It was the purpose of this study to determine the effectiveness of developing auditory discrimination skills in kindergarten children through a series of 24 lessons prepared by the investigator and deemed appropriate by kindergarten teachers. The effect of the auditory discrimination lessons on listening habits and attitudes was also examined. Seven experimental and six control groups containing 179 and 176 kindergartners, respectively, were the subjects of the study. The experimental groups engaged in a 12-week program of auditory discrimination skills composed of the 24 lessons. The lessons were taught to the whole class twice weekly, with provision for extra reinforcement of the skills taught. Control groups carried on a normal kindergarten program. At the end of the 12 weeks, pre- and post-test results were analyzed to determine whether there were any significant differences between mean test scores; "t" tests were applied. Conclusions include: (1) Experimental and control groups were significantly different on the factor of mental age at the start of the study; (2) Experimental and control groups were not significantly different in auditory discrimination test scores or listening habits and attitudes at the beginning of the study; (3) The control group at a significantly higher phoneme test score than the experimental group at the start of the study; (4) At the close of the study, the experimental group's (a) mean reduction in error score in auditory discrimination and (b) phonemes test scores were significantly better than those of the control group. (Author/CK)