Let It Go, Let It Go (for the hundredth time): Why Your Child Watches the Same Movie on Repeat

You know every line by heart, the soundtrack plays on repeat in your head even in the shower, and you could draw the sets with your eyes closed. No, you haven’t joined a cinephile cult; you simply live with a child who has decided that Frozen or Ratatouille is the only program allowed at home this year. While this infinite repetition can test parents' nerves, it actually hides a fascinating and highly beneficial mechanism for the development of young children.