Presupposition projection in quantified sentences C. Bill 1 , J. Zehr - - PowerPoint PPT Presentation

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Presupposition projection in quantified sentences C. Bill 1 , J. Zehr - - PowerPoint PPT Presentation

Presupposition projection in quantified sentences C. Bill 1 , J. Zehr 2 , L. Tieu 3 , J. Romoli 4 , F. Schwarz 2 1 Macquarie University, 2 University of Pennsylvania, 3 LSCP-ENS-CNRS, 4 Ulster University SALT 26 The University of Texas at Austin


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SLIDE 1

Presupposition projection in quantified sentences

  • C. Bill1, J. Zehr2, L. Tieu3, J. Romoli4, F. Schwarz2

1Macquarie University, 2University of Pennsylvania, 3LSCP-ENS-CNRS, 4Ulster University

SALT 26 The University of Texas at Austin

Thursday, May 12, 2016

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Introduction Background Adults Experiment Children Experiment Conclusions

Presupposition Projection

Presuppositions... (1) Bear won the race Bear ran the race

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SLIDE 3

Introduction Background Adults Experiment Children Experiment Conclusions

Presupposition Projection

Presuppositions... (1) Bear won the race Bear ran the race ... tend to project: (2) Bear did not win the race (3) Did Bear win the race? (4) It’s possible that Bear won the race Bear ran the race

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Introduction Background Adults Experiment Children Experiment Conclusions

Quantified sentences

Presupposition projection in quantified sentences is still very controversial (5) None of the bears won the race

  • a. ?→ At least one of the bears ran
  • b. ?→ All of the bears ran

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SLIDE 5

Introduction Background Adults Experiment Children Experiment Conclusions

Quantified sentences

Presupposition projection in quantified sentences is still very controversial (5) None of the bears won the race

  • a. ?→ At least one of the bears ran
  • b. ?→ All of the bears ran

How do presuppositions project in quantified sentences?

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SLIDE 6

Introduction Background Adults Experiment Children Experiment Conclusions

Suspendability

Presupposition projection is not always visible: it is possible to suspend it (6) Bear did not win the race... he didn’t even run! a. ≈ It’s not the case that Bear ran and won

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Introduction Background Adults Experiment Children Experiment Conclusions

Suspendability

Presupposition projection is not always visible: it is possible to suspend it (6) Bear did not win the race... he didn’t even run! a. ≈ It’s not the case that Bear ran and won (7) None of the bears won the race... none of them even ran! a. ≈ There is no bear that both ran and won

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SLIDE 8

Introduction Background Adults Experiment Children Experiment Conclusions

Projection from None

Three candidate readings for (8): (8) None of the bears won the race a. existential: At least one of the bears ran and none of them won. b. universal: All of the bears ran and none of them won. c. presuppositionless: None of the bears both ran and won. Our goals: test whether we observe each of these readings shed light on their status (are they basic? derived?) 2 experiments: with adults: suggests all three readings do exist with children: suggests universal is basic

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Introduction Background Adults Experiment Children Experiment Conclusions

Previous Studies

Chemla 2009, Evidence for universal reading

Inference task, testing the universal reading:

Know “None of these 10 students knows that he is lucky.” suggests that: Each of these 10 students is lucky. No? Yes? All “None of these 10 students missed all of their exams.” suggests that: Each of these 10 students missed some of their exams. No? Yes?

More than 80% ‘yes’ for know, significantly higher than all. Evidence that a universal reading exists

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Introduction Background Adults Experiment Children Experiment Conclusions

Previous Studies

Sudo, Romoli, Fox and Hackl, 2011, Evidence for non-universal reading

TVJT (assumption: universal presupposition→rejection):

None of these three circles have the same color as both of the squares in their own cell.

Half of the speakers accepted the description, even though the left circle has only one square in its cell. Evidence that non-universal reading exists

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Introduction Background Adults Experiment Children Experiment Conclusions

Previous Studies

Geurts and van Tiel, 2015, Evidence for non-universal reading

TVJT (assumption: universal presupposition→rejection): No circle has the same color as the square to which it is connected. True False Don’t know Acceptance > 92%, despite there being a circle with no square Evidence that non-universal reading exists

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Introduction Background Adults Experiment Children Experiment Conclusions

Previous Studies

Summary

Summary of the previous results Chemla, 2009: Existence of universal reading Sudo et al., 2011; Geurts and van Tiel, 2015: Existence of non-universal readings Interim Conclusions No clear experimental evidence for existential readings: Sudo et al., 2011 and Geurts and van Tiel, 2015 do not distinguish between existential and presuppositionless readings.

