A primary goal of transfer programs to the non-aged, non-disabled poor in the United States is to improve the well-being of children in poor families. Thus it is surprising that most of the considerable research which has been devoted to the study of transfer programs focuses on the incentive...

This paper examines the role physical activity plays in determining body mass using data from the American Time Use Survey. Our work is the first to address the measurement error that arises when time use during a single day--rather than average daily time use over an extended period--is used as...