Abstract
This study analyzes the object relations theory by comparing Melanie Klein's personality development theory and Tadao Ando's internal and external spatial composition. The purpose of this research is to provide data for future architectural planning and design by identifying the characteristics of Ando's architectural spaces from the perspective of the object relations theory and to develop a methodology that helps directly apply the object relations theory to contemporary architectural theory. This research resulted in discovering that Ando's enclosed internal spaces are equivalent to the intermediate state that reaches the paranoid-schizoid phase after four months of infancy, which is a paranoid position according to Klein's personality development theory. Ando's opened internal and external spaces with glass curtain walls correspond with the paranoid position. Architectures with Ando's enclosed internal spaces integrated with architectural trails are comparable with the paranoid-schizoid position. Also, Ando's internal and external spaces, which correspond with the depressive state, are architectural works with inside and outside boundary spaces. Lastly, the development process of Ando's interior and exterior special composition is similar to the process of separating self and external objects in the infant's self-mental structure in Klein's personality development theory, except that the paranoid position and the stage of mental structure development after four months of infancy are in reverse order.