The monograph is the result of scientific and practical research of the team of authors of the Moscow State University, leading its history since the 80s of the twentieth century and focused on the analysis of the intrafamily unity of spouses. The basis is based on the current sociological and demographic study, which was attended by about 2,500 respondents from different regions of the Russian Federation. The uniqueness of the study lies in the use of the paired survey methodology, which allows you to analyze not only the individual responses of the survey participants, but also compare them with the opinion of the family M. The publication is intended for sociologists, research scientists who are interested not only in family phenomena, but also in methodological issues in the study of value orientations and attitudes of the population.