SIGNAL-DETECTION ANALYSIS WAS APPLIED TO A CONTINUOUS SHORT-TERM RECOGNITION MEMORY TASK FOR 3-DIGIT NUMBERS. SS WERE 48 FEMALE UNDERGRADUATES. THE TYPICAL INCREASING FALSE-POSITIVE RATE ACCOMPANYING PROGRESS THROUGH THE TASK WAS INDICATED TO BE DUE SOLELY TO A SHIFTING CRITERION AND NOT TO A BUILDUP IN PROACTIVE INTERFERENCE. THIS SUGGESTS THAT, IN TERMS OF MEMORY CAPACITY, A STEADY STATE HAS BEEN OBTAINED. (17 REF.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)