【1】Sergio Currarini, Matthew O. Jackson, and Paolo Pin:
An Economic Model ofFriendship: Homophily,Minorities, and Segregation

【2】ORIANA BANDIERA, IWAN BARANKAY, AND IMRAN RASUL: Social Connections and Incentives in theWorkplace: Evidence FromPersonnel Data

【3】RODNEY J. GARRATT, THOMAS TRÖGER, AND CHARLES Z. ZHENG: Collusion via Resale

【4】CHRISTIAN HELLWIG AND GUIDO LORENZONI: Bubbles and Self-Enforcing Debt

【5】ARNAUD COSTINOT: An Elementary Theory of Comparative Advantage.

【6】EMMANUEL GUERRE, ISABELLE PERRIGNE, AND QUANG VUONG: Nonparametric Identification of Risk Aversion in First-Price Auctions Under Exclusion Restrictions

【7】JUSHAN BAI: Panel DataModelsWith Interactive Fixed Effects

【8】FEDERICO ECHENIQUE AND IVANA KOMUNJER: Testing Models With Multiple Equilibria by Quantile Methods

【9】JÖRG STOYE: More on Confidence Intervals for Partially Identified Parameters

【10】OLIVIER GOSSNER, EHUD KALAI, AND ROBERT WEBER: Information Independence and Common Knowledge