What are the consequences of linguistic diversity for perception … · What are the consequences...
Transcript of What are the consequences of linguistic diversity for perception … · What are the consequences...
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Terry Regier
What are the consequences of linguistic diversity for perception
and thought?
UC BerkeleyNovember 6, 2018
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Terry Regier
Semantic typology and the Sapir-Whorf hypothesis in computational perspective
UC BerkeleyNovember 6, 2018
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Bowerman & Pederson, 1992; Levinson et al., 2003
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Bowerman & Pederson, 1992; Levinson et al., 2003
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Bowerman & Pederson, 1992; Levinson et al., 2003
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Bowerman & Pederson, 1992; Levinson et al., 2003
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Bowerman & Pederson, 1992; Levinson et al., 2003
Semantic typology
What category systems are found in the world’s languages, & why?
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Bowerman & Pederson, 1992; Levinson et al., 2003
Semantic typology
What category systems are found in the world’s languages, & why?
Sapir-Whorf hypothesis
Do native-language categories affect non-linguistic thought?
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My goal today
Triangulate in on these questions from three perspectives.
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My goal today
Triangulate in on these questions from three perspectives.
Language Cognition
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My goal today
Triangulate in on these questions from three perspectives.
Computation
Language Cognition
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Semantic typology
The Sapir-Whorf hypothesis
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Semantic typology
The Sapir-Whorf hypothesis
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Question: Do word meanings across languages reflect a universal conceptual repertoire – or wide cultural variation?
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Question: Do word meanings across languages reflect a universal conceptual repertoire – or wide cultural variation?
Existing evidence: Mixed – both universal tendencies, and cross-language variation.
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Question: Do word meanings across languages reflect a universal conceptual repertoire – or wide cultural variation?
Existing evidence: Mixed – both universal tendencies, and cross-language variation.
Claim: Systems of word meanings support efficient, informative communication. Accounts for universals & variation.
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communication quality
Central idea
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communication quality
Central idea
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communication quality
Central idea
Haspelmath 1999; Croft 2003; Hopper & Traugott, 2003, ...
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Central idea
This simple idea:
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Central idea
This simple idea:
1. Accommodates data from different semantic domains traditionally treated separately;
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Central idea
This simple idea:
1. Accommodates data from different semantic domains traditionally treated separately;
2. Explains several domain-specific generalizations from the literature.
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1. Color
2. Kinship, space, number
3. Words for snow
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1. Color
2. Kinship, space, number
3. Words for snow
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Paul Kay, Charles Kemp, Naveen Khetarpal, Naftali Tishby, Noga Zaslavsky
PNAS, 2007
Language, 2009
PNAS, 2018
1. Color
2. Kinship, space, number
3. Words for snow
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Color categories across languages
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Color categories across languages
Berinmo, Papua New Guinea
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Color categories across languages
Universals
Berinmo, Papua New Guinea
Sirionó, Bolivia
Jicaque, Honduras
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Color categories across languages
Universals Variation
Berinmo, Papua New Guinea Wobé, Ivory Coast
Sirionó, Bolivia
Jicaque, Honduras
Chavacano, Philippines
Karajá, Brazil
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Informative communication
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Informative communication
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Informative communication
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Informative communication
red
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Informative communication
red
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Words should have meanings that allow accurate mental reconstruction by listener of speaker’s intended meaning.
Informative communication
red
Jameson & D’Andrade, 1997
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)||()( lsDte KLReconstruction error for object t:
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)||()( lsDte KLReconstruction error over domain universe U:
Ut
tetnE )()(
Reconstruction error for object t:
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)||()( lsDte KLReconstruction error over domain universe U:
Ut
tetnE )()(
Reconstruction error for object t:
Need,usage-based
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)||()( lsDte KLReconstruction error over domain universe U:
Ut
tetnE )()(
Reconstruction error for object t:
Informative communication = low reconstruction error
Piantadosi et al., 2011; Fedzechkina et al., 2012; Baddeley & Attewell, 2009
Need,usage-based
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Optimal, n=3
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Optimal, n=3 Wobé, Ivory Coast
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Optimal, n=3 Wobé, Ivory Coast
Optimal, n=4 Culina, Peru/Brazil
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Optimal, n=3 Wobé, Ivory Coast
Optimal, n=4 Culina, Peru/Brazil
Optimal, n=5 Cayapa, Ecuador
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Optimal, n=3 Wobé, Ivory Coast
Optimal, n=4 Culina, Peru/Brazil
Optimal, n=5 Cayapa, Ecuador
Optimal, n=6 Buglere, Panama
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Explaining known constraints
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Explaining known constraints
Color terms in the world’s languages appear in a specific order:
Berlin & Kay 1969
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Explaining known constraints
Color terms in the world’s languages appear in a specific order:
This order is explained by informativeness:
Berlin & Kay 1969
…
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Abidji, Ivory Coast
Karajá, Brazil Cree, Canada
Gunu, Cameroon
Many languages don’t fit exactly
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Abidji, Ivory Coast
Karajá, Brazil Cree, Canada
Gunu, Cameroon
Many languages don’t fit exactly
But almost all are at least near-optimally informative.
