Mopreet Pabla

1 Introduction Judgments about which events are possible change with age and in a surprising way. Children are widely believed to be more imaginative and prone to fantastical thinking than adults, and therefore likely to see a wider range of events as possible (see Shtulman 2023 and Woolley and Ghossainy 2013 for discussion). But this belief is wrong; young children deem many possible events impossible and only come to see these events as possible with development.