The sum of squared intraday returns provides an unbiased and almost error-free measure of ex-post volatility. In this paper we develop a nonlinear Autoregressive Fractionally Integrated Moving Average (ARFIMA) model for realized volatility, which accommodates level shifts, day-of-the-week...

This paper estimates the causal effect of being born to a teenage mother on children's outcomes, exploiting compulsory schooling changes as the source of exogenous variation. We impose external estimates of the direct effect of maternal education on child outcomes within a plausible exogeneity...

This paper examines the socio-economic consequences of teenage motherhood for a cohort of British women born in 1970. We employ a number of methods to control for observed and unobserved differences between women who gave birth as a teenager and those who do not. We present results from...

This paper attempts to uncover the effects of a welfare-to-work programme that acts as a wage subsidy on wage growth by exploiting an expansion to this welfare programme in the UK. The conventional wisdom is that such programmes trap recipients into low wage, low quality work – this comes from...

This paper examines the socio-economic consequences of teenage motherhood for a cohort of British women born in 1970. We apply a number of different methodologies on the same dataset, including OLS, a propensity score matching estimator, and an instrumental variables estimator, using...

This paper investigates the robustness of recent findings on the effect of parental background on child health. We are particularly concerned with the extent to which their finding that income effects on child health are the result of spurious correlation rather than some causal mechanism. A...

This paper investigates the robustness of recent findings on the effect of parental education and income on child health. We are particularly concerned about spurious correlation arising from the potential endogeneity of parental income and education. Using an instrumental variables approach,...

This paper provides estimates of the impact of higher education qualifications on the earnings of graduates in the UK by subject studied. We use data from the recent UK Labour Force Surveys which provide a sufficiently large sample to consider the effects of the subject studied, class of first...

We examine the effect of attending academically selective high schools on test scores, by leveraging administrative data that matches high school preferences of the population of urban middle school graduates in one Chinese prefecture in 2010 with high school student records. The standard...