This study, which used systematic desensitization (SD) behavior therapy to reduce anxieties associated with giving speeches, was based on the hypothesis that subjects given SD therapy five times in 1 week (massed training) would achieve greater reduction of communication anxiety than would subjects treated once a week for 5 weeks (spaced training). Two groups of 19 college students and a control group were used as subjects. Pretest, post-test, and delayed post-test scores of the Personal Report of Communication Apprehension (PRCA) and post-test and delayed post-test scores of the Speech Anxiety Inventory (SAI) were analyzed and results indicated that the PRCA supported the hypothesis. Although the SAI did not support the hypothesis, both treatment groups improved significantly more than the control group. (Author/JM)