Regression model
Difference-in-Differences (Diff-in-Diff)
Difference-in-Differences is a causal-inference method that estimates the effect of an intervention by comparing how a treatment group and a control group change over time. Made famous by Card and Krueger's 1994 minimum-wage study and developed in Angrist and Pischke's Mostly Harmless Econometrics, it isolates the treatment effect as the difference between the two groups' before-after changes.
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Sources
- Angrist, J. D., & Pischke, J.-S. (2009). Mostly Harmless Econometrics: An Empiricist's Companion. Princeton University Press. ISBN: 978-0691120355
- Card, D., & Krueger, A. B. (1994). Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania. American Economic Review, 84(4), 772-793. link ↗
Related methods
Referenced by
Adaptive Natural ExperimentBayesian Causal Impact AnalysisBayesian Counterfactual Impact EvaluationBayesian Difference-in-DifferencesBayesian Event Study DesignBayesian Fuzzy Regression DiscontinuityBayesian Instrumental VariablesBayesian Panel Event StudyBayesian Synthetic Control MethodBlocked Natural ExperimentCausal Discovery AlgorithmsCausal Impact AnalysisCoarsened Exact MatchingCounterfactual Impact EvaluationCounterfactual Impact Evaluation in Education ResearchCrossover Natural ExperimentDifference-in-Differences in Education ResearchDifference-in-DiscontinuitiesDoubly Robust Estimation in Education ResearchDynamic Counterfactual Impact EvaluationDynamic Difference-in-DifferencesDynamic Event Study DesignDynamic Instrumental VariablesDynamic Interrupted Time SeriesDynamic Panel Event StudyDynamic Synthetic Control MethodEvent Study Design in Education ResearchFactorial Natural ExperimentFirst-Difference EstimatorFixed Effects Panel ModelFuzzy Regression DiscontinuityFuzzy Regression Discontinuity in Education ResearchHeterogeneous Treatment Effect Coarsened Exact MatchingHeterogeneous Treatment Effect Difference-in-DifferencesHeterogeneous Treatment Effect Event Study DesignHeterogeneous Treatment Effect Interrupted Time SeriesHeterogeneous treatment effect Panel event studyHeterogeneous treatment effect Placebo testHeterogeneous Treatment Effect Propensity Score MatchingHeterogeneous Treatment Effect Sensitivity Analysis for CausalityHeterogeneous Treatment Effect Synthetic Control MethodInstrumental Variables in Education ResearchInterrupted Time SeriesInterrupted Time Series in Education ResearchInverse Probability Weighting in Education ResearchMachine learning-augmented causal impact analysisMachine Learning-Augmented Counterfactual Impact EvaluationMachine learning-augmented difference-in-differencesMachine learning-augmented doubly robust estimationMachine learning-augmented event study designMachine Learning-Augmented Fuzzy Regression DiscontinuityMachine Learning-Augmented Interrupted Time SeriesMachine Learning-Augmented Panel Event StudyMachine Learning-Augmented Placebo TestMachine learning-augmented propensity score weightingMachine Learning-Augmented Sensitivity Analysis for CausalityMachine Learning-Augmented Synthetic Control MethodMarginal Structural ModelMarginal structural model in education researchMatching EstimatorMulti-period Causal Impact AnalysisMulti-period Coarsened Exact MatchingMulti-period Counterfactual Impact EvaluationMulti-period Difference-in-differencesMulti-period Doubly Robust EstimationMulti-period Event Study DesignMulti-period Interrupted Time SeriesMulti-period Matching EstimatorMulti-period Regression Discontinuity DesignMulti-period Synthetic Control MethodNatural ExperimentPanel Data Causal Impact AnalysisPanel Data Coarsened Exact MatchingPanel Data Difference-in-DifferencesPanel Data Fuzzy Regression DiscontinuityPanel Data Instrumental VariablesPanel Data Interrupted Time SeriesPanel Data Matching EstimatorPanel Data Placebo TestPanel Data Propensity Score MatchingPanel Data Regression Discontinuity DesignPanel Data Synthetic Control MethodPanel Event StudyPanel Event Study in Education ResearchPanel Fixed EffectsPanel-based Causal-Comparative ResearchPanel-based Observational Quantitative ResearchPilot Natural ExperimentPlacebo Test in Education ResearchPolicy Evaluation Causal Impact AnalysisPolicy Evaluation Coarsened Exact MatchingPolicy Evaluation Counterfactual Impact EvaluationPolicy Evaluation Difference-in-DifferencesPolicy Evaluation Entropy BalancingPolicy Evaluation Event Study DesignPolicy Evaluation Fuzzy Regression DiscontinuityPolicy Evaluation Instrumental VariablesPolicy Evaluation Interrupted Time SeriesPolicy Evaluation Marginal Structural ModelPolicy Evaluation Matching EstimatorPolicy Evaluation Panel Event StudyPolicy Evaluation Placebo TestPolicy Evaluation Propensity Score MatchingPolicy Evaluation Propensity Score WeightingPolicy Evaluation Regression Discontinuity DesignPolicy Evaluation Synthetic Control MethodPretest-Posttest Experimental DesignPropensity Score Matching in Education ResearchPropensity Score WeightingPropensity Score Weighting in Education ResearchRandom Effects ModelRegression Discontinuity DesignRegression discontinuity design in education researchRegression Kink DesignRobust Counterfactual Impact EvaluationRobust Difference-in-DifferencesRobust Fuzzy Regression DiscontinuityRobust Instrumental VariablesRobust Interrupted Time SeriesRobust Marginal Structural ModelRobust Matching EstimatorRobust Panel Event StudyRobust Regression Discontinuity DesignRobust Synthetic Control MethodSensitivity Analysis for CausalitySensitivity analysis for causality in education researchShift-Share IVSpatial Causal Impact AnalysisSpatial Coarsened Exact MatchingSpatial Counterfactual Impact EvaluationSpatial Difference-in-DifferencesSpatial Doubly Robust EstimationSpatial Event Study DesignSpatial Inverse Probability WeightingSpatial Panel Event StudySpatial Regression Discontinuity DesignSpatial Sensitivity Analysis for CausalitySpatial Synthetic Control MethodStepped Wedge Cluster Randomized TrialStructural Break Panel Data AnalysisSynthetic Control MethodSynthetic Control Method in Education Research