informing public p erceptions of risk and other legally c onsequential f acts

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Informing Public Perceptions of Risk and Other Legally Consequential Facts Research Supported by: N ationalScience Foundation, SES-0922714, -0621840 & -0242106 R uebhausen Fund, Y ale Law School Project on Em erging N anotechnologies, W oodrow W ilson Int’l C enter for Scholars G eorgetow n U niversity Law School Tem ple U niversity Law School www. culturalcognition.net Dan M. Kahan Yale University & many others

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www. culturalcognition.net. Informing Public P erceptions of Risk and Other Legally C onsequential F acts. Dan M. Kahan Yale University & many others. What am I talking about? 0. Introductory study 1 . Cultural cognition generally 2. The communication of risk - PowerPoint PPT Presentation

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Page 1: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Informing Public Perceptions of Risk and Other Legally Consequential Facts

Research Supported by: National Science Foundation, SES-0922714, - 0621840 & -0242106 Ruebhausen Fund, Yale Law School Project on Emerging Nanotechnologies, Woodrow Wilson Int’l Center for Scholars Georgetown University Law School Temple University Law School

www. culturalcognition.net

Dan M. KahanYale University

& many others

Page 2: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

What am I talking about?

0. Introductory study

1. Cultural cognition generally

2. The communication of risk

3. The adjudication of facts

Page 3: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts
Page 4: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

HPV-Vaccine Risk Perception: Study Design

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

Page 5: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

HPV-Vaccine Risk Perception: Study Design

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

Page 6: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

HPV-Vaccine Risk Perception: Study Design

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

Page 7: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

HPV-Vaccine Risk Perception: Study Design

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

Page 8: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

HPV-Vaccine Risk Perception: Study Design

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

Page 9: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Hierarchy

Egalitarianism

Individualism Communitarianism

Mary Douglas’s “Group-Grid” Worldview Scheme

hierarchical individualists hierarchical communitarians

egalitarian communitariansegalitarian individualists

Page 10: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Hierarchy

Egalitarianism

Individualism Communitarianism

Mary Douglas’s “Group-Grid” Worldview Scheme

Risk > Benefit

Benefit > Risk

Page 11: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

HPV-Vaccine Risk Perception: Study Design

Page 12: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

HPV-Vaccine Risk Perception: Study Design

Page 13: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

61%

66%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

No Argument BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

56%

61%

66%

70%

40%

50%

60%

70%

80%

No Arg ument Argu me nt Expe cted Advoc ate/ Argumen tAli gnment

Une xpect ed Ad voca te/ArgumentAlignment

Plur alistic Advocate /Arg umentAlig nment

Hierarchi cal Individual istEgalitarian Communitari an

Page 14: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

56%

61%

66%

70%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

No Argument BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

Page 15: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

HPV-Vaccine Risk Perception: Study Design

Page 16: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1,500 adults drawn from nationally representative on-line panel

Hierarchy-egalitarianism Individualism-communitarianism

5 individual risk/benefit items Risk overall, benefit overall Combined into reliable 4-pt “risk scale”

1. No-argument (n = 250)2. Balanced Arguments (n = 250)3. Arguments plus experts (n = 1,022)

Sample

Cultural Worldviews

HPV-Vaccine Risk Perceptions

Conditions

HPV-Vaccine Risk Perception: Study Design

Page 17: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Culturally Identifiable ExpertsHierarchy

Egalitarianism

CommunitarianismIndividualism

Page 18: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

56%

61%

66%

70%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

No Argument BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

ExpectedArgument/Advocate

Alignment

Page 19: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

47%

56%

61%

71%

66%

70%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

No Argument ExpectedArgument/Advocate

Alignment

BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

UnexpectedArgument/Advocate

Alignment

Page 20: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

47%

56%

61%61%

71%

66%

70%

58%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

No Argument ExpectedArgument/Advocate

Alignment

UnexpectedArgument/Advocate

Alignment

PluralisticArgument

Environment

BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

Page 21: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

No Argument ExpectedArgument/Advocate

Alignment

UnexpectedArgument/Advocate

Alignment

PluralisticArgument

Environment

BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”

54%

65%

47%

56%

61%61%

71%

66%

70%

58%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

Page 22: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

What am I talking about?

