Results from the Seattle and Denver Income Maintenance Experiments are used to predict nationwide labor-supply effects and costs of six alternative negative income tax programs. To make the predictions, a labor-supply model parameterizing the experimental treatments is estimated using...

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...