What is the duty of a sociologist?

Question

psychology,philosophy,anthropology,what are thier relationship with sociology

Answer 1

They are busy giving out flawed advice.

Answer 2

Sociologists generally look at two related things: society and its inner and outer workings; and people and our interactions with each other and with society as a whole (ie. with the apparati or processes that help society to (dis)function).

This would be the role of a sociologist more than a 'duty' (if you mean 'duty' in the sense of morality or ethics).

Answer 3

a sociologist doesn't have a duty but he studies the development of society as is true for the other sciences ie. to study development of.