0. Introductory study

1. Cultural cognition generally

2. The communication of risk

3. The adjudication of facts

Page 23: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Hierarchy

Egalitarianism

Abortion procedure

Mary Douglas’s Group-grid worldview scheme

compulsory psychiatric treatment

Abortion procedure

compulsory psychiatric treatment

Risk Perception KeyLow RiskHigh Risk

Individualism Communitarianism

Environment: climate, nuclear

Guns/Gun Control

Guns/Gun Control

HPV Vaccination

HPV Vaccination

Gays military/gay parenting

Gays military/gay parenting

Environment: climate, nuclearhierarchical individualists hierarchical communitarians

egalitarian communitariansegalitarian individualists

Page 24: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1. Culturally motivated search & assimilation

2. Cultural source credibility effect

3. Cultural availability effect

Mechanisms of cultural cognition

• Kahan, D.M., Braman, D., Slovic, P., Gastil, J. & Cohen, G. Cultural Cognition of the Risks and Benefits of Nanotechnology. Nature Nanotechnology 4, 87-91 (2009)

• Kahan, D.M., Jenkins-Smith, H. & Braman, D. Cultural Cognition of Scientific Consensus. J. Risk Res. 14, 147-174 (2011)

• Kahan, D.M., Braman, D., Cohen, G.L., Gastil, J. & Slovic, P. Who Fears the HPV Vaccine, Who Doesn't, and Why? An Experimental Study of the Evidence (mechanisms). L. & Human Behavior 34, 501-516 (2010)

Page 25: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts
Page 26: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

Greater

Lesser

perc

eive

d ris

k (z

-sco

re)

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.

Page 27: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Greater

Lesser

perc

eive

d ris

k (z

-sco

re)

PIT prediction: Science Illiteracy & Bounded Rationality

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci

High Sci. litearcy/System 2 (“slow”)

Low Sci. litearcy/System 1 (“fast”)

source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

Page 28: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci

Lesser Risk

Greater Risk

Science literacy Numeracylow high

perc

eive

d ris

k (z

-sco

re)

low high

PIT prediction PIT prediction

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

30b 30t 30b 30t

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

30b 30t 30b 30t

actual varianceactual variance

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci

source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.

Page 29: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Greater

Lesser

perc

eive

d ris

k (z

-sco

re)

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci

Low Sci lit/numeracy

High Sci lit/numeracy

Cultural Variance

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Hierarchical Individualist

Egalitarian Communitarian

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

Cultural variance conditional on sci. literacy/numeracy?

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

Page 30: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

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1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Greater

Lesser

perc

eive

d ris

k (z

-sco

re)

Low Sci lit/numeracy

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

High Sci lit/numeracy

Egalitarian Communitarian

PIT prediction: Culture as heuristic substitute

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low highHierarchical Individualist

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

Page 31: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

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1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Greater

Lesser

perc

eive

d ris

k (z

-sco

re)

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

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point 1 point 2

low vs. high sci High Sci lit/numeracy

Actual interaction of culture & sci-lit/num...

Low Sci lit/numeracy

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

sci_num

High Sci lit/numeracyEgal Comm

Low Sci/lit numeracyEgal Comm

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

Page 32: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Greater

Lesser

perc

eive

d ris

k (z

-sco

re)

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci High Sci lit/numeracy

Low Sci lit/numeracy

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

sci_num

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

sci_num

Low Sci lit/num.Hierarc Individ

High Sci lit/numeracyEgal Comm

High Sci lit/numeracyHierarch Individ

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Low Sci/lit numeracyEgal Comm

Actual interaction of culture & sci-lit/num...