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Recent findings
• An independent information-theoretic efficiency principle also explains graded categories and continuous evolutionary progression (Zaslavsky et al., 2018, PNAS)
Culina Agarabi Dyimini English
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Recent findings
• An independent information-theoretic efficiency principle also explains graded categories and continuous evolutionary progression (Zaslavsky et al., 2018, PNAS)
• Color naming reflects both perceptual structure and communicative need (Zaslavsky et al., 2018, Cognitive Science conference)
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communication quality
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Initial conclusions: Color
• Universals and variation in color naming across languages are explained by the principle of informative communication.
• The same principle also explains existing descriptive generalizations.
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1. Color
2. Kinship, space, number
3. Words for snow
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Kinship
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Kinship
Charles Kemp Science, 2012
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Kinship
Charles Kemp Science, 2012
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Kinship
Charles Kemp Science, 2012
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Kinship
Charles Kemp Science, 2012
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English
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English
Northern Paiute
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English
Northern Paiute
MM, DD, DS fall in the same category: reciprocal MM
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Data: 487 languages (Murdock, 1970).
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
Need probability: Estimated via corpus frequencies in English and German.
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
Need probability: Estimated via corpus frequencies in English and German.
Tradeoff: Between informativeness and simplicity.
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
Need probability: Estimated via corpus frequencies in English and German.
Tradeoff: Between informativeness and simplicity.
simple
in
form
ativ
e
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
Need probability: Estimated via corpus frequencies in English and German.
Tradeoff: Between informativeness and simplicity.
simple
in
form
ativ
e
Kemp & Regier, 2012, Science.
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
Need probability: Estimated via corpus frequencies in English and German.
Tradeoff: Between informativeness and simplicity.
simple
in
form
ativ
e
Kemp & Regier, 2012, Science.
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Data: 487 languages (Murdock, 1970).
Representation: Kinship grammars, based on assumed universal primitives from literature.
Need probability: Estimated via corpus frequencies in English and German.
Tradeoff: Between informativeness and simplicity.
simple
in
form
ativ
e
Kemp & Regier, 2012, Science.
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Explaining known constraints
More semantic distinctions in:
1. Near relatives (e.g. siblings), relative to distant relatives (e.g. maternal siblings)
Greenberg 1966
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Explaining known constraints
More semantic distinctions in:
1. Near relatives (e.g. siblings), relative to distant relatives (e.g. maternal siblings)
n(i)
Greenberg 1966
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Explaining known constraints
More semantic distinctions in:
1. Near relatives (e.g. siblings), relative to distant relatives (e.g. maternal siblings)
n(i)
Greenberg 1966
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Explaining known constraints
More semantic distinctions in:
1. Near relatives (e.g. siblings), relative to distant relatives (e.g. maternal siblings)
Ui
ieinE )()(n(i)
Greenberg 1966
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Explaining known constraints
More semantic distinctions in:
1. Near relatives (e.g. siblings), relative to distant relatives (e.g. maternal siblings)
2. Ascending generations (e.g. grandparents), relative to descending generations (e.g. grandchildren)
Ui
ieinE )()(n(i)
Greenberg 1966
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Explaining known constraints
More semantic distinctions in:
1. Near relatives (e.g. siblings), relative to distant relatives (e.g. maternal siblings)
2. Ascending generations (e.g. grandparents), relative to descending generations (e.g. grandchildren)
Ui
ieinE )()(n(i)
Greenberg 1966
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Spatial terms
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Spatial terms
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Spatial terms
Data: 9 languages (Levinson et al. 2003), + English, + Maijɨki.
Similarity: Assessed by pile-sorting of spatial scenes, by speakers of English and Dutch.
YukatekBasqueMaijɨki
informativeness informativeness informativeness
Khetarpal et al., 2013.
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Numeral systems
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Numeral systems
Xu & Regier, 2014.
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Numeral systems
Data: 25 languages from Comrie 2013 and Pica et al. 2004; all 20 “restricted” systems + 5 others.
