Abstract
In this paper I intend to clarify the difference between Ariga's and Kitano's theory concerning understanding family and “Ie”. As it is generally known, we can see difference between two sociologists in the interpretation of Toda's family theory. When we review the controversy between Ariga and Kitano, it is necessary to go back the difference of conception between Toda and Ariga. Between two theories there is an important difference. Toda presented the conception of the “small family” and gave it the primary status. On the other hand, Ariga characterized the Japanese family as a large family and defined it as “Ie”.
