The Relaxation Inventory: self-report scales of relaxation training effects

The development of a self-report measure to assess the effects of relaxation training was examined. A rigorous statistical method of scale construction consisting of a modification of the scale discrimination technique was employed, resulting in a 45-item questionnaire representing three orthogonally derived scales. The three scales, Physiological Tension, Physical Assessment, and Cognitive Tension, demonstrated adequate internal consistency with KR20 reliability coefficients of .89, .95, and .81, respectively. In a second study of predictive validity, 40 individuals were randomly assigned to one of four conditions: relaxation training, tension inducement, pre-postcontrol, or postcontrol. Univariate analysis of variance indicated significant findings for each of the three dimensions of the inventory. The Physiological Tension Scale detected significant increases in tension following tension inducement, whereas the Physical Assessment Scale and Cognitive Tension Scale detected increases in relaxation following relaxation training. Recommendations were made for future research on the inventory.