We propose structural models of investment for the econometric estimation of the real option markup. Count data models offer flexible specifications for bringing real option investment models to aggregate market data. The empirical results for oil tanker investment data are supportive for the proposed structural models, as well as the real option hypothesis. We find that the sensitivity of inve...

We find that the static field enhancement of dielectronic recombination may be strongly reduced by the interaction between resonances through common continua. The interaction effect is not limited to a few resonances but extends over whole n manifolds, thus it can significantly reduce the field enhancement of the total recombination rate. The standard lowest order theory is recast using a compl...

We investigate the factors that contribute to participation in the Supplemental Nutrition Assistance Program (SNAP, formerly known as the Food Stamp Program) and the effects of such participation on self-assessed health (SAH). Our estimation approach consists of an endogenous switching ordered probability model, using the copula approach, for a sample of current and former Temporary Assistance ...

The share of household resources devoted to children is hard to identify, because consumption is measured at the household level, and goods can be shared. Using semiparametric restrictions on individual preferences within a collective model, we identify how total household resources are divided up among household members, by observing how each family member's expenditures on a single private go...

This paper uses control variables to identify and estimate models with nonseparable, multidimensional disturbances. Triangular simultaneous equations models are considered, with instruments and disturbances independent and reduced form that is strictly monotonic in a scalar disturbance. Here it is shown that the conditional cumulative distribution function of the endogenous variable given the i...

This paper proposes a new panel model of cross-sectional dependence. The model has a number of potential structural interpretations that relate to economic phenomena such as herding in financial markets. On an econometric level, it provides a flexible approach of modelling interactions across panel units and can generate endogenous cross-sectional dependence that can resemble the dependence tha...

Social Insurance Networks Based on administrative panel data from Norway, we examine how social insurance dependency spreads within neighborhoods, families, ethnic minorities, and among former schoolmates. We use a fixed effects methodology that accounts for endogenous group formation, contextual interactions, and time-constant as well as time-varying confounders. We report evidence that social...