The Syntactic Pasts of Nouns Shape Their Prosodic Future: Lexico-Syntactic Effects on Position and Duration

Phrasal prosody is often viewed as a level of linguistic representation at which the phonetic profile of an utterance varies independently of the lexical items it contains. For example, the same word, when produced at the edges of prosodic phrases, will take longer to produce than when it is produced within the edges of a phrase. Lengthening effects have also been found for words when placed in different syntactic or lexical contexts. Recent evidence suggests that lexico-syntactic information-for example, the global syntactic distributions of words-affects phonetic duration in production, irrespective of other factors. The present study asks whether these lexico-syntactic effects on duration interact with prosodic position within the phrase. Specifically, we ask whether (a) the lexico-syntactic information of a word determines its prosodic position, and (b) whether, beyond any categorical effects on positioning, lexico-syntactic factors affect duration within prosodic positions. We address these questions using the Santa Barbara Corpus of Spoken American English. We operationalize syntactic information as the diversity and the typicality of the syntactic distributions of nouns based on a dependency parse of the British National Corpus. We find that earlier positions in the prosodic phrase generally prefer words with higher syntactic diversity. In addition, diversity and typicality modulate duration more reliably in nonfinal positions. Together, our results point to an early influence of lexico-syntactic considerations on prosodic planning.