Religious worship is integral to the lives of millions of Americans. In this paper, I provide a descriptive analysis of religious worship attendance using geodata from smartphones for over 2 million Americans in 2019. I establish several key findings. First, 73% of people step into a religious...

This study provides new identification and estimation results for ascending (traditional English or online) auctions with unobserved auction-level heterogeneity and an unknown number of bidders. When the seller's reserve price and two order statistics of bids are observed, we derive conditions...