Declining birth rates worldwide are increasingly driven by social contagion—the spread of anti-natalist attitudes through social networks and media influence. When individuals observe peers choosing childlessness, they're more likely to follow suit, creating a cascading effect across generations. This phenomenon reveals how demographic shifts extend beyond economic factors to encompass psychological and social dimensions. Understanding these transmission mechanisms opens potential pathways to address population decline through targeted interventions addressing cultural narratives and social perceptions around parenthood.

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