抄録
This study intends to make clear the effects of the number of persons in the room on the perception of volume and impression of interior-space. Subjects for a while experienced two experimental spaces which dimensions of floor spaces are different and which heights of ceiling are operated to make a difference of a definite quantity of volume in random order, and then they compared two volumes of spaces. At a time subjects rated which of spaces had felt more 'spacious' , 'oppressive' , 'stretching' , 'tight' , 'crowded'. The results were summarized as follows: 1)In case that the number of persons in the room is plural, subjects perceived the volume of interior-space more correct than perceiving by alone and the volume of the space of high ceiling height is tend to be overestimated. 2)The more the number of persons in the room to the heigher ceiling , the subjects felt more spaciousness and strechingnes. 3)The room that floor area is small is not tend to rate to be spacious, but is tend to rate to be oppressive, tight, crowded.