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

Page 33: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Greater

Lesser

perc

eive

d ris

k (z

-sco

re)

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

point 1 point 2

low vs. high sci High Sci lit/numeracy

Low Sci lit/numeracy

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

sci_num

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

sci_num

Low Sci lit/num.Hierarc Individ

POLARIZATION INCREASES as scil-lit/numeracy increases

High Sci lit/numeracyEgal Comm

High Sci lit/numeracyHierarch Individ

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

low high

Low Sci/lit numeracyEgal Comm

U.S. general population survey, N = 1,500. Scale 0 (“no risk at all”) to 10 (“extreme risk”), M = 5.7, SD = 3.4. CIs reflect 0.95 level of confidence.source: Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Clim. Change, advance online publication (2012), doi:10.1038/nclimate1547.

“How much risk do you believe climate change poses to human health, safety, or prosperity?”

Page 34: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1. Culturally motivated search & assimilation

2. Cultural source credibility effect

3. Cultural availability effect

4. Culturally motivated system(atic) 2 reasoning

Mechanisms of cultural cognition

• Kahan, D.M., Braman, D., Slovic, P., Gastil, J. & Cohen, G. Cultural Cognition of the Risks and Benefits of Nanotechnology. Nature Nanotechnology 4, 87-91 (2009)

• Kahan, D.M., Jenkins-Smith, H. & Braman, D. Cultural Cognition of Scientific Consensus. J. Risk Res. 14, 147-174 (2011)

• Kahan, D.M., Braman, D., Cohen, G.L., Gastil, J. & Slovic, P. Who Fears the HPV Vaccine, Who Doesn't, and Why? An Experimental Study of the Evidence (mechanisms). L. & Human Behavior 34, 501-516 (2010)

• Kahan, D.M., Peters, E., Wittlin, M., Slovic, P., Ouellette, L.L., Braman, D. & Mandel, G. The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Climate Change, advance on line publication, doi:10.1038/nclimate1547 (2012).

Page 35: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

What am I talking about?

0. Introductory study

1. Cultural cognition generally

2. The communication of risk

3. The adjudication of facts

Page 36: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

A tale of two vaccines …

Page 37: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Culturally Identifiable Experts

Source: Kahan, D.M., Braman, D., Cohen, G.L., Gastil, J. & Slovic, P. Who Fears the HPV Vaccine, Who Doesn't, and Why? An Experimental Study of the Mechanisms of Cultural Cognition. L. & Human Behavior 34, 501-516 (2010).

Hierarchy

Egalitarianism

CommunitarianismIndividualism

Page 38: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

No Argument ExpectedArgument/Advocate

Alignment

UnexpectedArgument/Advocate

Alignment

PluralisticArgument

Environment

BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”

54%

65%

47%

56%

61%61%

71%

66%

70%

58%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

Page 39: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Oct. 2005…

Oct. 2011

Page 40: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

No Argument ExpectedArgument/Advocate

Alignment

UnexpectedArgument/Advocate

Alignment

PluralisticArgument

Environment

BalancedArgument

Pct

. Agr

ee“The HPV vaccine is safe for use among young girls...”

54%

65%

47%

56%

61%61%

71%

66%

70%

58%

40%

50%

60%

70%

80%

No Argument Argument Expected Advocate/ArgumentAlignment

Unexpected Advocate/ArgumentAlignment

Pluralistic Advocate/ArgumentAlignment

Hierarchical IndividualistEgalitarian Communitarian

Risk Perception by Condition, Worldview

2.0

2.3

2.5

2.8

3.0

3.3

3.5

No Argument Argument withoutAdvocate

Expected AdvocateAlignment

UnexpectedAdvocate Alignment

Intramural AdvocateAlignment

Hierarch IndividualistEgalitarian Communitarian

Page 41: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Oct. 2005…

Oct. 2011

Page 42: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

What am I talking about?

0. Introductory study

1. Cultural cognition generally

2. The communication of risk

3. The adjudication of facts

Page 43: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts
Page 44: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Did protestors cross the line between “speech” and “intimidation”?

Page 45: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Experimental Conditions

Recruitment Center ConditionAbortion Clinic Condition

Page 46: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Hierarchy

Egalitarianism

Individualism Communitarianism

Mary Douglas’s “Group-Grid” Worldview Scheme

hierarchical individualists hierarchical communitarians

egalitarian communitariansegalitarian individualists

Page 47: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Pct.

