As a characteristic of step families, "boundary ambiguity" derives from which theoretical perspective?

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Boundary ambiguity, which refers to uncertainty or confusion about family roles, rules, and relationships, is a concept that derives from systems theory. According to this perspective, stepfamilies experience boundary ambiguity because they have to navigate different sets of family boundaries and norms from their previous families, which can lead to role confusion and increased conflict.

As a Characteristic of Step Families, "Boundary Ambiguity" Derives from Which