Abstract
We developed virtual-space-centered index (VSC-Index) that comprised existing techno-centered index for university students. The high level of reliability and validity in the index was verified. It was found that the VSC was deteriorated by the interrelation of multiple media dependence, students of more the VSC had living irregularly, decreasing the volition of attending a lecture, and worrying in the human relations, as a result of the analysis. And, it decreased QOL a little. The low relation in the score of this VSC and QOL is a cause of the low-level subjective symptom and the shift to becoming heavily VSC. We emphasized the importance of self-diagnosis and consciousness of VSC-level by the index. It is expected to become one factor to improve QOL continuously.
