Among the Shins,
genealogy is determined from the father’s line. A joint family
system is practiced. The people are organized in terms of caste
and tribal circles and their kinship system is solid and active.
There are profound local terms used for various relationships.
Among the Shin tribes, the relationships are identified by two
main references: by breast milk and by blood. The blood means father
and the breast milk means those relationships that are established
with regard to other women. The terminology of relationships exists
both in writing and in oral form. There is diversity in the oral
terminology used in daily life and there is some complexity also
in certain relationship terms. They help understand the distinction
in ages, the scope of communal obligations to one's relatives and
their limitations, their duties and restrictions on account of the
constructive liaisons found in the joint family system.
The internal domestic management and arrangements are in the hands
of the oldest woman at home. She can be either a mother-in-law or
a wife of an elder brother. The external matters are in the hands
of the head of the household i.e. a man. 
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