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Goals and Procedure

We tested for the existence of: the universal reading the existential reading the presuppositionless reading Covered-Box paradigm (Huang, Spelke and Snedeker, 2013), ≈ rejection task, successfully used to investigate presuppositions

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Context

In the morning race, these three bears did really well, and in the end

  • ne of them won. I thought they would do well later in the day as well,

but... [Audio]

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SLIDE 15

Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

TrueControl

TrueControl condition (2 repetitions) (All bears ran but none won) None of the bears won the afternoon race [Audio]

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

FalseControl

FalseControl condition (2 repetitions) (All bears ran and one of them won) None of the bears won the afternoon race [Audio]

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

OnlySome

OnlySome condition (4 repetitions) (2 out of 3 bears ran and lost) None of the bears won the afternoon race [Audio] Universal → Covered picture (× all bears ran) Existential → Visible picture ( at least 1 bear ran) Presuppositionless → Visible ( no presupposition)

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

NoRunner

NoRunner condition (4 repetitions): (No bear ran the race) None of the bears won the afternoon race [Audio] Universal → Covered picture (× all bears ran) Existential → Covered picture (× at least 1 bear ran) Presuppositionless → Visible ( no presupposition)

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

General Predictions

None of the bears won the race TrueControl OnlySome NoRunner FalseControl Universal Existential Presuppositionless TrueControl

  • OnlySome

×

  • NoRunner

× ×

  • FalseControl

× × ×

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SLIDE 20

Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Universal-Specific Predictions

Universal Existential Presuppositionless TrueControl

  • OnlySome

×

  • Presupposition projection in quantified sentences

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Existential-Specific Predictions

Universal Existential Presuppositionless OnlySome

×

  • NoRunner

× ×

  • Presupposition projection in quantified sentences

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Presuppositionless-Specific Predictions

Universal Existential Presuppositionless NoRunner

× ×

  • FalseControl

× × ×

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SLIDE 23

Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Details

4 true and 4 false additional control conditions

None of the bears were on the couch during the afternoon race None of the bears ran in the afternoon race (final trials)

Exclusion criterion: < 75% accuracy on all the controls 42 out of 48 subjects Mixed-effect logistic regression models on visible vs covered choice (participants and items as random effects)

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Introduction Background Adults Experiment Children Experiment Conclusions

Results (N=42)

Controls

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

Good accuracy on controls: covered in false, not in true Participants understood the task and the descriptions

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Introduction Background Adults Experiment Children Experiment Conclusions

Results (N=42)

OnlySome: evidence for universal

None of the bears won the race

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

**

(Rate of ×Covered choices)

Universal Existential Presuppositionless TrueControl

  • OnlySome

×

  • Significant contrast: only explained by universal

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Introduction Background Adults Experiment Children Experiment Conclusions

Results (N=42)

OnlySome vs. NoRunner: evidence for existential

None of the bears won the race

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

*

(Rate of ×Covered choices)

Universal Existential Presuppositionless OnlySome

×

  • NoRunner

× ×

  • Significant contrast: only explained by existential

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SLIDE 27

Introduction Background Adults Experiment Children Experiment Conclusions

Results (N=42)

NoRunner: evidence for presuppositionless

None of the bears won the race

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

***

(Rate of ×Covered choices)

Universal Existential Presuppositionless NoRunner

× ×

  • FalseControl

× × ×

Significant contrast: only explained by presuppositionless

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Introduction Background Adults Experiment Children Experiment Conclusions

Results (N=42)

Summary

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

Evidence for Universal: contrast TrueControl vs OnlySome Existential: contrast OnlySome vs NoRunner Presuppositionless: contrast NoRunner vs FalseControl

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

Two types of theories

There are two broad types of projection theories

1 Those that predict universal projection (Heim 1983,

Schlenker 2008, a.o.)