Agre

e

Protestors blocked Screamed in face

Pedestrians just not want to listen Police just annoyed

50%

69%

43%

56%

25% 25%29%

77%

13%

70%

8%

37%

26%

16%

70%

32%39%

13%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Anti-abortion

Anti-military Anti-abortion

Anti-milit ary Anti-abortion

Anti-milit ary

Police liable Enjoin police Damag es vs. police

Egal CommEgal Ind ivdHier CommHier Individ

50%

69 %

43%

56%

25% 25%29%

77 %

13%

70%

8%

37%

26%

16%

70%

32%39%

13%

0%

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

10 0%

Anti-abortion

Anti-military Anti-ab ortio n

Anti-military Anti-abortion

Anti-military

Police liable Enjoin police Damages vs. police

Egal CommEgal IndivdHier CommHier Individ

50%

69%

43%

56%

25% 25%29%

77%

13%

70%

8%

37%

26%

16%

70%

32%

39%

13%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100 %

Ant i-abortion

Ant i-mi litary Ant i-abortion

Anti-military Anti -abortion

Anti-military

Police li able Enjoin pol ice Damages vs. police

Egal Comm

Egal IndivdHier CommHier Indiv id

50%

69%

43%

56%

25% 25%29%

77%

13%

70%

8%

37%

26%

16%

70%

32%39%

13%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Ant i-abortion

Anti-military Ant i-abortion

Anti -mil itary Anti-abort ion

Anti-military

Police li able Enjoin pol ice Damages vs. police

Egal CommEgal IndivdHier Comm

Hier Indi vid

0%

25%

50%

75%

100%

abortion clinic recruitment center abortion clinic recruitment center

EI v. HC EC v. HI

Screamed in face

0%

25%

50%

75%

100%

abortion clinic recruitment center abortion clinic recruitment center

EI v. HC EC v. HI

Protestors blocked

0%

25%

50%

75%

100%

abortion clinic recruitment center abortion clinic recruitment center

EI v. HC EC v. HI

Police just annoyed

0%

25%

50%

75%

100%

abortion clinic recruitment center abortion clinic recruitment center

EI v. HC EC v. HI

Pedesterians not want to listen

Page 48: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts
Page 49: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1. How should judge treat lawyers’ anticipation of cultural cognition in jury selection?

2. How should cultural cognition dynamic influence evidentiary rulings, including assessments of prejudicial impact?

3. Should the judge put any special limits on closing arguments to avoid exploitation of cultural cognition?

4. Are there procedural devices—ones relating to form of proof at trial, to jury instructions, or to jury deliberations—that might help to mitigate cultural cognition?

5. How, in opinion writing or otherwise, can the judge anticipate and minimize the impact of cultural cognition on how members of the public perceive the impartiality of trials and appellate decisions?

6. How should dynamics of cultural cognition influence summary adjudication procedures?

Judicial management of cultural cognition

Page 50: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts
Page 51: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1. How should judge treat lawyers’ anticipation of cultural cognition in jury selection?

2. How should cultural cognition dynamic influence evidentiary rulings, including assessments of prejudicial impact?

3. Should the judge put any special limits on closing arguments to avoid exploitation of cultural cognition?

4. Are there procedural devices—ones relating to form of proof at trial, to jury instructions, or to jury deliberations—that might help to mitigate cultural cognition?

5. How, in opinion writing or otherwise, can the judge anticipate and minimize the impact of cultural cognition on how members of the public perceive the impartiality of trials and appellate decisions?

