The effectiveness of electromyographic (EMG) biofeedback/relaxation training on the stress management and anxiety levels of 18 eighth-grade students was tested. Chapter I serves as an introduction and presents information on the need for the study, hypotheses, limitations, and definition of terms. Chapter II contains a review of related literature. The third chapter describes the research methods used. Pre- and post-test instruments were a stress management inventory and the State-Trait Inventory to measure stress and anxiety, and Cyborg BL 900 and EMG J33 instruments measured forehead muscle tension. Experimental group students participated in four 50-minute EMG training sessions in which they were taught muscle relaxation exercises through instrumentation that detects and immediately feeds back continuous electronic signals representing changes in muscle tension. The control group was given the same treatment time without EMG training. Chapters IV and V contain results and discussion, summary, conclusions, and recommendations. Results showed that, although stress management behavior was enhanced and anxiety level and muscle tension decreased, differences between the control and experimental groups were not statistically significant. Since research literature points to successful use of EMG training for decreasing muscle tension, it is recommended that future studies increase treatment sessions and relaxation exercises and redesign the test to accommodate a third control group and off-site practice sessions. Appendixes contain various materials used in or for the study. (FG)