We give semiparametric identification and estimation results for econometric models with a regressor that is endogenous, bound censored, and selected; it is called a Tobin regressor. First, we show that the true parameter value is set-identified and characterize the identification sets. Second, we...

Time use researchers frequently debate whether it is more appropriate to fit censored regression (Tobit) models using maximum likelihood estimation or linear models using ordinary least squares (OLS) to explain individuals’ allocations of time to different activities as recorded in time-diary...

We present a simple way to estimate the effects of changes in a vector of observable variables X on a limited dependent variable Y when Y is a general nonseparable function of X and unobservables. We treat models in which Y is censored from above or below or potentially from both. The basic idea...

This paper studies the dynamic relationship between input and output of innovation in Dutch manufacturing using an unbalanced panel of enterprise data from five waves of the Community Innovation Survey during 1994-2004. We estimate by maximum likelihood a dynamic panel data bivariate tobit with...

A highly pathogenic H5N1 strain of avian influenza (AI) has been confirmed in 420human cases and has caused 257 deaths in the world starting from 2003. Usingface-to-face interviews, our data were collected by utilizing a stratified samplingscheme following the distribution of gender and age in...

This paper contributes to two strands of literature on empirical models of trade flows and trade policy. The first and the older strand is that of gravity models of bilateral trade flows going back to Hans Linneman (1966) and Tinbergen (1962) and its recent applications, particularly by Adams et...

Soil fertility is considered as the most important constraint to increase maize production in Nepal. Although farmers generally apply farmyard manure available on their farms, there is increasing trend towards the use of fertilizers that is likely to augment maize production in Nepal. This study...