Introduction | Estimating the returns to schooling | The data | OLS findings and the OVB problem | Original IV estimates | The IV estimate may suffer from omitted variable bias | Sensitivity analysis | Minimal sensitivity reporting | Sensitivity contour plots | References

Introduction | Background | Simulating the data | Fitting the model | Informal benchmarks | Formal bounds | References

Introduction | Violence in Darfur | The data and research question | The threat of unobserved confounders | Sensitivity Analysis | Minimal sensitivity reporting | Sensitivity contour plots of point estimates and t-values | Sensitivity plots of extreme scenarios | A disciplined discussion about confounding | Going further | References