This note tests the assumption of dynamic discrete choice models that underlying utility shocks have an extreme value type I distribution. We find that extreme value type I shocks cannot be rejected in most specifications of the Rust (1987) bus engine replacement model.

Existing hedonic methods cannot be easily adapted to estimate willingness to pay for product characteristics when willingness to pay depends on a very large basket of goods. We show how to marry these methods with revealed preference arguments to estimate bounds on willingness to pay using data...