6. How should dynamics of cultural cognition influence summary adjudication procedures?

Judicial management of cultural cognition

Page 52: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts
Page 53: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Dependent Variable

Force

Justified Lethal Risk to Public

Lethal Risk to Police

Chase Not Worth Risk

Harris More at Fault

Female

-0.15 (0.10)

-0.01 (0.11)

0.09 (0.10)

0.03 (0.10)

-0.08 (0.12)

Black (v. White)

-0.66 (0.22)

-0.45 (0.22)

-0.60 (0.22)

0.46 (0.22)

-0.92 (0.22)

Other Minority (v. white)

0.09 (0.16)

0.09 (0.17)

0.06 (0.16)

-0.03 (0.16)

-0.32 (0.17)

Age

-0.01 (0.00)

0.00 (0.00)

0.00 (0.00)

0.01 (0.00)

-0.01 (0.00)

Household income

0.03 (0.01)

0.06 (0.02)

0.02 (0.01)

-0.03 (0.01)

0.04 (0.02)

Education

-0.08 (0.03)

-0.05 (0.03)

-0.06 (0.03)

0.03 (0.03)

-0.02 (0.04)

South (v. West)

-0.02 (0.14)

0.08 (0.14)

-0.10 (0.14)

0.08 (0.13)

-0.21 (0.16)

Midwest (v. West)

-0.21 (0.15)

0.06 (0.15)

-0.05 (0.15)

0.27 (0.14)

-0.20 (0.17)

Northeast (v. west)

-0.33 (0.15)

-0.17 (0.16)

-0.25 (0.15)

0.30 (0.15)

-0.48 (0.17)

Urban

0.15 (0.14)

0.18 (0.15)

0.13 (0.14)

0.04 (0.14)

0.14 (0.16)

Married

0.27 (0.11)

0.32 (0.12)

0.16 (0.11)

-0.22 (0.11)

0.31 (0.13)

Parent

-0.01 (0.12)

0.04 (0.13)

0.15 (0.12)

-0.07 (0.12)

0.17 (0.14)

Republican (v. Democrat)

-0.01 (0.13)

-0.03 (0.14)

-0.04 (0.13)

-0.31 (0.13)

0.29 (0.16)

Independent (v. Democrat)

-0.03 (0.33)

0.00 (0.33)

0.01 (0.33)

-0.03 (0.31)

0.15 (0.38)

Conservative

0.05 (0.05)

0.09 (0.05)

0.05 (0.04)

0.03 (0.04)

0.08 (0.05)

Hierarchy

0.46 (0.08)

0.10 (0.08)

0.16 (0.08)

-0.39 (0.08)

0.39 (0.09)

Individualism

0.07 (0.09)

0.04 (0.09)

0.08 (0.08)

-0.08 (0.08)

0.07 (0.10)

R2 (McKelvey/Zavoina) .11 .06 .04 .09 .14 log likelihood -2060.64 -1731.62 -2049.7 -2296.53 -1393.14 Prob > Chi2 .00 .00 .00 .00 .00 N = 1,347. Dependent variables are indicated responses measures. Ordered log-odds (logit) coefficients. Bolded and underlined coefficients are significant at p ≤ .05; bolded only and not underlined are significant at p ≤ .10. Parentheticals indicate standard errors

Page 54: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Ron

0%

20%

40%

60%

80%

100%

Ron Pat Linda Bernie

Ron BernieLindaPat

Deadly force warranted by lethal risk posed by driverMonte carlo simulation (m = 3,000)

Like

lihoo

d of

agr

eein

g w

ith S

. Ct.

maj

ority

RonRon BernieLindaPat

Page 55: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1. How should judge treat lawyers’ anticipation of cultural cognition in jury selection?

2. How should cultural cognition dynamic influence evidentiary rulings, including assessments of prejudicial impact?

3. Should the judge put any special limits on closing arguments to avoid exploitation of cultural cognition?

4. Are there procedural devices—ones relating to form of proof at trial, to jury instructions, or to jury deliberations—that might help to mitigate cultural cognition?

5. How, in opinion writing or otherwise, can the judge anticipate and minimize the impact of cultural cognition on how members of the public perceive the impartiality of trials and appellate decisions?

6. How should dynamics of cultural cognition influence summary adjudication procedures?

Judicial management of cultural cognition

Page 56: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

What am I talking about?

0. Introductory study

1. Cultural cognition generally

2. The communication of risk

3. The adjudication of facts

Page 57: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Cultural Cognition Cat Scan Experiment

Go to www.culturalcognition.net!

