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Comparative Strengths and Weaknesses Jason Seawright [email protected] August 10, 2010 J. Seawright (PolSci) Essex 2010 August 10, 2010 1 / 24
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Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright [email protected] August 10, 2010 J.Seawright (PolSci)

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Page 1: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Comparative Strengths andWeaknesses

Jason Seawright

[email protected]

August 10, 2010

J. Seawright (PolSci) Essex 2010 August 10, 2010 1 / 24

Page 2: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Snow on Cholera

J. Seawright (PolSci) Essex 2010 August 10, 2010 2 / 24

Page 3: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Three Families of Research

1 Qualitative

2 Quantitative

3 Experimental

J. Seawright (PolSci) Essex 2010 August 10, 2010 3 / 24

Page 4: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: RSI

1 Level of Measurement

2 Size of the N

3 Statistical Tests

4 Thick vs. Thin Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 4 / 24

Page 5: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: RSI

DSOs vs. CPOs

J. Seawright (PolSci) Essex 2010 August 10, 2010 5 / 24

Page 6: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

1 Approaches to explanation

J. Seawright (PolSci) Essex 2010 August 10, 2010 6 / 24

Page 7: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

1 Approaches to explanation

2 Concepts of causation

J. Seawright (PolSci) Essex 2010 August 10, 2010 6 / 24

Page 8: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

1 Approaches to explanation

2 Concepts of causation

3 Multivariate explanations

J. Seawright (PolSci) Essex 2010 August 10, 2010 6 / 24

Page 9: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

1 Approaches to explanation

2 Concepts of causation

3 Multivariate explanations

4 Equifinality

J. Seawright (PolSci) Essex 2010 August 10, 2010 6 / 24

Page 10: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

1 Approaches to explanation

2 Concepts of causation

3 Multivariate explanations

4 Equifinality

5 Scope and generalization

J. Seawright (PolSci) Essex 2010 August 10, 2010 6 / 24

Page 11: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

6 Case selection practices

J. Seawright (PolSci) Essex 2010 August 10, 2010 7 / 24

Page 12: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

6 Case selection practices

7 Weighting observations

J. Seawright (PolSci) Essex 2010 August 10, 2010 7 / 24

Page 13: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

6 Case selection practices

7 Weighting observations

8 Substantively important cases

J. Seawright (PolSci) Essex 2010 August 10, 2010 7 / 24

Page 14: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

6 Case selection practices

7 Weighting observations

8 Substantively important cases

9 Lack of fit

J. Seawright (PolSci) Essex 2010 August 10, 2010 7 / 24

Page 15: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qual/Quant: Two Cultures

6 Case selection practices

7 Weighting observations

8 Substantively important cases

9 Lack of fit

10 Concepts and measurement

J. Seawright (PolSci) Essex 2010 August 10, 2010 7 / 24

Page 16: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qualitative Research

Archival Work

J. Seawright (PolSci) Essex 2010 August 10, 2010 8 / 24

Page 17: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qualitative Research

Archival Work

In-depth Interviews

J. Seawright (PolSci) Essex 2010 August 10, 2010 8 / 24

Page 18: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qualitative Research

Archival Work

In-depth Interviews

Expert Interviews

J. Seawright (PolSci) Essex 2010 August 10, 2010 8 / 24

Page 19: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qualitative Research

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 8 / 24

Page 20: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qualitative Research

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

Focus Groups

J. Seawright (PolSci) Essex 2010 August 10, 2010 8 / 24

Page 21: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Qualitative Research

