Abstract
This study examined the effects of biofeedback-induced relaxation training on locus of control and on five factors of self-concept in the school setting as measured by the Dimensions of Self-Concept (DOSC) among 56 hyperactive adolescent boys: (a) Level of Aspiration, (b) Anxiety, (c) Academic Interest and Satisfaction, (d) Leadership and Initiative, and (e) Identification vs. Alienation. Participants were randomly assigned to experimental (N = 28) and control (N = 28) groups. The study spanned a total of 13 weeks with the experimental treatment consisting of three sessions of biofeedback-induced relaxation training. Multivariate analysis of variance revealed significant differences (F = 2.55; df = 6, 49; p < .03) between the two groups. Post hoc procedures of univariate Fs and discriminant analysis revealed that the experimental group had significantly lower locus of control scores, indicating an internal locus of control orientation and higher Level of Aspiration scores. Although the treatment proved to be modestly effective, it was concluded that biofeedback-induced relaxation training affords promise for the sample investigated.

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