Abstract
This article proposes two hypothetical psychological frameworks, namely full-size environmental cognition and objectified environmental cognition, for human travel to distant points. The spatial properties of an environment are measured by the human scale, and are then taken into the sensory-motor space. This realistic cognitive process is named full-size environmental cognition in this article. The process may be symbolized by a psychological elastic string that expands and contracts in proportion to the distance and the direction between the human body and its surrounding objects. Through the process of objectifying an environment, the spatial properties of the environment are separated from the body. The result of this makes symbolic use of environmental information. The process is named objectified environmental cognition. Human travel is composed of the interaction of these two psychological frameworks, as exemplified by Micronesian navigation and blind people's orientation and mobility.
