We use exogenous variations in fertility due to twin births to measure the impact of an unplanned child on married women's labor supply and earnings. Although the overall effects of an unplanned birth on labor supply are small, we find significant effects in the years immediately following the...

This paper considers the question of how to measure and interpret the financial return to investing in collectibles. We review various methodologies for creating priced indexes and then discuss studies that explicitly calculate a rate of return to some set of collectibles. While most...