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economic system of society, based on marriage or kinship and including the entire set 
of  existing  relationships  (between  husband  and  wife,  parents  and  children,  different 
generations). It develops due to the joint versatile activities of its members, in which 
both  the  needs  of  society  (the  physical  and  spiritual  reproduction  of  the  human 
personality ensuring the joint functioning of people in the sphere of personal life) and 
the individual are realized (Shimin, 1989). 
We believe that a family is a voluntary union of a man and a woman, based on the 
principle of reciprocity, love, and respect, to reproduce and raise offspring, which is the 
main unit for the construction and existence of society at a certain period of its historical 
development. 
Family as a social institution has the following characteristics: specific social roles 
(husband, wife, father, mother, child, etc.); a special form (official marriage); public and 
unspoken  norms  typical  of  family  members;  and  family  values.  In  Russian  doctrine, 
scholars  identify  three  functions  of  family  (reproductive,  educational,  and  economic) 
(Agaltsova et al., 2016). L.B. Schneider (2000)  identifies a wider range of functions. 
Schneider lists reproductive, economic, regenerative, educational, control, recreational, 
social,  and  psychotherapeutic  functions,  as  well  as  the  function  of  spiritual 
communication. In legal science, the essence of family and its constitutive features and 
functions  are  debatable.  As  a  rule,  the  emphasis  is  laid  on  marriage  registered  in 
accordance with the established procedure, consanguinity, and cohabitation. Legal facts 
are  consolidated  in  the  doctrine  that  entails  legal  consequences.  This  forms  a  circle 
between law and legislation. Even in the Soviet family law, the definition of family was 
given by listing the grounds for its emergence (based on marriage or kinship) and its 
inherent  characteristics  (an  association  of  persons  related  by  mutual  rights  and 
responsibilities,  mutual  moral  and  material  community  and  support,  the  birth  and 
upbringing of offspring, running a common household) (Vorozheikin, 1974). 
Article 1 of the Family Code of the Russian Federation of December 29, 1995 No. 
223-FZ  (State  Duma  of  the  Federal  Assembly  of  the  Russian  Federation,  1995) 
reproduces  the  constitutional  norm  on  the  protection  of  family  and  establishes  the 
provision that family legislation is based on the need to strengthen family. Along with 
the main provisions of  the code, it is not so  much about  family as  it is about family 
members (men, women, minors, disabled family members, etc.). Surprisingly, the core 
act of family legislation (the Family Code of the Russian Federation) does not contain 
the family concept. Moreover, the code is devoid of a conceptual apparatus. Therefore, 
many scholars do not enter discussions about the essence of family but simply reproduce 
well-known formulations in their scientific works and commentaries on legislation. 
Due to vague and ambiguous approaches to family as a social and legal institution, 
there are constant disputes in Russian doctrine regarding the need to consolidate such 
concepts as  family and marriage, as well as their derivatives. Less frequent disputes 
concern fixing the mandatory and optional characteristics of family and its functions. 
Many authors believe that it is unnecessary or difficult to define these concepts. M.V. 
Antokolskaya considers family an exclusively sociological and not legal phenomenon. In