Key points are not available for this paper at this time.
present study was designed to investigate the relative increase in drive of anxious and nonanxious individuals as a function of different intensities of stimulation . . . The results indicated that both an increase in manifest anxiety and an increase in stimulus intensity were effective in increasing the speed of reaction during training, and in raising the height of the temporal gradient of response strength; neither factor was effective in steepening the slope of the gradient. 17 references. (PsycINFO Database Record (c) 2006 APA, all rights reserved)
Charles Wenar (1954) studied this question.