Abstract
The purpose of this study is to analyze the relation of informational space and lost-behaviors on wayfinding behaviors which are the problem solving processes to move to a room getting information. The factors to repress and cause lost-behavior (selecting wrong route, and backtracking) are made clear by a discriminant analysis of experimental subjects' wayfinding behaviors in four types of informational space; corridor type without map-sign and directional signs, corridor type with map-sign and directional signs, hall type without map-sign, and hall type with map-sign,
