Short abstract:
When listeners interpret sentences based on plausibility rather than on the
perceived syntactic structure, does this reflect top-down influences on
their message-level interpretations while leaving the syntactic
representations intact, or can plausibility influence both interpretations
and syntactic parses? To investigate this, we assessed listeners’
interpretations of (in)plausible sentences with comprehension questions and
used structural priming as an implicit measure of listeners’
representations of the sentence syntax. Listeners showed robust syntactic
priming effects for sentences they interpreted according to the literal
syntax, but no syntactic priming when their interpretations were instead
based on plausibility. This suggests that rational integration of noisy
input and prior expectations not only affects the interpretation of the
message, but also affects the underlying syntactic representation.