Under the standard Lewis–Stalnaker view, accommodation is a pragmatic solution to a coordination problem. Accommodation processes are triggered when a speaker uses an expression that requires that the conversational background contain some hitherto unmentioned information. Accommodation, then, is not automatic; it is a process addressees engage in to adjust to the course of conversation. However, it is not entirely straightforward to predict when or which presuppositions will be accommodated. This issue is complicated by the existence of so‐called
informative presuppositions
, which carry new and at‐issue information. On the one hand, recent crosslinguistic and experimental research programs suggest that acceptability of presupposition accommodation varies relative to the kind of presupposition trigger involved. On the other hand, there exists a whole tradition in experimental social psychology which suggests that presuppositions are automatically accommodated, even though they are false.