This paper examines the correlated random coefficient model. It extends the analysis of Swamy (1971, 1974), who pioneered the uncorrelated random coefficient model in economics. We develop the properties of the correlated random coefficient model and derive a new representation of the variance...

The recent literature on instrumental variables (IV) features models in which agents sort into treatment status on the basis of gains from treatment as well as on baseline-pretreatment levels. Components of the gains known to the agents and acted on by them may not be known by the observing...

This paper provides a brief review of the economic rationale for investing in early childhood. It discusses the optimal timing of intervention, with reference to recent work in developmental neuroscience, and asks how early is early? It motivates the need for early intervention by providing an...

This paper develops the method of local instrumental variables for mod- els with multiple, unordered treatments when treatment choice is determined by a nonparametric version of the multinomial choice model. Responses to interventions are permitted to be heterogeneous in a general way and agents...

The literature on skill formation and human capital development clearly demonstrates that early investment in children is an equitable and efficient policy with large returns in adulthood. Yet little is known about the mechanisms involved in producing these long-term effects. This paper presents...

This paper examines government subsidisation of home ownership in Ireland since the start of the 20th Century. It argues that during the first two thirds of this period, Ireland slowly assembled government home ownership supports of such scale – in terms of the generosity of subsidies, their...

The aim of this paper is to study the ex-ante effects of the implementation of a Non Contributory Pension (NCP) program in Colombia and Peru. Relying on household survey data, we simulate the potential impact of the transfer on poverty, inequality, fiscal cost, and the probability of affiliation...

This paper examines how ownership affects professional behaviour, treatment quality and patient satisfaction in the case of hip replacements in Ireland. We use quantitative data for public hospitals and the author's own surveys for the private sector and qualitative data from 12 interviews,...