Abstract
This study attempted to compare the differences of function between personal ibasho (sense of interpersonal rootedness) and social ibasho from the viewpoint of its relation to mental health. Meanwhile, the meaning of ibasho is studied. University students (55 men and 83 females) were required to complete a questionnaire on degree of securing personal ibasho, degree of securement of social ibasho, authenticity, feelings of being necessary to someone and psychological well-being. The results were as follows: (1) Well-being was related to degree of social ibasho, while not to degree of personal ibasho. It was suggested that the two were functionally different. (2) More authenticity and more feelings of being necessary to someone were related to higher degree of securement of social ibasho, but not to higher degree of securing of personal ibasho. It was pointed out in the field of education and clinical psychology that social ibasho is related to authenticity and feelings of being necessary to someone.