Xu & Regier, 2014.
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Numeral systems
Data: 25 languages from Comrie 2013 and Pica et al. 2004; all 20 “restricted” systems + 5 others.
Xu & Regier, 2014.
Representation: Numeral system grammars, grounded in semantic primitives of exact and approximate numerosity.
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Numeral systems
Data: 25 languages from Comrie 2013 and Pica et al. 2004; all 20 “restricted” systems + 5 others.
Xu & Regier, 2014.
Representation: Numeral system grammars, grounded in semantic primitives of exact and approximate numerosity.
Need probabilities: Google n-gram English corpus, 2000.
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Numeral systems
Data: 25 languages from Comrie 2013 and Pica et al. 2004; all 20 “restricted” systems + 5 others.
Xu & Regier, 2014.
Representation: Numeral system grammars, grounded in semantic primitives of exact and approximate numerosity.
Need probabilities: Google n-gram English corpus, 2000.
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Numeral systems
Data: 25 languages from Comrie 2013 and Pica et al. 2004; all 20 “restricted” systems + 5 others.
Xu & Regier, 2014.
Representation: Numeral system grammars, grounded in semantic primitives of exact and approximate numerosity.
Need probabilities: Google n-gram English corpus, 2000.
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Semantic systems of color, kinship, space, and number in the world’s languages support efficient communication.
Interim conclusions
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Semantic systems of color, kinship, space, and number in the world’s languages support efficient communication.
Wide but constrained variation may reflect adaptation to functional pressure.
Interim conclusions
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1. Color
2. Kinship, space, number
3. Words for snow
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1. Color
2. Kinship, space, number
3. Words for snow
Alexandra CarstensenCharles Kemp
PLOS ONE, 2016
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Benjamin Lee Whorf, 1956
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“unredeemed piffle”
Geoffrey Pullum, 1991
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Geoffrey Pullum, 1991
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Dinosaur Comics, 2011
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Communicative need
Environment
Category system
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snow (English)
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(Arabic) ثلج
snow (English)
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(Arabic) ثلج
snow (English)
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(Arabic) ثلج
snow (English)
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Communicative need
Environment
Category system
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Communicative need
Environment
Category system
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Communicative need
Environment
Category system
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Communicative need
Environment
Category system
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Regier, Carstensen, & Kemp, 2016, PLOS ONE
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Regier, Carstensen, & Kemp, 2016, PLOS ONE
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Regier, Carstensen, & Kemp, 2016, PLOS ONE
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Similar results from another cross-language dataset.
Regier, Carstensen, & Kemp, 2016, PLOS ONE
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Similar results from another cross-language dataset.
Twitter analyses confirm that need probability for ice and snow drops off with mean temperature.
Regier, Carstensen, & Kemp, 2016, PLOS ONE
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Communicative need
Environment
Category system
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Conclusions: Semantic typology
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• Semantic systems across languages may reflect functional adaptation in support of efficient communication.
Conclusions: Semantic typology
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• Semantic systems across languages may reflect functional adaptation in support of efficient communication.
• Local communicative needs may leave their imprint on semantic systems, by modulating pressure for efficiency.
Conclusions: Semantic typology
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Semantic typology
The Sapir-Whorf hypothesis
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Semantic typology
The Sapir-Whorf hypothesis
Emily Cibelli, Yang Xu,Joe Austerweil, Tom Griffiths
PLOS ONE, 2016WIREs Cog. Sci., 2017
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The Sapir-Whorf hypothesis
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Our thoughts are shaped by our native language, and speakers of different languages therefore think differently.
The Sapir-Whorf hypothesis
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The Sapir-Whorf hypothesis
Controversial
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The Sapir-Whorf hypothesis
Controversial
• Appears to deny the possibility of a universal groundwork for cognition.
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The Sapir-Whorf hypothesis
Controversial
• Appears to deny the possibility of a universal groundwork for cognition.
• Evidence for it has not always reliably replicated.
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The Sapir-Whorf hypothesis
Controversial
• Appears to deny the possibility of a universal groundwork for cognition.
• Evidence for it has not always reliably replicated.
Claim: Viewing this hypothesis through the lens of probabilistic inference has the potential to resolve both issues.
