Most conversations about emotional development center on mothers. But a growing body of research including a 2025 meta-analysis across hundreds of studies, points to something fathers do that is unique, irreplaceable, and largely unnamed in mainstream parenting. This is what dad's presence is actually building.

Most parents intervene in sibling fights to protect their kids. The research shows they may be accidentally removing the developmental event that matters most — the repair that follows the conflict, not despite it.