A study was conducted involving eight hyperkinetic males (11-15 years old) to determine if Ss receiving electromyography (EMG) biofeedback training would show a reduction in frontalis muscle tension, hyperactivity, and lability, and increases in self-esteem and visual and auditory attention span. Individual 45- and 30-minute relaxation exercises which involved tension and relaxation of all muscle groups combined with visualization techniques were presented to all Ss. The experimental group (n=4) received nine 20-minute feedback sessions in which each S was instructed that his goal was to lower his overall body tension--to be relaxed--and that the reading on the EMG meter display would be the measure of his relaxation. Pre- and post-EMG training test batteries were given to all Ss and included the Student Self-Liking Rating, Draw A Person Test, Wechsler Intelligence Scale for Children, and the Wide Range Achievement Test. All Ss significantly reduced hyperactivity and lability, and increased auditory attention. There were no significant changes between the experimental and control groups. (Author/SB)