Preface
Acknowledgments
About the Authors
PART I: FOUNDATIONS
Chapter 1. Research in the Real World
Research, Policy, and Practice
Descriptive and Causal Research
Epistemology: Ways of Knowing
Approaching Research From Different Angles
Conclusion: The Road Ahead
Chapter 2. Theory, Models, and Research Questions
Community Policing Comes to Portland
Logic Models: Mechanisms of Programs
Alternative Perspectives on Theory in Social Research
How to Find and Focus Research Questions
Conclusion: Theories Are Practical
Chapter 3. Qualitative Research
Fighting Malaria in Kenya
What Is Qualitative Research?
Existing Qualitative Data
Participant Observation and Ethnography
Qualitative Data Analysis
The Qualitative-Quantitative Debate
Ethics in Qualitative Research
Conclusion: Matching Methods to Questions
PART II: STRATEGIES FOR DESCRIPTION
Chapter 4. Measurement
Criterion-Related Validity
Validity and Reliability in Qualitative Research
Measurement in the Real World: Trade-offs and Choices
Conclusion: Measurement Matters
Chapter 5. Sampling
Gauging the Fallout From Hurricane Katrina
Problems and Biases in Sampling
Random (Probability) Sampling
Sampling Distributions, Standard Errors, and Confidence Intervals
Sampling and Generalizability: A Summary
Chapter 6. Secondary Data
Tracking a Global Pandemic
Quantitative Data Forms and Structures
Secondary Qualitative Data
Some Limitations of Secondary Data
Chapter 7. Surveys and Other Primary Data
Taking the Nation’s Economic Pulse
When Should You Do a Survey?
Steps in the Survey Research Process
Modes of Survey Data Collection
Ethics of Survey Research
Other Ways to Collect Primary Data
PART III: STATISTICAL TOOLS AND INTERPRETATIONS
Chapter 8. Making Sense of the Numbers
“Last Weekend I Walked Eight”
Statistics Starting Point: Variables in a Data Set
Measures of Center: Mean and Median
Measures of Spread and Variation
Relationships Between Categorical Variables
Relationships Between Quantitative Variables: Scatterplots and Correlation
Simple Regression: Best-Fit Straight Line
Conclusion: Tools for Description and Causation
Chapter 9. Making Sense of Inferential Statistics
Statistical Inference: What’s It Good For?
The Sampling Distribution: Foundation of Statistical Inference
Statistical Significance, Practical Significance, and Power
Issues and Extensions of Statistical Inference
Chapter 10. Making Sense of Multivariate Statistics
Multiple Regression: The Basics
Categorical Independent Variables
Interactions in Regression
Functional Form and Transformations in Regression
Categorical Variables as Dependent Variables in Regression
Which Statistical Methods Can I Use?
Other Multivariate Methods
PART IV: STRATEGIES FOR CAUSATION
Chapter 11. Causation
Family Dinners and Teenage Substance Abuse
Alternative Explanations of a Correlation
Evidence of Causation: Some Critical Clues
Self-Selection and Endogeneity
The Counterfactual Definition of Causation
Experimentation and Exogeneity: Making Things Happen
Conclusion: Tools to Probe Causation
Chapter 12. Observational Studies
Private Versus Public Schools
What Is an Observational Study?
Control Variables: An Empirical Example
How to Choose Control Variables
Epidemiological Approaches to Observational Studies
Conclusion: Observational Studies in Perspective
Chapter 13. Using Regression to Estimate Causal Effects
Cigarette Taxes and Smoking
From Stratification to Multiple Regression
Does Greenery Affect Birth Outcomes?
Further Topics in Regression for Estimating Causal Effects
Control Variables With Exogenous Independent Variables: The Gender Earnings Gap
Other Multivariate Techniques for Observational Studies
Conclusion: A Widely Used Strategy, With Drawbacks
Chapter 14. Randomized Experiments
Random Assignment: Creating Statistical Equivalence
The Logic of Randomized Experiments: Exogeneity Revisited
The Settings of Randomized Experiments
Generalizability of Randomized Experiments
Variations on the Design of Experiments
Analysis of Randomized Experiments
Ethics of Randomized Experiments
Qualitative Methods and Randomized Experiments
Conclusion: A Gold Standard, With Limitations
Chapter 15. Natural and Quasi Experiments
A Casino Benefits the Mental Health of Cherokee Children
What Are Natural and Quasi Experiments?
Internal Validity of Natural and Quasi Experiments
Generalizability of Natural and Quasi Experiments
Types of Natural and Quasi Experimental Studies
Difference-in-Differences Strategy
Instrumental Variables and Regression Discontinuity
Ethics of Quasi and Natural Experiments
PART V: CONTEXT AND COMMUNICATION
Chapter 16. The Politics, Production, and Ethics of Research
Risking Your Baby’s Health
The Production of Research
Making Research Open and Transparent
Chapter 17. How to Find, Review, and Present Research
How to Search for Studies
How to Write a Literature Review
How to Communicate Your Own Research
How to Publish Your Research
Glossary
References
Index