Before revision:  I illustrate how a computational procedure can be used to learn about these parameters in this model. Using the developed framework , I analyze the effects of providing access to the Head Start preschool program given data from the Head Start Impact Study.
After revision:  I illustrate how a computational procedure can be used to sharply learn about the parameters under the various assumptions. Using these tools , I analyze the effects of providing access to the Head Start preschool program given data from the Head Start Impact Study.