This paper proposes a new identi cation and estimation method for the extended Roy model, in which the agents maximize their utility rather than just outcome. The identi cation results substantially relax conventional functional form restrictions. No functional form restriction is imposed on the distribution of the potential outcomes. The utility functions are allowed to be nonlinear so that it...

We propose a model of labor market sector self-selection that combines comparative advantage, as in the Roy model, and composition preference. Two groups choose between two sectors based on heterogeneous potential incomes group compositions each sector. Potential incorporate specific human capital accumulation wage discrimination. Composition preferences are interpreted reflecting amenity well ...

Nutritional health of community-dwelling elders has been shown to be one of the prime indices of health, influencing the elders' ability to live independently. However, little research has been directed toward understanding the dynamics of nutritional health in community-dwelling elders using a multidimensional theory approach. The purpose of this study was to evaluate the dynamics of nutrition...

A woman's ability to navigate her new role as a breast cancer patient can be impacted by the support she has available to her during this time. One form of social support, tangible support, refers to providing support in a physical way that assists an individual in meeting their role responsibilities. The Roy Adaptation Model was used as a framework for conceptualizing the various roles in a wo...

This paper studies non-parametric identi…cation and the testable implications of the Roy Model. Results in the literature are generalized in three directions. First, my model allows fully general functions that characterize the income of di¤erent occupations. Second, identi…cation is obtained using strictly weaker exclusion restrictions. For example, the model with additive heterogeneity is non...

Monosodium glutamate (MSG) is one of the commonest food additives in the developed world and it is a commonly used flavour enhancer. MSG can be found in various concentrations in numerous food products. MSG is a sodium salt of glutamic acid, a naturally occurring non-essential amino acid with trade names such as Ajinomoto, Vetsin, Ac’cent and Tasting Powder. Although, MSG could improve the pala...