What changed after the policy?
Difference-in-differencesΔYᵀ − ΔYᶜ
Read the policy effect
- Compare groups
- Check trends
- Estimate change
THE CAUSAL INFERENCE WORKSPACE
Good questions.
Credible answers.
Find a method for your question. Follow the analysis, inspect its evidence, and discuss every step.
THE METHOD STUDIO
01 / 03
What happens at the cutoff?
Regression discontinuityμ₊(c) − μ₋(c)
Compare the two limits
- Find the cutoff
- Compare nearby
- Estimate the jump
Who benefits most?
Causal forestτ(x) = E[Y₁ − Y₀ | X=x]
Inspect effect variation
- Describe features
- Learn effects
- Check heterogeneity
A world of methods.
COMMUNITY ATLAS- Method guides
- 68
- Research fields
- 10
THE OPEN NOTEBOOK
Explore the methods.
68 workflows/10 fields of inquiry
Bayesian regression discontinuity with credible intervals (CausalPy)
The idea
Fit a model on each side of the cutoff, put a posterior on the jump, and report a credible interval for the discontinuity — plus an honest look at how it moves with the bandwidth.
FIGURES
Regression discontinuity, done right (rdrobust)
The idea
Estimate causal effects at a cutoff with data-driven optimal bandwidths and bias-corrected, robust confidence intervals.
Sharp regression discontinuity with robust bias correction (rdrobust)
The idea
Identify the effect at a cutoff: a local-polynomial RD with an MSE-optimal bandwidth and robust, bias-corrected confidence intervals.