目的:验证流调中心抑郁量表(The Center for Epidemiological Studies Depression Scale,CES-D)在我国青少年中的适用性。方法:收集10,210名13-18岁青少年被试做答的结果。结果:CES-D的Cronbach α系数为0.88;验证性因素分析支持原量表...目的:验证流调中心抑郁量表(The Center for Epidemiological Studies Depression Scale,CES-D)在我国青少年中的适用性。方法:收集10,210名13-18岁青少年被试做答的结果。结果:CES-D的Cronbach α系数为0.88;验证性因素分析支持原量表4因子的结构;性别差异显著,女生得分高于男生;年级差异显著,得分呈现随年级升高而升高的趋势;学业成绩、家庭状况等不同的被试在CES-D得分上也有显著差异。结论:CES-D在中学生群体中使用时显示出良好的信度和效度,基本适用于我国青少年。展开更多
This article studies optimal consumption-leisure, portfolio and retirement selection of an infinitely lived investor whose preference is formulated by a-maxmin expected CES utility which is to differentiate ambiguity ...This article studies optimal consumption-leisure, portfolio and retirement selection of an infinitely lived investor whose preference is formulated by a-maxmin expected CES utility which is to differentiate ambiguity and ambiguity attitude. Adopting the recursive multiple- priors utility and the technique of backward stochastic differential equations （BSDEs）, we transform the （^-maxmin expected CES utility into a classical expected CES utility under a new probability measure related to the degree of an investor＇s uncertainty. Our model investi- gates the optimal consumption-leisure-work selection, the optimal portfolio selection, and the optimal stopping problem. In this model, the investor is able to adjust her supply of labor flex- ibly above a certain minimum work-hour along with a retirement option. The problem can be analytically solved by using a variational inequality. And the optimal retirement time is given as the first time when her wealth exceeds a certain critical level. The optimal consumption-leisure and portfolio strategies before and after retirement are provided in closed forms. Finally, the distinctions of optimal consumption-leisure, portfolio and critical wealth level under ambiguity from those with no vagueness are discussed.展开更多
文摘目的:验证流调中心抑郁量表(The Center for Epidemiological Studies Depression Scale,CES-D)在我国青少年中的适用性。方法:收集10,210名13-18岁青少年被试做答的结果。结果:CES-D的Cronbach α系数为0.88;验证性因素分析支持原量表4因子的结构;性别差异显著,女生得分高于男生;年级差异显著,得分呈现随年级升高而升高的趋势;学业成绩、家庭状况等不同的被试在CES-D得分上也有显著差异。结论:CES-D在中学生群体中使用时显示出良好的信度和效度,基本适用于我国青少年。
基金Supported by National Natural Science Foundation of China (71171003, 71271003)Programming Fund Project of the Humanities and Social Sciences Research of the Ministry of Education of China (12YJA790041)+1 种基金Anhui Natural Science Foundation (090416225, 1208085MG116)Anhui Natural Science Foundation of Universities (KJ2010A037, KJ2010B026)
文摘This article studies optimal consumption-leisure, portfolio and retirement selection of an infinitely lived investor whose preference is formulated by a-maxmin expected CES utility which is to differentiate ambiguity and ambiguity attitude. Adopting the recursive multiple- priors utility and the technique of backward stochastic differential equations （BSDEs）, we transform the （^-maxmin expected CES utility into a classical expected CES utility under a new probability measure related to the degree of an investor＇s uncertainty. Our model investi- gates the optimal consumption-leisure-work selection, the optimal portfolio selection, and the optimal stopping problem. In this model, the investor is able to adjust her supply of labor flex- ibly above a certain minimum work-hour along with a retirement option. The problem can be analytically solved by using a variational inequality. And the optimal retirement time is given as the first time when her wealth exceeds a certain critical level. The optimal consumption-leisure and portfolio strategies before and after retirement are provided in closed forms. Finally, the distinctions of optimal consumption-leisure, portfolio and critical wealth level under ambiguity from those with no vagueness are discussed.
