نتایج جستجو برای: g23 h55 j32

تعداد نتایج: 522  

Journal: :American Economic Journal: Economic Policy 2023

This study identifies the causal effect of pension generosity on women’s fertility behavior. It capitalizes Brazil’s expansion system to rural workers, whose wealth subsequently more than tripled. Difference-in-difference, instrumental variable, and event methods show that reform reduces propensity childbearing women fertile age by 8 percent in short run. Completed declines 1.3 children within ...

ژورنال: زراعت دیم ایران 2013
اسماعیل‌ زادحسن رضا محمدی, محمد آرمیون مسعود اسکندری

این تحقیق به منظور تجزیه اثرات متقابل ژنوتیپ در محیط (G×E) برای عملکرد دانه درآزمایشات چند محیطی گندم دوروم در ایستگاه‌های تحقیقات کشاورزی دیم کشور با  استفاده از مدل‌های آماری   GGEبای‌پلات (اثر ژنوتیپ + اثر متقابل G×E) و  رگرسیون توام (ضریب رگرسیون + واریانس انحراف از رگرسیون) انجام شد. بر اساس نتایج تجزیه واریانس، سهم اثرات اصلی محیط، اثر متقابل G×E  و اثر ژنوتیپ به ترتیب 84%، 7/7%  و 3/2%  ...

2014
Simon C. Parker

Crowdfunding, Cascades and Informed Investors Do higher proportions of (a) informed investors and (b) high-quality projects increase the number of good projects that are ultimately financed via crowdfunding? A simple model and simulation reveals the answers to both questions to be: ‘not necessarily’. JEL Classification: L26, C63, G23

2014
Luke Haywood

Jobs offer different wages and different non-monetary working conditions. This paper investigates how the demand for non-monetary aspects evolves over changing wealth levels. Wages do not perfectly compensate individuals for differential utility of jobs in a labour market with informational frictions. Changes in wealth may then affect preferences for different jobs. Willingness to pay for non-m...

2013
Johannes Martin

Using data of the German Socio-Economic Panel (GSOEP) earnings differentials between self-employed and wage-employed workers in the German labor market are explored. Previous research based on US data reports lower incomes for entrepreneurs. In contrast to that, the findings of this contribution suggest the opposite for German entrepreneurs. They have considerably higher earnings than wage-empl...

2005
John W. Budd Karen Mumford

Family-Friendly Work Practices in Britain: Availability and Perceived Accessibility Using linked data for British workplaces and employees we find a low base rate of workplacelevel availability for five family-friendly work practices – parental leave, paid leave, job sharing, subsidized child care, and working at home – and a substantially lower rate of individual-level perceived accessibility....

2008
James MacGee Jie Zhou

This paper investigates the effect of private pensions on the retirement wealth distribution. We incorporate stochastic private pension coverage into a calibrated life-cycle model with stochastic earnings. Private pensions lead to higher net worth inequality at retirement, which is closer to the inequality observed in the PSID than a model without private pensions. However, the offset effect of...

2006
Armando Barrientos

This paper examines retirement behaviour and household income for older persons in Chile. It pays close attention to the sources of household income, income inequalities, and the economic vulnerability of older persons. This is important in order to evaluate whether labour market and social security reform in Latin America will improve the welfare of older groups, and especially their vulnerabi...

2007
Niku Määttänen Panu Poutvaara

Should Old-Age Benefits Be Earnings-Tested? We study the welfare effects of earnings testing flat-rate old-age benefits in a quantitative overlapping generations model with idiosyncratic labor income risk. In our model economy, even a moderate earnings testing reduces individuals’ expected lifetime utility, whenever other taxes are taken into account. Moreover, it also lowers the realized lifet...

2004
Michael Bräuninger

The paper develops an overlapping generations model that highlights interactions between social security, unemployment and growth.The social security system has two components: old age pensions and unemployment insurance. Pensions have a direct effect on economic growth. Both pensions and unemployment benefits influence equilibrium unemployment caused by wage bargaining. Since unemployment impa...

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