What is family solidarity, and how can it affect a culture?
What do you think family solidarity is?
I believe that family solidarity is the unity and support the family members provide for each other in a household. However, I'm not sure if that is correct, and I can not comprehend the correlation between the lack of family solidarity and culture.
Yes, that's correct -- as far as you went. Family solidarity includes a close relationship with those not in your household. It includes aunts, uncles, first and second and third cousins, as well as ancestors. A culture that has strong family solidarity ties usually has the extended family as the first social ties. Often that means hostility toward other family or tribal groups.
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So, a lack of family solidarity in a culture or in a community results in a loss of the true aspects of a culture? Like the meanings and values of a tradition or custom?
No. I think all cultures have a degree of family solidarity. Most of us in the U.S. have a solidarity with close family members, but not usually with more distant relatives. We tend to feel a solidarity toward work mates, class mates, neighbors, fellow club members, etc.
It's different from cultures that emphasized solidarity with an extended family.