2 Those that predict existential projection (Beaver 1994, van

der Sandt 1992, a.o.) How to account for the three readings?

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

1) Universal projection + Weakening

1) Universal-projection-only Universal = directly from universal projection Existential = reanalyzed as a weakened reading, e.g. through domain restriction (≈ none [who ran] won) Presuppositionless = local accommodation or other

  • ption (e.g. ignore the presupposition)

Required assumption: weakening option (e.g. domain restriction)

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

2) Existential projection + Strengthening

2) Existential-projection-only Existential = directly from existential projection Universal = reanalyzed as a strengthened meaning, e.g. through a preference for homogeneity (Mandelkern, Ms.) Presuppositionless = local accommodation or other mechanism (e.g. ignore the presupposition) Required assumption: strengthening option (e.g. homogeneity)

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

3) Existential + Universal projection

3) Existential + universal projection Existential = directly from existential projection Universal = directly from universal projection Presuppositionless = local accommodation or other mechanism (e.g. ignore the presupposition) Required assumption re. OnlySome vs. NoRunner: the more true readings a description has, the more it tends to be accepted (cf. Spector & Chemla 2011)

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Introduction Background Adults Experiment Children Experiment Conclusions

Extending to children

Motivations

All 3 accounts have possible extensions to account for the data Children can potentially help us discriminate between the approaches

If one reading is basic in adults and the other is complex Children might lack the non-basic, more complex one

Same covered box design, previously used to investigate presuppositions in children by Bill et al. (2015)

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Goal and Participants

Goal: Test whether children lack a non-basic reading, and whether they do project presuppositions in quantified sentences Same design as the adult experiment 22 children ranging from 4;00 to 5;10 (mean age: 5;04) Same exclusion criteria as for adults (19 out of 22) Macquarie University

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Results (N=19)

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

Condition Adults Kids Children

Children behave the same as adults on controls: they understand the task

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Results (N=19)

None of the bears won the race

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

Condition Adults Kids

***

Children

(Rate of ×Covered choices)

Universal Existential Presuppositionless TrueControl

  • OnlySome

×

  • Only Universal could make participants reject OnlySome

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Results (N=19)

None of the bears won the race

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

Condition Adults Kids

***

Children

(Rate of ×Covered choices)

Universal Existential Presuppositionless NoRunner

× ×

  • FalseControl

× × ×

Only Presuppositionless makes NoRunner acceptable

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Introduction Background Adults Experiment Children Experiment Conclusions

Experiment

Results (N=19)

None of the bears won the race

0% 25% 50% 75% 100% TrueControl OnlySome NoRunner FalseControl

Condition Choice of Covered

Condition Adults Kids

n.s.

Children

(Rate of ×Covered choices)

Universal Existential Presuppositionless OnlySome

×

  • NoRunner

× ×

  • No difference between OnlySome and NoRunner in children:

no evidence for Existential

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

Universal projection + Weakening

Lack of evidence for Existential in children

Most directly consistent with basic universal projection and Existential as a weakened, derived reading (in adults) Late adult-like weakening (e.g. domain restriction)

The alternative hypotheses face unresolved issues

Existential projection + universal by strengthening: Unlike adults, children always go with strengthening: why? Parallel existential and universal projections: Children systematically go with universal projection: why?

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

Domain Restriction in children

Children have been reported to differ from adults when it comes to domain restriction (e.g. Rakhlin 2007, see literature

  • n acquisition of plural definites for related considerations)

The three bears in the picture form a natural, salient group (hence universal as a basic presuppositional reading) Defining a subset to restrict to involves the complex interaction of several factors (quantifier, presupposition, ...) Children are known to be non-adult like in other multi-factorial phenomena (see e.g. Gualmini et al. 2008 on QUD)

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

Domain Restriction in adults

Follow-up on adults with explicit domain of quantification

Test sentence: None of these three bears won the race Same results as for None of the bears won the race: evidence for all three readings (crucially, existential)

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

Domain Restriction in adults

Follow-up on adults with explicit domain of quantification

Test sentence: None of these three bears won the race Same results as for None of the bears won the race: evidence for all three readings (crucially, existential)

