Requesting plays a key role in human communication. One can request the same thing in multiple ways (e.g., "Pass the salt" vs. "Could you pass the salt?"). How do speakers determine which request form to produce? And how does this choice affect a recipient's evaluation of a request? Previous analyses of naturalistic…

People often speak ambiguously, as in the case of "indirect requests." Certain indirect requests are conventional and thus straightforward to interpret, such as "Can you turn on the heater?", but others require substantial additional inference, such as "It's cold in here." How do comprehenders make inferences about a…