"Five groups of 15 men each learned a rotary pursuit task for 45 trials. During the first 30 trials, Ss heard a 1000-cps tone after being on target continuously for one of five durations. These delay of information feedback intervals were .0, .2, .4, .8, and 1.6 sec. During the last 15 trials no tone was heard. The results were negative in that different delays of information feedback did not significantly affect performance. These results were unlike those of Reynolds and Adams. An explanation in terms of different motivational effects of information feedback was offered." (PsycINFO Database Record (c) 2006 APA, all rights reserved)