Would someone point me to an interactive signal detection theory tutorial to pass along to my students? The tutorial from Purdue (IPL)does not work with Netscape 4.7 for me and the Krantz tutorial (from Hanover) requires Office 2000! One would think that there must be a thousand SDT tutorials floating around but I haven't been able to find much beyond the standard 2 (yes - no) x 2 (target present - absent) table. Ken ---------------------- Kenneth M. Steele [EMAIL PROTECTED] Associate Professor Dept. of Psychology Appalachian State University Boone, NC 28608 USA