Lots of previous work on generosity has shown that reciprocal generosity is typical and expected. But this has traditionally been studied in the context of economic games, where people evaluate numerical payoffs (3/11)

Here, we instead showed people naturalistic scenarios describing a variety of everyday generous acts (like buying someone coffee). With this small amount of extra context, people did *not* expect reciprocal (alternating) actions, over one person being repeatedly generous… (4/11)