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The Science of Mother-in-Law Conflict: Why It's Structural, Not Personal

Mother-in-law and daughter-in-law tension is one of the most common — and most misread — family frictions: surveys suggest roughly 60% of these bonds carry real strain. Decades of research point away from 'she's just difficult' and toward something more structural: two women who both hold a primary maternal position with the same man, without a clear social script for how to share it. Communication research shows expectations and attributions do more damage than any single comment; evolutionary researchers point to differing degrees of genetic stake in the couple's children; and cross-cultural data show the strain gets worse, not better, wherever custom puts a wife under her mother-in-law's roof. Here's what the actual studies say.