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Whorf
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None Max Whorf
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Uncertainty
None Max Whorf
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Category adjustment modelHuttenlocher et al., 1991; Bae et al., 2015; Persaud & Hemmer, 2014
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Category adjustment modelHuttenlocher et al., 1991; Bae et al., 2015; Persaud & Hemmer, 2014
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Category adjustment modelHuttenlocher et al., 1991; Bae et al., 2015; Persaud & Hemmer, 2014
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Category adjustment modelHuttenlocher et al., 1991; Bae et al., 2015; Persaud & Hemmer, 2014
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Category adjustment modelHuttenlocher et al., 1991; Bae et al., 2015; Persaud & Hemmer, 2014
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Category adjustment modelHuttenlocher et al., 1991; Bae et al., 2015; Persaud & Hemmer, 2014
Bias toward prototype
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Category adjustment modelHuttenlocher et al., 1991; Bae et al., 2015; Persaud & Hemmer, 2014
Bias toward prototype
More bias with more uncertainty
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Ideas with broad application
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Memory for when an event occurred, affected by temporal categories. Huttenlocher et al. 1988
Ideas with broad application
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Memory for when an event occurred, affected by temporal categories. Huttenlocher et al. 1988
Judgments of object size, integrating cues from vision and touch. Ernst and Banks 2002
Ideas with broad application
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Memory for when an event occurred, affected by temporal categories. Huttenlocher et al. 1988
Judgments of object size, integrating cues from vision and touch. Ernst and Banks 2002
Category effects in vowel perception. Feldman et al. 2009
Ideas with broad application
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Predictions
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• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
Predictions
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• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
Predictions
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• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
• Bias should be greater with delay than without.
Predictions
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• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
• Bias should be greater with delay than without.
Predictions
Cibelli et al., 2016
PLOS ONE
![Page 147: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/147.jpg)
• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
• Bias should be greater with delay than without.
Predictions
Cibelli et al., 2016
PLOS ONE
![Page 148: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/148.jpg)
• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
• Bias should be greater with delay than without.
Predictions
Cibelli et al., 2016
PLOS ONE
![Page 149: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/149.jpg)
• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
• Bias should be greater with delay than without.
• Model should account for existing cross-language data on color memory.
Predictions
![Page 150: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/150.jpg)
• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
• Bias should be greater with delay than without.
• Model should account for existing cross-language data on color memory.
Predictions
![Page 151: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/151.jpg)
Davidoff et al., 1999, Nature
English vs. Berinmo
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Davidoff et al., 1999, Nature
English vs. Berinmo
• Color discrimination from memory
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Davidoff et al., 1999, Nature
English vs. Berinmo
• Color discrimination from memory
• Cross-category vs. within-category
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Davidoff et al., 1999, Nature
English vs. Berinmo
• Color discrimination from memory
• Cross-category vs. within-category
![Page 155: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/155.jpg)
Davidoff et al., 1999, Nature
English vs. Berinmo
• Color discrimination from memory
• Cross-category vs. within-category
![Page 156: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/156.jpg)
Data from Roberson et al. (2000)
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One model per languageData from Roberson et al. (2000)
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One model per languageData from Roberson et al. (2000)
![Page 159: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/159.jpg)
One model per languageData from Roberson et al. (2005)
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• English speakers should show bias in color reconstruction, toward prototypes of English color terms.
• Bias should be greater with delay than without.
• Model should account for existing cross-language data on color memory.
Predictions
![Page 161: What are the consequences of linguistic diversity for perception … · What are the consequences of linguistic diversity for perception and thought? UC Berkeley November 6, 2018.](https://reader035.fdocuments.us/reader035/viewer/2022070813/5f0c80c87e708231d435ba6b/html5/thumbnails/161.jpg)
Cross-language differences in color memory are consistent with reconstruction bias under uncertainty, guided by native-language categories, in a universal color space.
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Conclusions: Sapir-Whorf hypothesis
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Viewing the Sapir-Whorf hypothesis in terms of probabilistic inference:
Conclusions: Sapir-Whorf hypothesis
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Viewing the Sapir-Whorf hypothesis in terms of probabilistic inference:
• May resolve two major sources of controversy concerning this hypothesis
Conclusions: Sapir-Whorf hypothesis
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Viewing the Sapir-Whorf hypothesis in terms of probabilistic inference:
• May resolve two major sources of controversy concerning this hypothesis
• Links this hypothesis to independent principles and phenomena
Conclusions: Sapir-Whorf hypothesis
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Language Cognition
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Semantic typology
Sapir-Whorf hypothesis
Language Cognition
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Semantic typology
Sapir-Whorf hypothesis
Computation
Language Cognition
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Supported by:
• NSF and DTRA
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Supported by:
• NSF and DTRA
Many thanks to:
• My collaborators – especially: Alexandra Carstensen, Paul Kay, Charles Kemp, Naftali Tishby, Yang Xu, & Noga Zaslavsky.
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