TY - JOUR AU - Gan,Li AU - Li,Qi TI - Efficiency of Thin and Thick Markets JF - National Bureau of Economic Research Working Paper Series VL - No. 10815 PY - 2004 Y2 - October 2004 UR - http://www.nber.org/papers/w10815 L1 - http://www.nber.org/papers/w10815.pdf N1 - Author contact info: Li Gan Department of Economics Texas A&M University College Station, TX 77843-4228 Tel: 979/862-1667 Fax: 979/847-8747 E-Mail: gan@econmail.tamu.edu AB - In this paper, we propose a matching model to study the efficiency of thin and thick markets. Our model shows that the probabilities of matches in a thin market are significantly lower than those in a thick market. When applying our results to a job search model, it implies that, if the ratio of job candidates to job openings remains (roughly) a constant, the probability that a person can find a job is higher in a thick market than in a thin market. We apply our matching model to the U.S. academic market for new PhD economists. Consistent with the prediction of our model, a field of specialization with more job openings and more candidates has a higher probability of matching. ER -