Abstract
In this paper we deal with the relation between man and building finishing materials as interface. As the case study for the cognitive engineering for architecture, we tried a few investigations about the frequency of children's touch on the building elements in some elementary schools. As the results, the following conclusions were obtained '. the finishing materials make the difference of the frequency ; a strong relation is recognized between children's postures, for example sitting or lying on the floor, and the floor finishing materials ; "affordance" proposed by Gibson, J. J. may exist in building finishing materials.
