In distance education, there is no precedent for research of debate that can be eye contact. In this research, 5 learning environments, the eye-contact type and former (non-eye-contact) type systems of distance learning through Video Conferencing System (screen size 15 and 30 inches), and the real (face-to-face) class, were compared. Number of remarks, effective remarks and learning behavior factor were acquired from each class, and analysis of variance, covariance structure analysis was executed. As a result, in the number of effective remarks, there is no difference between eye-contact type and the real class, and it has decreased in former type. In eye-contact type and the real class, the learned behavior that raises learning effects most is “verbal communications”. In former type, the decrease in the learning effect by “getting tired, relaxation” is remarkable. The strategy that draws out “verbal communications”, “non-verbal communications”, “attention of eye” amplification of screen size, is necessary to control the decrease in the learning effect.
