Tipsters Annette TAylor, Jorge Alvoeiro, and Stephen Black, Thanks for your response to my call for references on studies looking at effects of caffine on signal detection performance. They were very helpful, and my student is greatful for the leads which she is now following up on. Thanks again, Dave ***************************************************************************************** David L. Carpenter, Ph.D. Phone: 716 375-2499 Department of Psychology FAX: 716 375-7618 St. Bonaventure Univ. Email: [EMAIL PROTECTED] St. Bonaventure, NY 14778 WEB: WWW.SBU.EDU/PSYCHOLOGY/DCARP *****************************************************************************************