Is it or isn't it: Listeners make rapid use of prosody to infer speaker meanings

摘要

A visual world experiment examined the time course for pragmatic inferences derived from visual context and contrastive intonation contours. We used the construction It looks like an X pronounced with either (a) a H* pitch accent on the final noun and a low boundary tone, or (b) a contrastive L + H* pitch accent and a rising boundary tone, a contour that can support contrastive inference (e.g., It LOOKS_(L+H*) like a zebra_(L-H%...) (but it is not)). When the visual display contained a single related set of contrasting pictures (e.g. a zebra vs. a zebralike animal), effects of LOOKS_(L+H*) emerged prior to the processing of phonemic information from the target noun. The results indicate that the prosodic processing is incremental and guided by contextually-supported expectations. Additional analyses ruled out explanations based on context-independent heuristics that might substitute for online computation of contrast.