An informational analysis was used to determine the maximum number of durations that Ss can identify. 20 Ss made absolute judgments of 3-9 auditory durations. The results indicate that, for durations in the range of .5-5.0 sec., accurate judgments were made for each of 6-7 durations; with intervals selected from a .1-1.0 sec. range, only 4-5 durations could be identified accurately. Knowledge of past results was found to aid in judgments in the .5-5.0 sec. range. The number of stimulus durations, knowledge of results, and range of durations were each found to have a significant effect on information transmission. (PsycINFO Database Record (c) 2006 APA, all rights reserved)