Geurt and van Tiel (2015) also tested with an explicit domain

Test sentence: Each of these 7 circles has the same color as the square to which it is connected Accepted even with only 2 circles connected to a square

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

Domain Restriction in adults

Follow-up on adults with explicit domain of quantification

Test sentence: None of these three bears won the race Same results as for None of the bears won the race: evidence for all three readings (crucially, existential)

Geurt and van Tiel (2015) also tested with an explicit domain

Test sentence: Each of these 7 circles has the same color as the square to which it is connected Accepted even with only 2 circles connected to a square

Seems like adults can override an explicit domain

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Introduction Background Adults Experiment Children Experiment Conclusions

Discussion

Children and Presupposition Suspendability

Unlike Bill et al. (2015), we often observed suspension

Bill et al. (2015) Our experiment

“Bear didn’t win the race” “None of the bears won the race” Why are children less prone to project in our case? Quantificational sentences are more complex than non-quantificational negative sentences Children sometimes ignore the presupposition When they do not ignore it, they show a universal reading

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Introduction Background Adults Experiment Children Experiment Conclusions

Conclusion

Conclusions Evidence from adults that all three readings exist: universal, existential and presuppositionless Theories have to predict each of these readings

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Introduction Background Adults Experiment Children Experiment Conclusions

Conclusion

Conclusions Evidence from adults that all three readings exist: universal, existential and presuppositionless Theories have to predict each of these readings Children only provide evidence for universal inferences Probably the basic reading between the two

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Introduction Background Adults Experiment Children Experiment Conclusions

Conclusion

Conclusions Evidence from adults that all three readings exist: universal, existential and presuppositionless Theories have to predict each of these readings Children only provide evidence for universal inferences Probably the basic reading between the two Under this view, presupposition-driven domain restriction Would be treated differently by children and adults Adults can even override domain information that is explicitly expressed, e.g. by numerals

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Introduction Background Adults Experiment Children Experiment Conclusions

Conclusion

Conclusions Evidence from adults that all three readings exist: universal, existential and presuppositionless Theories have to predict each of these readings Children only provide evidence for universal inferences Probably the basic reading between the two Under this view, presupposition-driven domain restriction Would be treated differently by children and adults Adults can even override domain information that is explicitly expressed, e.g. by numerals Presuppositionless readings + Bill et al. (2015) suggest that children can ignore the presupposition

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Introduction Background Adults Experiment Children Experiment Conclusions

Conclusion

Future Directions Manipulate various factors to test for domain restriction in children Explicit domain of quantification (like the adult follow-up) Visual stimuli (running bears in different colors) Look at triggers with different projection strengths (stop, again, ...)

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Introduction Background Adults Experiment Children Experiment Conclusions

Acknowledgments

Thank you

And thanks to... Our funders NSF grant BCS-1349009 to Florian Schwarz European Research Council under the European Unions Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement n.313610 ANR-10-IDEX- 0001-02 PSL* and ANR-10-LABX-0087 IEC The participants of the Amsterdam Colloquium and DGfS 2016 Emmanuel Chemla, Stephen Crain, and Danny Fox (discussion) Dorothy Ahn (illustrations)

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Introduction Background Adults Experiment Children Experiment Conclusions

References

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35–60.

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pragmatic enrichment.” Language and Cognitive Processes, 38(3), pp 241–260.

  • Geurts, B. and van Tiel, B. 2015. “When all the five circles are four: new exercises

in domain restriction.” Topoi, pp 1–14.

  • Gualmini, A., Hulsey, S., Hacquard, V., Fox, D. 2008 “The QuestionAnswer

Requirement for scope assignment.” Natural Language Semantics, 16, pp 205–237.

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WCCFL 2, pp 114–125.

  • Huang Y., Spelke E. and Snedeker, J. 2013. “What exactly do number words

mean?” Language Learning and Development, 9(2), pp 105–129.

  • Rakhlin, N. 2007. “A new pragmatic account of quantifier-spreading.” Nanzan

Linguistics: Special Issue 3, Vol. 1, pp 239–282.

  • Sudo Y., Romoli J., Fox D. and Hackl M. 2011. “Variation of presupposition

projection in quantified sentences.” Proceedings of the Amsterdam Colloquium 2011,

  • pp. 210–219.

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