgeons' perceptions of Risk. There is little information available regarding the level of Risk that patients perceive to be acceptable, when considering complications of treatment. This study investigates patients' Acceptance of Risk associated with current management options for intermittent claudication and explores factors associated with greater Risk Acceptance. Methods Patients with confirmed intermittent claudication presenting to vascular clinic and supervised exercise classes were surveyed in a single-center prospective study. A standard gamble-type method was used to measure patients' Acceptance of Risk associated with medical treatment, angioplasty, and surgical bypass. Level of Risk Acceptance was correlated to patient factors. Results Fifty patients were surveyed; 74% were male, median age was 68 years (interquartile range [IQR] 59–74), maximal walking distance was 100 m (IQR 70–200), and ankle–brachial pressure index was 0.65 (IQR 0.60–0.78). Median Risk Acceptance for treatment failure was 70% for medical treatment, 50% for angioplasty, and 40% for surgical bypass. Median Risk Acceptance for major amputation and death was 0% for all 3 management options. Claudicants with maximal walking distance Conclusions Claudicants are prepared to accept significant Risk of treatment failure, in order to gain benefit, but regardless of claudication distance, patients have low Acceptance of the Risk of amputation or death. Patient Acceptance of Risk should be considered when planning management.
