Innovations in generative AI to create human-like text, images, and videos can cause social, psychological, and political harms. Here, we explain how psychologists can mobilize their extensive theoretical and empirical resources to better anticipate, understand, and mitigate those harms. Innovations in generative AI can cause social, psychological, and political harms. This Comment explains how psychologists can mobilize their extensive theoretical and empirical resources to better anticipate, understand, and mitigate those harms.