Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
In this paper, a model of participation in the Seattle and Denver Income Maintenance Experiments (SIME/DIME) is developed and estimated. The model explains why a family chooses to receive negative income tax (NIT) payments, chooses to remain in the experiment but not receive payments, or chooses to leave the experiment (attrition). It is assumed that an individual selects the option that yields the greatest amount of utility. The empirical formulation of the model relates program participation to experimentally induced changes in wage rates, nonwage income, and disposable income, and several nonexperimental variables. Based on the participation results, a model of labor supply with varying participation rates is specified and estimated.