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

Focus Groups

Participant Observation

J. Seawright (PolSci) Essex 2010 August 10, 2010 8 / 24

Page 22: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Strengths

Archival Work

J. Seawright (PolSci) Essex 2010 August 10, 2010 9 / 24

Page 23: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Strengths

Archival Work

In-depth Interviews

J. Seawright (PolSci) Essex 2010 August 10, 2010 9 / 24

Page 24: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Strengths

Archival Work

In-depth Interviews

Expert Interviews

J. Seawright (PolSci) Essex 2010 August 10, 2010 9 / 24

Page 25: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Strengths

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 9 / 24

Page 26: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Strengths

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

Focus Groups

J. Seawright (PolSci) Essex 2010 August 10, 2010 9 / 24

Page 27: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Strengths

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

Focus Groups

Participant Observation

J. Seawright (PolSci) Essex 2010 August 10, 2010 9 / 24

Page 28: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Weaknesses

Archival Work

J. Seawright (PolSci) Essex 2010 August 10, 2010 10 / 24

Page 29: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Weaknesses

Archival Work

In-depth Interviews

J. Seawright (PolSci) Essex 2010 August 10, 2010 10 / 24

Page 30: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Weaknesses

Archival Work

In-depth Interviews

Expert Interviews

J. Seawright (PolSci) Essex 2010 August 10, 2010 10 / 24

Page 31: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Weaknesses

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 10 / 24

Page 32: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Weaknesses

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

Focus Groups

J. Seawright (PolSci) Essex 2010 August 10, 2010 10 / 24

Page 33: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Weaknesses

Archival Work

In-depth Interviews

Expert Interviews

Content Analysis

Focus Groups

Participant Observation

J. Seawright (PolSci) Essex 2010 August 10, 2010 10 / 24

Page 34: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Shared Weaknesses

J. Seawright (PolSci) Essex 2010 August 10, 2010 11 / 24

Page 35: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Quantitative Research

Surveys

J. Seawright (PolSci) Essex 2010 August 10, 2010 12 / 24

Page 36: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Quantitative Research

Surveys

Cross-National Regression

J. Seawright (PolSci) Essex 2010 August 10, 2010 12 / 24

Page 37: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Quantitative Research

Surveys

Cross-National Regression

Ecological Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 12 / 24

Page 38: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Quantitative Research

Surveys

Cross-National Regression

Ecological Analysis

Individual-Level Analysis of Records

J. Seawright (PolSci) Essex 2010 August 10, 2010 12 / 24

Page 39: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Quantitative Research

Surveys

Cross-National Regression

Ecological Analysis

Individual-Level Analysis of Records

Event-History Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 12 / 24

Page 40: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Quantitative Research

Surveys

Cross-National Regression

Ecological Analysis

Individual-Level Analysis of Records

Event-History Analysis

Time-Series Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 12 / 24

Page 41: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Quantitative Research

Surveys

Cross-National Regression

Ecological Analysis

Individual-Level Analysis of Records

Event-History Analysis

Time-Series Analysis

TSCS Analysis

J. Seawright (PolSci) Essex 2010 August 10, 2010 12 / 24

Page 42: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Shared Weaknesses

J. Seawright (PolSci) Essex 2010 August 10, 2010 13 / 24

Page 43: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Experiments

Randomization

J. Seawright (PolSci) Essex 2010 August 10, 2010 14 / 24

Page 44: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Experiments

Randomization

Manipulation

J. Seawright (PolSci) Essex 2010 August 10, 2010 14 / 24

Page 45: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 15 / 24

Page 46: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 15 / 24

Page 47: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 16 / 24

Page 48: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 17 / 24

Page 49: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 18 / 24

Page 50: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 19 / 24

Page 51: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 20 / 24

Page 52: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 21 / 24

Page 53: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Bolstering Methods

J. Seawright (PolSci) Essex 2010 August 10, 2010 22 / 24

Page 54: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Installing and Using R

http://cran.r-project.org/

J. Seawright (PolSci) Essex 2010 August 10, 2010 23 / 24

Page 55: Comparative Strengths and Weaknessesjws780/essexslides/day2.pdf · Comparative Strengths and Weaknesses Jason Seawright j-seawright@northwestern.edu August 10, 2010 J.Seawright (PolSci)

Your Mission...

J. Seawright (PolSci) Essex 2010 August 10, 2010 24 / 24