P* Group, 2/9 – Morgan Sonderegger

At this week’s P group meeting, Feb 9 12pm,  Morgan will lead a discussion on the paper “A surprisal–duration trade-off across and within the world’s languages” (Pimentel, T. et al., 2021).

Abstract: While there exist scores of natural languages, each with its unique features and idiosyncrasies, they all share a unifying theme: enabling human communication. We may thus reasonably predict that human cognition shapes how these languages evolve and are used. Assuming that the capacity to process information is roughly constant across human populations, we expect a surprisal–duration trade-off to arise both across and within lan- guages. We analyse this trade-off using a cor- pus of 600 languages and, after controlling for several potential confounds, we find strong supporting evidence in both settings. Specifically, we find that, on average, phones are pro- duced faster in languages where they are less surprising, and vice versa. Further, we confirm that more surprising phones are longer, on average, in 319 languages out of the 600. We thus conclude that there is strong evidence of a surprisal–duration trade-off in operation, both across and within the world’s languages.

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