of construction probability on word durations during spontaneous incremental sentence production

In a series of seven studies, this paper examines acoustic characteristics of the spontaneous speech production of the English dative alternation (gave the book to the boy / the boy the book) as a function of the probability of the choice between alternating constructions. Probabilistic eects on the acoustic duration were observed in the acoustic signal at the choice point (the rst word that commits the speaker to one of the alternatives), before the choice point, but not after the choice point. These ndings speak in favor of the simultaneous operation of production mechanisms consistent with both informationsmoothing theories and availability-based models of speech production: they are incompatible with a number of competing theoretical accounts. Finally, we outline the statistical modeling procedure of multimodel inference suitable for addressing our multiple working hypotheses and the ultimate question of the explanatory role of probability.