抄録
In this thesis,I will examine the "misunderstandings" and "deceptions" which are the basis upon which people basically agree to married couples having different family names. In particular, I will focus on how to read and understand the data contained in a public opinion poll on family laws conducted by the Office of the Prime Minister, while pointing out the same misinterpretations that are contained in the White Paper on Health and Welfare. In addition, I will introduce court cases that have actually taken place between married couples because they had different family names.