Building on long-term benefits of early intervention (Paper 2 of this Series) and increasing
commitment to early childhood development (Paper 1 of this Series), scaled up support for …

Many empirical questions in economics and other social sciences depend on causal effects
of programs or policies. In the last two decades, much research has been done on the …

The event study model is a powerful econometric tool used for the purpose of estimating
dynamic treatment effects. One of its most appealing features is that it provides a built-in …

This paper synthesizes what economists have learned about human capital since Becker
(1962) into four stylized facts. First, human capital explains at least one-third of the variation …

This paper exploits a natural Market-based Environmental Regulation (MER) experiment
(the 2007 Sulfur dioxide (SO 2) Emissions Trading Pilot (ETP) of the 11th five-year plan …

Achieving environmental equity is important for ensuring resource utilization efficiency and
realizing sustainable development. Using panel data of 286 cities in China from 2011 to …

The impact of energy conservation and emission reduction (ECER) policies on domestic
waste control has not been determined. Previous papers have focused predominantly on …

Linear regressions with period and group fixed effects are widely used to estimate treatment
effects. We show that they estimate weighted sums of the average treatment effects (ATE) in …

In the 60-plus year history of returns to investment in education estimates, there have been
several compilations in the literature. This paper updates Psacharopoulos and Patrinos and …

Do family policies reduce gender inequality in the labor market? We contribute to this debate
by investigating the joint impact of parental leave and childcare, using administrative data …