This paper examines the impacts of information about COVID-19 on pig farmers'production willingness by using endorsement experiments and follow-up surveys conducted in 2020 and 2021 in China.Our results show that,...This paper examines the impacts of information about COVID-19 on pig farmers'production willingness by using endorsement experiments and follow-up surveys conducted in 2020 and 2021 in China.Our results show that,first,farmers were less willing to scale up production when they received information about COVID-19.The information in 2020 that the second wave of COVID-19 might occur without a vaccine reduced farmers'willingness to scale up by 13.4%,while the information in 2021 that COVID-19 might continue to spread despite the introduction of vaccine reduced farmers'willingness by 4.4%.Second,farmers whose production was affected by COVID-19 were considerably less willing to scale up,given the access to COVID-19 information.Third,farmers'production willingness can predict their actual production behavior.展开更多
The famous de Moivre’s Laplace limit theorem proved the probability density function of Gaussian distribution from binomial probability mass function under specified conditions. De Moivre’s Laplace approach is cumbe...The famous de Moivre’s Laplace limit theorem proved the probability density function of Gaussian distribution from binomial probability mass function under specified conditions. De Moivre’s Laplace approach is cumbersome as it relies heavily on many lemmas and theorems. This paper invented an alternative and less rigorous method of deriving Gaussian distribution from basic random experiment conditional on some assumptions.展开更多
Using a randomized experiment that we designed for the 2021 Chinese General Social Survey,this study conducts a conjoint analysis to explore the fertility potential among Chinese adults.We examine the separate impacts...Using a randomized experiment that we designed for the 2021 Chinese General Social Survey,this study conducts a conjoint analysis to explore the fertility potential among Chinese adults.We examine the separate impacts of different factors and their heterogeneity across social groups.The results suggest that fertility potential is context-dependent.In addition,greater economic resources and availability of childcare significantly increase fertility potential.However,preferences in terms of the care provider,family versus the market,vary by gender,educational level,and desired number of children.Notably,we also find that son preference no longer has a significant effect on fertility potential in China.In light of China’s current low fertility,our study suggests that childbearing behavior will become increasingly differentiated by socioeconomic status.Fertility-enhancing policies should focus on supplementing economic resources and improving access to childcare.展开更多
基金supported by the National Social Science Fund of China(23&ZD045)the Humanities and Social Sciences Youth Foundation of the Ministry of Education of China(21YJC790087)+1 种基金the Center for Social Welfare and Public Governance of Zhejiang University,Chinathe Fundamental Research Funds for the Central Universities,China。
文摘This paper examines the impacts of information about COVID-19 on pig farmers'production willingness by using endorsement experiments and follow-up surveys conducted in 2020 and 2021 in China.Our results show that,first,farmers were less willing to scale up production when they received information about COVID-19.The information in 2020 that the second wave of COVID-19 might occur without a vaccine reduced farmers'willingness to scale up by 13.4%,while the information in 2021 that COVID-19 might continue to spread despite the introduction of vaccine reduced farmers'willingness by 4.4%.Second,farmers whose production was affected by COVID-19 were considerably less willing to scale up,given the access to COVID-19 information.Third,farmers'production willingness can predict their actual production behavior.
文摘The famous de Moivre’s Laplace limit theorem proved the probability density function of Gaussian distribution from binomial probability mass function under specified conditions. De Moivre’s Laplace approach is cumbersome as it relies heavily on many lemmas and theorems. This paper invented an alternative and less rigorous method of deriving Gaussian distribution from basic random experiment conditional on some assumptions.
文摘Using a randomized experiment that we designed for the 2021 Chinese General Social Survey,this study conducts a conjoint analysis to explore the fertility potential among Chinese adults.We examine the separate impacts of different factors and their heterogeneity across social groups.The results suggest that fertility potential is context-dependent.In addition,greater economic resources and availability of childcare significantly increase fertility potential.However,preferences in terms of the care provider,family versus the market,vary by gender,educational level,and desired number of children.Notably,we also find that son preference no longer has a significant effect on fertility potential in China.In light of China’s current low fertility,our study suggests that childbearing behavior will become increasingly differentiated by socioeconomic status.Fertility-enhancing policies should focus on supplementing economic resources and improving access to childcare.
