抄録
On the basis of a description by Murayama and Nojima (1977), a scale was constructed to measure the developmental phase of the encounter group process. Administered to 105 encounter group facilitators. Principal component analysis of the data resulted in the identification of one factor. The evaluation of a group as a whole and the rating of each item were found to be consistent. The rating of a high evaluated group was higher than that of a low evaluated group. These results confirmed the validity of the scale. The ratings by two judges of the same group were found to be significantly correlated. A test-retest (one year later) analysis yielded a reliability coefficient of 0.87, thus confirming the reliability of the scale.
