hear no evil or speak no evil: lengthening of phonological ......hear no evil or speak no evil:...
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Hear no evil or speak no evil:Lengthening of phonological competitors
Andrés Buxó-LugoCassandra L. JacobsDuane G. Watson
CUNY 2018, Davis, California
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Speakers’ choices are dynamic
• Context modulates speakers’ choices• Phonetics• Lexical form (chimp, chimpanzee) (Mahowald et al., 2014; Cohen Priva, 2017; Jaeger,
Furth, & Hilliard, 2012)• Referring expressions (cat, kitten) (Roelofs, 1992)
• Argument order (dative alternation) (Ferreira, 1996)
• Syntactic reduction (Ferreira & Dell, 2000)
• Prosody
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Prosody is dynamic
• Conceptual, phonological, and discourse factors• Word frequency (Gahl, 2008)
• Linguistic predictability (Bell et al., 2009)
• Duration• Reduction (Galati & Brennan, 2010; Jacobs, Yiu, Watson, & Dell, 2015)
• Lengthening (Watson, Buxó-Lugo, & Simmons, 2015; Gahl, 2008)
Note: Cats not scaled according to observed effect sizes 3
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Why is prosody dynamic?
• Incidental: Facilitation or interference affect the planning process (Kahn & Arnold, 2012; Sevald & Dell, 1994; Yiu & Watson, 2015)
• Intentional: Speakers tailor their speech to the context to efficiently transfer information or confusability (Buz, Jaeger, & Tanenhaus, 2016; Buxó-Lugo, Toscano, & Watson, in press)
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Incidental lengthening
• Easy things are shorter• Referents that are repeated (Kahn, Arnold, & Pacani, 2012)
• Repetition is easy• Word repetition, even for new referents (Lam & Watson, 2014)• pi/pie (Jacobs et al., 2015)
• Words that are more accessible tend to be reduced
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Incidental lengthening
• Words that are harder are longer• Uncommon, unpredictable words• Phonologically similar words (phonological competitors) create
interference (Sevald & Dell, 1994; Yiu & Watson, 2016)
• Semantically similar words (Fink, Goldrick, & Oppenheim, 2018)
• Slowing down may “buy time” for successful production
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Strategic accounts
• Informativity (Aylett & Turk, 2004; Cohen Priva, 2008; Seyfarth, 2016)
• Perspective-taking or audience design• Speakers recognize confusability and/or
information content of their names for referents and adjust
• Speakers change productions based on interlocutor behavior (Buz, Jaeger, & Tanenhaus, 2016)
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Both accounts of lengthening
• Mostly predict the same behavior• Listeners confused ≈ producers experience interference• Third account: Auditory memory component
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Role of memory for what has been said
• Someone producing a word aloud matters for reduction• Bard et al., (2000)• Kahn & Arnold (2015)• Jacobs, Yiu, Watson and Dell (2015)
• Speakers have a memory for what has been named (Galati & Brennan, 2010; Jacobs, Yiu, Watson, & Dell, 2015)
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What makes speakers lengthen phonological competitors?• Incidental
• Lengthen because they experience interference?• Strategic
• Lengthen because words are confusable to listeners?• Memory
• Lengthen because speakers remember competitors that have been said aloud?
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Event description task
Participant says: The hand shrinks 11
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Event description task
Participant says: The hat flashes 12
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Conditions
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PRIME
TARGET
(0) No cohort present
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Conditions
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PRIME
TARGET
(1) Cohort present but unnamed
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Conditions
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PRIME
TARGET
(2) Cohort prime, speaker hears(3) Cohort prime, speaker names
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Conditions
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PRIME PRIME PRIME
TARGET
(0) No cohort present (1) Cohort present but unnamed (2) Cohort prime, speaker hears(3) Cohort prime, speaker names
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Predictions: Incidental
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PRIME PRIME PRIME
TARGET
(0) No cohort present (1) Cohort present but unnamed (2) Cohort prime, speaker hears(3) Cohort prime, speaker names
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Predictions: Strategic
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PRIME PRIME PRIME
TARGET
(0) No cohort present (1) Cohort present but unnamed (2) Cohort prime, speaker hears(3) Cohort prime, speaker names
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Predictions: Memory
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PRIME PRIME PRIME
TARGET
(0) No cohort present (1) Cohort present but unnamed (2) Cohort prime, speaker hears(3) Cohort prime, speaker names
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Experiment 1 results
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Experiment 1 results
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Cohort absent Cohort present but unnamed Cohort heard first Cohort namedCondition
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Experiment 1 results
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Cohort absent Cohort present but unnamed Cohort heard first Cohort namedCondition
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Experiment 1 summary
• Speakers only significantly lengthened targets (e.g. hat) after a competitor had been named out loud (e.g. hand)• Not just whenever there were similar-sounding referents• Even when another person had said the word
• Speakers may not have even known competitor was there• bat…flying bat (Ferreira & Griffin, 2001)
• butterfly…small one (Brown-Schmidt & Konopka, 2006)
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Experiment 2
• Prior to start of animations, participants mouth in inner speech every item in the display clockwise from top left (e.g. Oppenheim & Dell, 2008)
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Experiment 2 results
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Cohort absent Cohort present but unnamed Cohort heard first Cohort namedCondition
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Experiment 2 results
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Cohort absent Cohort present but unnamed Cohort heard first Cohort namedCondition
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Experiment 2 summary
• As in Experiment 1, speakers only consistently lengthened when a competitor’s prime was named out loud• Not just whenever there were similar-sounding referents• Even when another person had said the word
• Despite retrieving the words’ phonological forms
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Problems for production interference accounts
• Lengthening of words speakers heard first• Modifications to production-
specific theories
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Problems for strategic accounts
• Existence of similar-sounding referents in the environment does not always lead to lengthening• Task demands/strategizing? (Buz, Jaeger, & Tanenhaus, 2016)
• Discourse status of referents• The world is not enough• Audience design by proxy? (Jacobs et al., 2015)
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An auditory memory account of lengthening
• So what “counts”? • Speakers can use their own memory as a guide about
whether to lengthen words (Jacobs et al., 2015)
• We need models that can remember what’s been said
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Thanks!
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Experiment 1 + 2 results
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Cohort absent Cohort present but unnamed Cohort heard first Cohort namedCondition
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Cohort absent Cohort present but unnamed Cohort heard first Cohort namedCondition
Targ
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Experiment 2Experiment 1