Event Studies in Economics and Finance STOR A.Craig MacKinlay Journal of Economic Literature,Volume 35,Issue 1 (Mar.,1997),13-39. Stable URL: http://links.istor.org/sici?sici=0022-0515%28199703%2935%3A1%3C13%3AESIEAF3E2.0.CO%3B2-W Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use,available at http://www.jstor.org/about/terms.html.JSTOR's Terms and Conditions of Use provides,in part,that unless you have obtained prior permission,you may not download an entire issue of a journal or multiple copies of articles,and you may use content in the JSTOR archive only for your personal,non-commercial use. Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. Journal of Economic Literature is published by American Economic Association.Please contact the publisher for further permissions regarding the use of this work.Publisher contact information may be obtained at http://www.jstor.org/journals/aca.html. Journal of Economic Literature 1997 American Economic Association JSTOR and the JSTOR logo are trademarks of JSTOR,and are Registered in the U.S.Patent and Trademark Office. For more information on JSTOR contact jstor-info@umich.edu. ©2003 JSTOR http://www.jstor.org/ Sun Feb1608:14:172003