Another related question is, what is circular causality in the context of family social work?

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Circular causality places ongoing interaction patterns within a context of patterned family relationships. In working with a family, the social worker should look for circular patterns of interaction between family members. For example, a parent shows interest in the child’s homework, and the child then explains the assignment to the parents. This is likely to result in an ongoing circular and reciprocal interaction pattern. The parent continues to take an interest in and offer support regarding the child’s homework; the child feels supported and rewarded and may make an extra effort when doing homework and ask the parent for help, thus reinforcing the pattern.