Page 58: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Balanced information, benefits & risks

Page 59: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

RiskPerception

channel 1: content

Two Channel Communication Strategy

Information channel 2: meaning

Page 60: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts
Page 61: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

4. Experimental response items

A. Evidence Skepticism Module

13. Convincing. We would like to know what you think of the Nature Science study, excerpts of which you just read. In your view, how convincing was the study on a scale of 0-10 with 0 meaning “completely unconvincing” to 10 meaning “completely convincing”?

Please indicate how strongly you disagree or agree with the following statements concerning the study. [Strongly disagree, moderately disagree, slightly disagree, slightly agree, moderately agree, strongly agree]

14. Biased. The scientists who did the study were biased. 15. Computers. Computer models like those relied on in the study are not a

reliable basis for predicting the impact of CO2 on the climate. 16. Moredata. More studies must be done before policymakers rely on the

findings of the Nature Science study.

study_dismiss scale (α = 0.85)

Page 62: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Hierarchy

Egalitarianism

Individualism

Climate change

Cultural Cognition Worldviews

Communitarianism

Climate change

Risk Perception KeyLow RiskHigh Risk

Page 63: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

z_St

udy

dism

iss 2

Dismiss

Credit

Study dismissiveness

Hierarch IndividEgal Commun

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

anti-pollution

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

Page 64: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

z_St

udy

dism

iss 2

Dismiss

Credit

Study dismissiveness

Hierarch IndividEgal Commun

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

anti-pollution

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

Page 65: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Control Condition

Page 66: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

z_St

udy

dism

iss 2

Dismiss

Credit

Study dismissiveness

Hierarch IndividEgal Commun

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

anti-pollution

Page 67: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Anti-pollution Condition

Page 68: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Geoengineering Condition

Page 69: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

4. Experimental response items

A. Evidence Skepticism Module

13. Convincing. We would like to know what you think of the Nature Science study, excerpts of which you just read. In your view, how convincing was the study on a scale of 0-10 with 0 meaning “completely unconvincing” to 10 meaning “completely convincing”?

Please indicate how strongly you disagree or agree with the following statements concerning the study. [Strongly disagree, moderately disagree, slightly disagree, slightly agree, moderately agree, strongly agree]

14. Biased. The scientists who did the study were biased. 15. Computers. Computer models like those relied on in the study are not a

reliable basis for predicting the impact of CO2 on the climate. 16. Moredata. More studies must be done before policymakers rely on the

findings of the Nature Science study.

study_dismiss scale (α = 0.85)

Page 70: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

RiskPerception

channel 1: content

Two Channel Communication Strategy

Information channel 2: meaning

Page 71: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

Anti-pollution Condition

Page 72: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

z_St

udy

dism

iss 2

Dismiss

Credit

Study dismissiveness

Hierarch IndividEgal Commun

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

anti-pollution

Page 73: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

z_St

udy

dism

iss 2

Dismiss

Credit

Study dismissiveness

Hierarch IndividEgal Commun

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

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control pollution geoengineering

HI

EC

anti-pollution

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Geoengineering Condition

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RiskPerception

channel 1: content

Two Channel Communication Strategy

Information channel 2: meaning

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-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

z_St

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Dismiss

Credit

Study dismissiveness

Hierarch IndividEgal Commun

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control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

anti-pollution

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-1.20-1.00-0.80-0.60-0.40-0.200.000.200.400.600.801.001.20

control pollution geoengineering

HI

EC

z_St

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dism

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Credit

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Hierarch IndividEgal Commun

anti-pollution

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1.0

1.5

2.0

2.5

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more polarization

lesspolarization

Polarizationz_

Stud

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2

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Page 80: Informing  Public  P erceptions of Risk and Other Legally  C onsequential  F acts

1. Two hypotheses

2. Data

3. Tragedy of the risk perception commons

4. Two-channel communication strategy

The science communication problem . . .

Kahan D.M., Jenkins-Smith, J., Taranotola, T., Silva C., & Braman, D., Geoengineering and the Science Communication Environment: a Cross-cultural Study, CCP Working Paper No. 92 (Jan. 9, 2012).

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Cultural Cognition Cat Scan Experiment

Go to www.culturalcognition.net!